Jian Ping Gong

Faculty of Advanced Life Science, Hokkaido University
Professor
A03
A03-03
Research AreasSoft Matter, Polymer Gel

Fabrication of Soft Photonic Crystals for Novel Functions

Keywords
Polymer Structure & Property, Soft Crystal, Structural Color, Biomimicry, Stimulus Response
Co-Researcher
Co-Investigator: Takayuki Kurokawa (Faculty of Advanced Life Science, Hokkaido University, Professor)
Co-Investigator: Takayuki Nonoyama (Faculty of Advanced Life Science, Hokkaido University, Associate Professor)

Research Outline

Polymer hydrogels, containing large amount of water in the polymer network, possess many unique functionalities such as high permeability, stimuli-responsivity, biocompatibility, and low friction. Hydrogels are highly expected as functional materials for potential application. However, due to the amorphous structure of polymer network, the hydrogels have quite limited functions. In this research, our aim is to develop high functional hydrogels by introducing periodic structure and/or ordered structure, of several decades- to hundred-nanometer scale, to hydrogels based on the concept of soft crystals. Our strategy to develop such hydrogels is using shear force-aided molecular orientation method and bio-template method. We intend to develop soft & active tough photonic materials, which change structural color triggered by small stimuli (finger compression, temperature, pH, affinity with solvent). Moreover, we intend to apply the developed materials with photonic and anisotropic properties for next-generation optical sensors, novel color displays and zero-order long-term drug release systems based on anisotropic one dimensional diffusion.

Hydrogel with photonic structure. High density lipid bilayer and low density hydrated polymer network layer are stacked alternatively to form photonic structure. The inter-layer distance changes by small stimuli to cause color change.

Representative Achievements

  • Decoupling Dual-Stimuli Responses in Patterned Lamellar Hydrogels as Photonic Sensors,
    Y. Yue, X. Li, T. Kurokawa, M. A. Haque, J. P. Gong., J. Mater. Chem. B, 4, 4104–4109 (2016).
  • Polymer Adsorbed Bilayer Membranes Form Self-Healing Hydrogels with Tunable Superstructure, X. F. Li, T. Kurokawa, R. Takahashi, M. A. Haque, Y. F. Yue, T. Nakajima, J. P. Gong. Macromolecules, 48, 2277–2282 (2015).
  • Quasi-unidirectional shrinkage of gels with well-oriented lipid bilayers upon uniaxial stretching, T. Nakajima, C. Durand, X. F. Li, M. A. Haque, T. Kurokawa, J. P. Gong. Soft Matter, 11, 237–240 (2015).
  • Mechano-actuated ultrafast full-colour switching in layered photonic hydrogels, Y. F. Yue, T. Kurokawa, M. A. Haque, T. Nakajima, T. Nonoyama, X. F. Li, I. Kajiwara, J. P. Gong. Nature Commun., 5, 1–8 (2014).
  • Lamellar Hydrogels with High Toughness and Ternary Tunable Photonic Stop-Band, Y. F. Yue, M. A. Haque, T. Kurokawa, T. Nakajima, J. P. Gong, Adv. Mater., 25, 3106–3110 (2013).

Publications

Category

Academic papers/reviewed

  1. "Flower-like Photonic Hydrogel with Superstructure Induced via Gradient Shear Field" Y. N. Ye, M. A. Haque, A. Inoue, Y. Katsuyama, *T. Kurokawa and *J. P. Gong, ACS Macro Lett., 10(6), 708-713, (2021).
    DOI: 10.1021/acsmacrolett.1c00178
  2. "Facile Tuning of Hydrogel Properties by Manipulating Cationic-Aromatic Monomer Sequences" H. Fan, Y. Cai and *J. P. Gong, Sci. China Chem., 64(9), 1560-1568 (2021).
    DOI: 10.1007/s11426-021-1010-3
  3. "Fast In Vivo Fixation of Double Network Hydrogel to Bone by Monetite Surface Hybridization" *T. Nonoyama, L. Wang, R. Kiyama, N. Kashimura, K. Yasuda, S. Tanaka, T. Kurokawa and J. P. Gong, J. Ceram. Soc. Jpn., 129(9), 584-589 (2021).
    DOI: 10.2109/jcersj2.21084
  4. "Isotope Microscopic Observation of Osteogenesis Process Forming Robust Bonding of Double Network Hydrogel to Bone" *T. Nonoyama, L. Wang, M. Tsuda, Y. Suzuki, R. Kiyama, K. Yasuda, S. Tanaka, K. Nagata, R. Fujita, N. Sakamoto, N. Kawasaki, H. Yurimoto, * J. P. Gong, Adv. Healthcare Mater., 10(3), 2001731 (2021). (Web 2020).
    DOI: 10.1002/adhm.202001731
  5. "Molecular Mechanism of Abnormally Large Non-softening Deformation in a Tough Hydrogel" Y. N. Ye, K. Cui, W. Hong, X. Li, C. Yu, D. Hourdet, T. Nakajima, T. Kurokawa and * J. P. Gong, Proc. Natl Acad Sci. U.S.A., 118(14), e2014694118 (2021).
    DOI: 10.1073/pnas.2014694118
  6. "Structure and Unique Functions of Anisotropic Hydrogels Comprising Uniaxially Aligned Lamellar Bilayers" Y. Yue and J. P. Gong, Bull. Chem. Soc. Jpn. (BCSJ), 94(9), 2221-2234 (2021)(領域内共同研究 A01公募 楽)
    DOI: 10.1246/bcsj.20210209
  7. "Structure Frustration Enables Thermal History-Dependent Responsive Behavior in Self-Healing Hydrogels" C. Yu, *K. Cