Haifeng Gao - Notre Dame

Research/News Team Publications Outreach Equipment Links

Gao Research Group

2016 Group Picture
2015 summer
2015 Christmas
2016 Christmas
2017 Christmas
2017 March defense celebration
2017 Christmas
2014 Group Ski
2016 Lei Farewell
2014 Doyun Farewell
2012 group picture

Next Previous

Research Goals

News

December-2020: Welcome Andrew Trowbridge join the research group
March-2020: Research paper by Tim Cuneo is published in Polym. Chem., Congratulations.

Open Positions:

Graduate Students
The Gao group has multiple opening positions for graudate students. Students in the Gao group will have opportunity to acquire skills that encompass the areas of advanced organic/ polymer synthesis, characterization. Group members are encouraged to foster new ideas that are tailored to satisfy their current and future interests. Applicants should apply directly through the Department portal and contact Dr. Gao via email.
Postdoc Researcher
The Gao group currently has one opening position for postdoc researcher on polymer synthesis and materials. Interested candidates are welcome to contact Dr. Gao via email.

Polymers have been at the forefront of soft nanomaterials research due to their advantages including inexpensive feedstocks, versatile chemical compositions and nanometer-sized scale. In addition to well-established commodity applications, synthetic and biological macromolecules have been recently explored in specialty areas as diverse as nanoelectronics, data storage devices, new energy, healthcare, and biotechnology. These emerging markets generated new directions in fundamental and applied polymer research to design macromolecules with controlled chemical compositions, molecular weights and distributions, site-specific functionalities and architectures, which represent a robust multidisciplinary area, i.e., macromolecular engineering.

Our research embraces all the aspects of a successful materials design, from building structure-tailored polymers to analyzing their supermolecular organization and finally to testing their macroscopic properties. The main thrust is to design functional polymers and understand their structure-property relationships. These soft nanomaterials will meet critical challenges in broad fields of nanotechnology and biomedical sciences, including nanodevice construction, gas separation, catalysis, drug delivery and molecular electronics. The multidisciplinary nature in this research program allows students to acquire diverse synthetic and analytical skills and develop broad scientific vision in organic chemistry, polymer chemistry and materials science.

Our Team

Dr. Haifeng Gao

Associate Professor

[Click for full CV]
305C McCourtney Hall
Department of Chemistry and Biochemistry
University of Notre Dame
Notre Dame, IN 46556
Tel: 574-631-8023, Fax: 574-631-6652
Email: hgao(at)nd.edu

Google Scholar

Education

Postdoctoral Fellow, University of California Berkeley 01/2009 - 05/2011

Ph.D. (Chemistry) Carnegie Mellon University 12/2008

B.S. (Polymer Chemistry) Fudan University, Shanghai, China 06/2000

Appointment & Professional Experience

Associate Professor, Dept. of Chemistry & Biochemistry, University of Notre Dame 07/2017 - Present

Assistant Professor, Dept. of Chemistry & Biochemistry, University of Notre Dame 07/2011 - 06/2017

Postdoctoral Associate, UC Berkeley and Lawrence Berkeley National Laboratory 01/2009 - 05/2011

Research Assistant, Carnegie Mellon University 2004 - 2008

Awards and Honors

NSF CAREER award 2016

Thieme Chemistry Journal Awardees 2015

Army Young Investigator Program (YIP) award 2014

Senior Visiting Scholar of Key Laboratory in Fudan University, China 2013

UMass MRSEC Young Investigator Award 2013

AkzoNobel Award for Outstanding Graduate Research in Polymer Chemistry, ACS 2010

Guy C. Berry Graduate Research Award at Carnegie Mellon University 2008

Student Research Award at ACS Polymer Group (Pittsburgh Section) 2008

Chinese Government Award for Outstanding Self-Financed Students Abroad 2007

McWilliams Fellowship at Carnegie Mellon University 2007

Courses at Notre Dame

(CHEM10172) for Non-Majors: Organic Chemistry I: Organic Structure and Mechanism
(CHEM10182) for Majors: Organic Chemistry I: Organic Structure and Mechanism
(CHEM20283) for Majors: Organic Chemistry II: Organic Reactions and Applications
(CHEM40438/60438) Polymer Chemistry: from Principle to Practice
(CHEM90638) Special Topics of Organic Chemistry: Polymer Chemistry

Kangling Ma

325 McCourtney Hall
Tel: 574-631-0967
kma(at)nd.edu

Xiuyu Jin

325 McCourtney Hall
Tel: 574-631-0967
xjin3(at)nd.edu

Chengkai Fan

325 McCourtney Hall
Tel: 574-631-0967
cfan2(at)nd.edu

Andrew Trowbridge

325 McCourtney Hall
Tel: 574-631-0967
atrowbri(at)nd.edu

Alex Hymes

325 McCourtney Hall
Tel: 574-631-0967
ahymes(at)nd.edu

Publications

Current year - 2020

104. Xiuyu Jin, Kangling Ma, Jishnudas Chakkamalayath, Janeala Morsby, Haifeng Gao, In Situ Photocatalyzed Polymerization to Stabilize Perovskite Nanocrystals in Protic Solvents, ACS Energy Letters 2022, 7, 610–616

103. Kangling Ma, Xiuyu Jin, Weiping Gan, Chengkai Fan, Haifeng Gao, Chain-growth Click Copolymerization for Synthesis of Branched Copolymers with Tunable Branching Density, Polym. Chem. 2022, XX, accepted

102. Xiuyu Jin, Quanhui Ye, Chien-Wei Wang, Ying Wu, Kangling Ma, Sihan Yu, Na Wei, Haifeng Gao, Magnetic Nanoplatforms for Covalent Protein Immobilization Based on Spy Chemistry, ACS Appl. Mater. Interfaces 2021, 13, 44147-44156

101. Kangling Ma, Xiuyu Jin, Mingxin Zheng, Haifeng Gao, Dissolution and Functionalization of Celluloses Using 1,2,3-Triazolium Ionic Liquid, Carbohydrate Polymer Technologies and Applications 2021, 2, 100109

100. Benxin Jing, Xiaofeng Wang, Yi Shi, Yingxi Zhu, Haifeng Gao, Susan K. Fullerton-Shirey, Combining Hyperbranched and Linear Structures in Solid Polymer Electrolytes to Enhance Mechanical Properties and Ion Transport, Front. Chem. 2021, 9, 563864

99. Haifeng Gao, Synthesis of Linear Polymers in High Molecular Weights via Reaction-Enhanced Reactivity of Intermediates Using Friedel–Crafts Polycondensation, ACS Omega 2021, 6, 4527–4533

98. Timothy Cuneo, Haifeng Gao, Recent Advances on Synthesis and Biomaterials Applications of Hyperbranched Polymers, WIREs Nanomedicine and Nanobiotechnology 2020, 12, e1640

97. Sasha Padilla-Coley, Hui Xu, Janeala Morsby, Haifeng Gao, Bradley D. Smith, Supramolecular Loading of a Broad Spectrum of Molecular Guests In Hyperbranched Polytriazole Nanoparticles with Cores Containing Multiple Functional Groups, Biomacromolecules 2020, 21, 2165–2175

96. Timothy Cuneo, Xiaosong Cao, Lei Zou, Haifeng Gao, Synthesis of multisegmented block copolymer by Friedel–Crafts hydroxyalkylation polymerization, Polym. Chem. 2020, 11, 2542-2549.

95. Timothy Cuneo, Xiaofeng Wang, Yi Shi, Haifeng Gao, Synthesis of Hyperbranched Polymers via Metal-Free ATRP in Solution and Microemulsion, Macromol. Chem. Phys. 2020, 221, 2000008.

94. Weiping Gan, Hui Xu, Xiuyu Jin, Xiaosong Cao, Haifeng Gao, Recyclable Palladium-loaded Hyperbranched Polytriazoles as Efficient Polymer Catalysts for Heck Reaction, ACS Appl. Polym. Mater. 2020, 2, 677-684.

93. Min Zeng, Xiaosong Cao, Hui Xu, Weiping Gan, Bradley D. Smith, Haifeng Gao, Jinying Yuan, Synthesis and direct assembly of linear-dendritic copolymer via CuAAC click polymerization-induced self-assembly (CPISA), Polym. Chem. 2020, 11, 936-943.

92. Weiping Gan, Xiaosong Cao, Yi Shi, Haifeng Gao, Chain‐growth polymerization of azide–alkyne difunctional monomer: Synthesis of star polymer with linear polytriazole arms from a core, J. Polym. Sci. 2020, 58, 84-90.

2019 - 2012

91. Haifeng Gao, A personal journey on using polymerization in aqueous dispersed media to synthesize polymers with branched structures, Chin. Chem. Lett. 2019, 30, 1996-2002

90. Hannah. Naguib, Xiaosong Cao, Haifeng Gao, Synthesize Hyperbranched Polymers Carrying Two Reactive Handles via CuAAC Reaction and Thiol–Ene Chemistry, Macromol. Chem. Phys. 2019, 220, 1900221

89. Timothy Cuneo, Robert W. Graff, Xiaofeng Wang and Haifeng Gao, Synthesis of Highly Branched Copolymers in Microemulsion, Macromol. Chem. Phys. 2019, 220, 1800546

88. Xiaosong Cao, Weiping Gan, Yi Shi, Hui Xu and Haifeng Gao, Tunable Fluorescence from A Responsive Hyperbranched Polymer with Spatially Arranged Fluorophore Array, Chem. Asian J. 2018, 13, 3723-3728

87. Weiping Gan, Xiaosong Cao, Yi Shi, Lei Zou and Haifeng Gao, Ligand Effect in the Synthesis of Hyperbranched Polymers via Copper-Catalyzed Azide-Alkyne Cycloaddition Polymerization (CuAACP), J. Polym. Sci., Part A: Polym. Chem. 2018, 56, 2238-2244

86. Sipei Li, Maiko Omi, Francis Cartieri, Dominik Konkolewicz, Gordon Mao, Haifeng Gao, Saadyah E. Averick, Yuji Mishina, and Krzysztof Matyjaszewski, Cationic Hyperbranched Polymers with Biocompatible Shells for siRNA Delivery, Biomacromolecules 2018, 19, 3754–3765

85. Lei Zou, Xiaosong Cao, Qinnan Zhang, Marcus Dodds, Ruilan Guo, and Haifeng Gao, Friedel–Crafts A2 + B4 Polycondensation toward Regioselective Linear Polymer with Rigid Triphenylmethane Backbone and Its Property as Gas Separation Membrane, Macromolecules 2018, 51, 6580-6586

84. Daqiao Hu, Yi Shi, Yuanxin Du, Wei Yu, Jinding Huang, Haifeng Gao, Manzhou Zhu, Template synthesis of gold nanoparticles from hyperstar polymers and exploration of their catalytic function for hydrogen evolution reaction, Polymer 2018, 153, 331-337

83. Xiaosong Cao, Yi Shi, Weiping Gan, and Haifeng Gao, Tandem Functionalization in One Highly Branched Polymer with Layered Structure, Chem. Eur. J. 2018, 24, 5974-5981

82. Yi Shi, Xiaosong Cao, Daqiao Hu, and Haifeng Gao, The Use of Highly Branched Polymers with Layered Structures for Mimicking Light-Harvesting Process, Angew. Chem., Int. Ed. 2018, 57, 516–520.

81. Liang Zhao; Xiang Wu; Xiaofeng Wang; Chunying Duan; Hongyan Wang; Amol Punjabi; Yang Zhao; Yuanwei Zhang; Zuoshang Xu; Haifeng Gao; Gang Han, Development of Excipient-Free Freeze-Dryable Unimolecular Hyperstar Polymers for Efficient siRNA Silencing, ACS Macro Lett. 2017, 6, 700–704.

80. Xiaofeng Wang, Haifeng Gao, Recent Progress on Hyperbranched Polymers Synthesized via Radical-Based Self-Condensing Vinyl Polymerization, Polymers 2017, 9, 188.

79. Daqiao Hu, Shan Jin, Yi Shi, Xiaofeng Wang, Robert W. Graff, Wenqi Liu, Manzhou Zhu and Haifeng Gao, Preparation of hyperstar polymers with encapsulated Au25(SR)18 clusters as recyclable catalysts for nitrophenol reduction, Nanoscale 2017, 9, 3629-3636.

78. Benxin Jing, Xiaofeng Wang, Haitao Wang, Jie Qiu, Yi Shi, Haifeng Gao, Yingxi Zhu, Shape and Mechanical Control of Poly(ethylene oxide) Based Polymersome with Polyoxometalates via Hydrogen Bond, J. Phys. Chem. B 2017, 121, 1723–1730.

77. Siyi Qu, Yi Shi, Sherwood Benavides, Aaron Hunter, Haifeng Gao, and William A. Phillip, Copolymer Nanofilters with Charge-Patterned Domains for Enhanced Electrolyte Transport, Chem. Mater. 2017, 29, 762-772.

76. Weiping Gan#, Yi Shi#, Benxin Jing, Xiaosong Cao, Yingxi Zhu, and Haifeng Gao, Produce Molecular Brushes with Ultrahigh Grafting Density Using Accelerated CuAAC Grafting-Onto Strategy, Macromolecules 2017, 50, 215–222. #: equal contribution.

75. Xiaosong Cao, Yi Shi, and Haifeng Gao, A Novel Chain-growth CuAAC Polymerization: One-pot Synthesis of Dendritic Hyperbranched Polymers with Well-defined Structures, SYNLETT 2017, 28, 391-396. (Invited SYNPACTS article)

74. Yi Shi, Xiaosong Cao, Lei Zou, Weiping Gan and Haifeng Gao, Preparation of Water-soluble Hyperbranched Polymers with Tunable Thermosensitivity using Chain-growth CuAAC Copolymerization, Polym. Chem. 2016, 7, 7500-7505.

73. Xiaofeng Wang, Yi Shi, Robert W. Graff, Xiaosong Cao, and Haifeng Gao, Synthesis of Hyperbranched Polymers with High Molecular Weight in the Homopolymerization of Polymerizable Trithiocarbonate Transfer Agent without Thermal Initiator, Macromolecules 2016, 49, 6471-6479.

72. Lei Zou; Yi Shi; Xiaosong Cao; Weiping Gan; Xiaofeng Wang; Robert Graff; Daqiao Hu; Haifeng Gao, Synthesis of Acid-Degradable Hyperbranched Polymers by Chain-Growth CuAAC Polymerization of an AB3 Monomer, Polym. Chem. 2016, 7, 5512 - 5517.

71. Xiaosong Cao, Yi Shi, Weiping Gan, Hannah Naguib, Xiaofeng Wang, Robert W. Graff, and Haifeng Gao, Effect of Monomer Structure on the CuAAC Polymerization To Produce Hyperbranched Polymers, Macromolecules 2016, 49, 5342-5349.

70. Yi Shi; Xiaosong Cao; Shuangjiang Luo; Xiaofeng Wang; Robert W. Graff; Daqiao Hu; Ruilan Guo; Haifeng Gao, Investigate the Glass Transition Temperature of Hyperbranched Copolymers with Segmented Monomer Sequence, Macromolecules 2016, 49, 4416-4422.

69. Chen Qu#; Yi Shi#; Benxin Jing; Haifeng Gao; Yingxi Zhu, Probing the Inhomogeneous Charge Distribution on Annealed Polyelectrolyte Star Polymers in Dilute Aqueous Solutions, ACS Macro Letters 2016, 5, 402-406. #: equal contribution.

68. Yi Shi, Xiaosong Cao, Haifeng Gao, The Use of Azide-Alkyne Click Chemistry in Recent Syntheses and Applications of Polytriazole-based Nanostructured Polymers, Nanoscales, 2016, 8, 4864-4881.

67. Xiaosong Cao#; Yi Shi#; Xiaofeng Wang; Robert W. Graff; Haifeng Gao, Design A Highly Reactive Trifunctional Core Molecule to Obtain Hyperbranched Polymers with Over A Million Molecular Weight in One-pot Click Polymerization, Macromolecules 2016, 49, 760-766. #: equal contribution.

66. S. Misra; X. Wang; I. Srivastava; M. Imgruet; R.W. Graff; A. Ohoka; T. Kampert; H. Gao; D. Pan, Combinatorial Therapy for Triple Negative Breast Cancer using HyperStar Polymer-based Nanoparticles, Chem. Commun. 2015, 51, 16170-16173.

65. Robert W. Graff; Yi Shi; Xiaofeng Wang; Haifeng Gao, Comparison of Loading Efficiency between Hyperbranched Polymers and Crosslinked Nanogels at Various Branching Densities, Macromol. Rapid Commun. 2015, 36, 2076-2082.

64. Xiaofeng Wang; Robert W. Graff; Yi Shi; Haifeng Gao, One-pot synthesis of hyperstar polymers via sequential ATRP of inimers and functional monomers in aqueous dispersed media, Polym. Chem. 2015, 6, 6739-6745.

63. Yi Shi; Robert W. Graff; Xiaosong Cao; Xiaofeng Wang, Haifeng Gao, Chain-Growth Click Polymerization of AB2 Monomers to Produce Hyperbranched Polymer with Low Polydispersity in One-Pot, Angew. Chem., Int. Ed. 2015, 7631–7635.

62. Guolin Lu; Hao Liu; Haifeng Gao; Chun Feng; Yongjun Li; Xiaoyu Huang, Construction of semi-fluorinated amphiphilic graft copolymer bearing a poly(2-methyl-1,4-bistrifluorovinyloxybenzene) backbone and poly(ethylene glycol) side chains via the grafting-onto strategy, RSC Advances 2015, 5, 39668-39676.

61. Qiao An; Zifeng Li; Robert Graff; Jia Guo; Haifeng Gao; Changchun Wang, Core-Double-Shell Fe3O4@Carbon@Poly(InIII-carboxylate) Microspheres: Cycloaddition of CO2 and Epoxides on Coordination Polymer Shells Constituted by Imidazolium-Derived AlIII–Salen Bifunctional Catalysts, ACS Appl. Mater. Interfaces 2015, 7, 4969-4978.

60.Robert W. Graff; Xiaofeng Wang; Haifeng Gao, Exploring Self-Condensing Vinyl Polymerization of Inimers in Microemulsion To Regulate the Structures of Hyperbranched Polymers, Macromolecules 2015, 48, 2118-2126.

59.Zhi Guo, Doyun Lee, Haifeng Gao, Libai Huang, Exciton Structure and Dynamics in Solution Aggregates of a Low-bandgap Copolymer, J. Phys. Chem. B 2015, 119, 7666–7672.

58. Xiaofeng Wang; Yi Shi; Robert W. Graff; Doyun Lee; Haifeng Gao, Developing Recyclable pH-Responsive Magnetic Nanoparticles for Oil-Water Separation, Polymer 2015 72, 361-367.

57. Doyun Lee, Chengyi Zhang, Haifeng Gao, Amine-Functionalized Mesoporous Polymer Network for Highly Selective Absorption of CO2 over N2, Macromol. Chem. Phys. 2015, 216, 489-494.

56. Yi Shi; Xiaofeng Wang; Robert W. Graff; William A. Phillip; Haifeng Gao, Synthesis of degradable molecular brushes via a combination of ring-opening polymerization and click chemistry, J. Polym. Sci., Part A: Polym. Chem. 2015, 53, 239.

55. Sahadevan Rajesh; Yu Yan; Hsueh-Chia Chang; Haifeng Gao; William A. Phillip, Mixed Mosaic Membranes Prepared by Layer-by-Layer Assembly for Ionic Separations, ACS Nano 2014, 8, 12338-12345.

54. Zhi Guo, Doyun Lee, Joseph Strzalka, Haifeng Gao, Libai Huang, Ali M. Khounsary and Tengfei Luo, Thermal Conductivity of Organic Bulk Heterojunction Solar Cells: An Unusual Binary Mixing Effect, Phys. Chem. Chem. Phys, 2014, 16, 26359.

53. Dian Li; Yuting Zhang; Sha Jin; Jia Guo; Haifeng Gao; Changchun Wang, Development of a redox/pH dual stimuli-responsive MSP@P(MAA-Cy) drug delivery system for programmed release of anticancer drugs in tumour cells, J. Mater. Chem. B 2014, 2, 5187.

52. Zhi Guo; Doyun Lee; Richard D. Schaller; Xiaobing Zuo; Byeongdu Lee; TengFei Luo; Haifeng Gao; Libai Huang, Relationship between Interchain Interaction, Exciton Delocalization, and Charge Separation in Low-Bandgap Copolymer Blends, J. Am. Chem. Soc. , 2014, 136, 10024.

51. Zhi Guo, Doyun Lee, Yi Liu, Fangyuan Sun, Haifeng Gao, Burns Peter, Libai Huang, and Tengfei Luo, Tuning the Thermal Conductivity of Solar Cell Polymers through Side Chain Engineering, Phys. Chem. Chem. Phys, 2014, 16, 7764.

50. Doyun Lee, Chengyi Zhang and Haifeng Gao, Facile Production of Polypyrrole Nanofibers Using Freeze-Drying Method, Macromol. Chem. Phys., 2014, 215, 669.

49. Chengyi Zhang, Xiaofeng Wang, Ke Min, Doyun Lee, Chuan Wei, Hannah Schulhauser and Haifeng Gao, Developing Porous Honeycomb Films Using Miktoarm Star Copolymers and Exploring Their Application in Particle Separation, Macromol. Rapid Commun., 2014, 35, 221.

48. Doyun Lee, Chengyi Zhang, Chuan Wei, Brandon L. Ashfeld and Haifeng Gao, Fast and Efficient CO2 Capture using High Nitrogen-Contents Polypyrrole Nanoparticles, J. Mater. Chem. A, 2013, 1, 14862.

47. Monika Makrocka-Rydzyk; Aleksandra Wypych; Maria Dobies; Mariusz Jancelewicz; Stefan Jurga; Hong Yul Cho; Haifeng Gao; Krzysztof Matyjaszewski, Molecular dynamics in PBA/PEO miktoarm star copolymers, Polymer, 2013, 54, 3341.

46. Ke Min, Haifeng Gao, New Method to Access Hyperbranched Polymers with Uniform Structure via One-Pot Polymerization of Inimer in Microemulsion, J. Am. Chem. Soc., 2012, 134, 15680-15683.

45. Haifeng Gao, Development of Star Polymers as Unimolecular Containers for Nanomaterials, Macromol. Rapid Commun., 2012, 33, 722-734.

Publications Before 2011

2011 - 2009

44. Monika Makrocka-Rydzyk; Aleksandra Wypych; Kamil Szpotkowski; Maciej Kozak; Stefan Jurga; Haifeng Gao; Hong Yul Cho; Krzysztof Matyjaszewski, Structural Studies of Poly(butyl acrylate)-Poly(ethylene oxide) Miktoarm Star Polymers, Polymer, 2011, 52, 5513.

43. Alper Nese; Natalia V. Lebedeva; Gizelle Sherwood; Saadyah Averick; Yuanchao Li; Haifeng Gao; Linda Peteanu; Sergei S. Sheiko; Krzysztof Matyjaszewski, pH-Responsive Fluorescent Molecular Bottlebrushes Prepared by Atom Transfer Radical Polymerization, Macromolecules, 2011, 44, 5905.

42. Evelyne van Ruymbeke; Ed B. Muliawan; Dimitris Vlassopoulos; Haifeng Gao; Krzysztof Matyjaszewski, Melt rheology of star polymers with large number of small arms, prepared by crosslinking poly(n-butyl acrylate) macromonomers via ATRP, Eur. Polym. J., 2011, 47, 746.

41. Haifeng Gao; Daniel A. Poulsen; Biwu Ma; David A. Unruh; Xiaoyong Zhao; Jill E. Millstone; Jean M. J. Frechet, Site Isolation of Emitters within Crosslinked Polymer Nanoparticles for White Electroluminescence, Nano Lett., 2010, 10, 1440

40. Valentin Rodionov*; Haifeng Gao*; Steven Scroggins; David A. Unruh; Alyssa-Jennifer Avestro; Jean M. J. Frechet, Easy Access to A Family of Polymer Catalysts from Modular Star Polymers, J. Am. Chem. Soc., 2010, 132, 2570 (* equal contribution)

39. Hong Y. Cho; Haifeng Gao; Abiraman Srinivasan; Joanna Hong; Sidi A. Bencherif; Daniel J. Siegwart; Hyun-jong Paik; Jeffrey O. Hollinger; Krzysztof Matyjaszewski, Rapid Cellular Internalization of Multifunctional Star Polymers Prepared by Atom Transfer Radical Polymerization, Biomacromolecules, 2010, 11, 2199.

38. Wim Van Camp; Haifeng Gao; Filip E. Du Prez; Krzysztof Matyjaszewski, Effect of Crosslinker Multiplicity on the Gel Point in ATRP, J. Polym. Sci., Part A: Polym. Chem., 2010, 48, 2016-2023.

37. Haifeng Gao; Krzysztof Matyjaszewski, Modular Approaches to Star and Miktoarm Star Polymers by ATRP of Cross-Linkers, Macromol. Symp., 2010, 291-292, 12-16.

36. Haifeng Gao; Ke Min; Krzysztof Matyjaszewski, Gelation in ATRP Using Structurally Different Branching Reagents: Comparison of Inimer, Divinyl and Trivinyl Cross-linkers, Macromolecules 2009, 42, 8039.

35. Haifeng Gao; Piotr Polanowski; Krzysztof Matyjaszewski, Gelation in Living Copolymerization of Monomer and Divinyl Cross-Linker: Comparison of ATRP Experiments with Monte Carlo Simulations, Macromolecules 2009, 42, 5925.

34. Sidi A. Bencherif; Haifeng Gao; Abiraman Srinivasan; Daniel J. Siegwart; Jeffrey O. Hollinger; Newell R. Washburn; Krzysztof Matyjaszewski, Cell-Adhesive Star Polymers Prepared by ATRP, Biomacromolecules 2009, 10, 1795.

33. Haifeng Gao; Krzysztof Matyjaszewski, High-Yield Synthesis of Uniform Star Polymers-Is Controlled Radical Polymerization Always Needed? Chem. Eur. J., 2009, 15, 6107.

32. Haifeng Gao; Krzysztof Matyjaszewski, Synthesis of Functional Polymers with Controlled Architecture by CRP of Monomers in the Presence of Cross-linkers: From Stars to Gels, Prog. Polym. Sci. 2009, 34, 317.

31. Shigeki Ohno; Haifeng Gao; Brian Cusick; Tomasz Kowalewski; Krzysztof Matyjaszewski, Methacryloyl and/or Hydroxyl End-Functional Star Polymers Synthesized by ATRP using the Arm-First Method, Macromol. Chem. Phys. 2009, 210, 421.

30. Ke Min; Haifeng Gao; Jeong Ae Yoon; Wei Wu; Tomasz Kowalewski; Krzysztof Matyjaszewski, One-Pot Synthesis of Hairy Nanoparticles by Emulsion ATRP, Macromolecules 2009, 42, 1597.

29. Wenwen Li; Haifeng Gao; Krzysztof Matyjaszewski, Influence of Initiation Efficiency and Polydispersity of Primary Chains on Gelation during Atom Transfer Radical Copolymerization of Monomer and Cross-Linker, Macromolecules 2009, 42, 927.

28. Byeong-Su Kim; Haifeng Gao; Avni A. Argun; Krzysztof Matyjaszewski; Paula T. Hammond, All-Star Polymer Multilayers as pH-Responsive Nanofilms, Macromolecules 2009, 42, 368.

2008 - 2006

27. Daniel J. Siegwart; Jung Kwon Oh; Haifeng Gao; Sidi A. Bencherif; Fabien Perineau; Andrew K. Bohaty; Jeffrey O. Hollinger; Krzysztof Matyjaszewski, Biotin-, Pyrene-, and GRGDS-Functionalized Polymers and Nanogels via ATRP and End Group Modification, Macromol. Chem. Phys. 2008, 209, 2180.

26. Haifeng Gao; Anna Miasnikova; Krzysztof Matyjaszewski, Effect of Cross-linker Reactivity on Experimental Gel Points during ATRcP of Monomer and Cross-linker, Macromolecules 2008, 41, 7843.

25. Hongchen Dong; Manzhou Zhu; Jeong Ae Yoon; Haifeng Gao; Rongchao Jin; Krzysztof Matyjaszewski, One-Pot Synthesis of Robust Core/Shell Gold Nanoparticles, J. Am. Chem. Soc. 2008, 130, 12852.

24. Haifeng Gao; Krzysztof Matyjaszewski, Synthesis of Low Polydispersity Miktoarm Star Copolymers via A Simple "Arm-First" Method: Macromonomers as Arm Precursors, Macromolecules 2008, 41, 4250.

23. Haifeng Gao; Wenwen Li; Krzysztof Matyjaszewski, Synthesis of Polyacrylate Networks by ATRP: Parameters Influencing Experimental Gel Points, Macromolecules 2008, 41, 2335.

22. Haifeng Gao; Krzysztof Matyjaszewski, Synthesis of Star Polymers by A New "Core-First" Method: Sequential Polymerization of Cross-linker and Monomer, Macromolecules 2008, 41, 1118.

21. Haifeng Gao; Ke Min; Krzysztof Matyjaszewski, Determination of Gel Point during Atom Transfer Radical Copolymerization with Cross-linker, Macromolecules 2007, 40, 7763.

20. Haifeng Gao; Krzysztof Matyjaszewski, "Arm-First" Method As A Simple and General Method for Synthesis of Miktoarm Star Copolymers, J. Am. Chem. Soc. 2007, 129, 11828.

19. Haifeng Gao; Ke Min; Krzysztof Matyjaszewski, Synthesis of 3-Arm Star Block Copolymers by Combination of "Core-first" and "Coupling-onto" Methods Using ATRP and Click Reactions, Macromol. Chem. Phys. 2007, 208, 1370.

18. Haifeng Gao; Krzysztof Matyjaszewski, Synthesis of Molecular Brushes by "Grafting Onto" Method: Combination of ATRP and Click Reactions, J. Am. Chem. Soc. 2007, 129, 6633.

17. Ke Min; Haifeng Gao; Krzysztof Matyjaszewski, Use of Ascorbic Acid as Reducing Agent for Synthesis of Well-Defined Polymers by ARGET ATRP, Macromolecules 2007, 40, 1789.

16. Haifeng Gao; Krzysztof Matyjaszewski, Low Polydispersity Star Polymers with Core Functionality by Cross-linking Macromonomers Using Functional ATRP Initiators, Macromolecules 2007, 40, 399.

15. Haifeng Gao; Shigeki Ohno; Krzysztof Matyjaszewski, Low Polydispersity Star Polymers via Cross-Linking Macromonomers by ATRP, J. Am. Chem. Soc. 2006, 128, 15111.

14. Haifeng Gao; Krzysztof Matyjaszewski, Synthesis of Miktoarm Star Polymers via ATRP Using the "In-Out" Method: Determination of Initiation Efficiency of Star Macroinitiators, Macromolecules 2006, 39, 7216.

13. Haifeng Gao; Ke Min; Krzysztof Matyjaszewski, Characterization of Linear and 3-Arm Star Block Copolymers by Liquid Chromatography at Critical Conditions, Macromol. Chem. Phys. 2006, 207, 1709 (invited cover feature article).

12. Haifeng Gao; Krzysztof Matyjaszewski, Synthesis of Star Polymers by a Combination of ATRP and the "Click" Coupling Method, Macromolecules 2006, 39, 4960.

11. Haifeng Gao; Krzysztof Matyjaszewski, Structural Control in ATRP Synthesis of Star Polymers Using the Arm-First Method, Macromolecules 2006, 39, 3154.

10. Ke Min; Haifeng Gao; Krzysztof Matyjaszewski, Development of an ab Initio Emulsion Atom Transfer Radical Polymerization: From Microemulsion to Emulsion, J. Am. Chem. Soc. 2006, 128, 10521.

9. Jung Kwon Oh; Chuanbing Tang; Haifeng Gao; Nicolay V. Tsarevsky; Krzysztof Matyjaszewski, Inverse Miniemulsion ATRP: A New Method for Synthesis and Functionalization of Well-Defined Water-Soluble/Cross-Linked Polymeric Particles, J. Am. Chem. Soc. 2006, 128, 5578.

2005 - 2002

8. Haifeng Gao; Guillaume Louche; Brent S. Sumerlin; Nazeem Jahed; Patricia Golas; Krzysztof Matyjaszewski, Gradient Polymer Elution Chromatographic Analysis of , -Dihydroxypolystyrene Synthesized via ATRP and Click Chemistry, Macromolecules 2005, 38, 8979.

7. Haifeng Gao; Nicolay V. Tsarevsky; Krzysztof Matyjaszewski, Synthesis of Degradable Miktoarm Star Copolymers via Atom Transfer Radical Polymerization, Macromolecules 2005, 38, 5995.

6. Haifeng Gao; Daniel J. Siegwart; Nazeem Jahed; Traian Sarbu; Krzysztof Matyjaszewski, Characterization of , -Dihydroxypolystyrene by Gradient Polymer Elution Chromatography and Two-dimensional Liquid Chromatography, Designed Monomers and Polymers 2005, 8, 533.

5. Ke Min; Haifeng Gao; Krzysztof Matyjaszewski, Preparation of Homopolymers and Block Copolymers in Miniemulsion by ATRP Using Activators Generated by Electron Transfer (AGET), J. Am. Chem. Soc. 2005, 127, 3825.

4. Haifeng Gao; Wuli Yang; Ke Min; Liusheng Zha; Changchun Wang; Shoukuan Fu, Thermosensitive Poly(N-isopropylacrylamide) Nanocapsules with Controlled Permeability, Polymer 2005, 46, 1087.

3. Haifeng Gao; Changchun Wang; Wuli Yang; Shoukuan Fu, Preparation of A Water-Soluble Fluorescent Polymer, J. Macromol. Sci., Pure Appl. Chem. 2004, A41, 357

2. Haifeng Gao; Yiqiang Zhao; Shoukuan Fu; Bin Li; Minqian Li, Preparation of A Novel Polymeric Fluorescent Nanoparticles, Colloid Polym. Sci. 2002, 280, 653.

1. Liusheng Zha; Haifeng Gao; Wuli Yang; Xinguo Jiang; Shoukuan Fu, Polymer Nanoparticles for Drug Delivery, Polymer Bulletin-Chinese 2002, 59, 24

Book Chapters

7. W. Gan, X. Cao, H. Gao*, Recent Progress on Grafting-onto Synthesis of Molecular Brushes by Reversible Deactivation Radical Polymerization and CuAAC Coupling Reaction, in ACS Symp. Ser. 2018, Vol. 1285, 263-280.

6. Y. Shi, R.W. Graff, H. Gao*, Recent Progress on Synthesis of Hyperbranched Polymers with Controlled Molecular Weight Distribution, in ACS Symp. Ser. 2014, Vol. 1188, 135-147.

5. H. Gao*, N. Chan, J.K. Oh, K. Matyjaszewski, Designing Hydrogel by ATRP, Editor: Xian Jun Loh, Date of publication: Jan 2015, Springer

4. C. Wei, H. Gao*, Star Polymers as Unimolecular Containers, in Encyclopedia of Polymeric Nanomaterials, edited by Shiro Kobayashi and Klaus Müllen, Springer-Verlag Berlin Heidelberg 2014.

3. H. Gao; W. Li; K. Min; K. Matyjaszewski, Gelation in Atom Transfer Radical Copolymerization with A Divinyl Cross-linker, in ACS Symp. Ser. 2009, Vol. 1023, 203

2. N.V. Tsarevsky; K. Min; N.M. Jahed; H. Gao; K. Matyjaszewski, Degradable Polymers and Materials - Principles and Practice, in ACS Symp. Ser. 2006, Vol. 939, 184

1. B.S. Sumerlin; N.V. Tsarevsky; H. Gao; P. Golas; G. Louche; R.Y. Lee; K. Matyjaszewski, Click Functionalization of Well-Defined Copolymers Prepared by Atom Transfer Radical Polymerization, in ACS Symp. Ser. 2006, Vol. 944, 140

Patents

1. H. Gao*, K. Min, Hyperbranched Polymers and Synthesizing Hyperbranched Polymers with Uniform Structure in Confined Space, U.S. Pat. Appl. Publ. 2015, US 20150368379.

2. Krzysztof Matyjaszewski; Halfeng Gao; James Spanswick, Preparation of Functional Star Macromolecules with Low Polydispersity, PCT Int. Appl. 2010, WO 2010111708.

Outreach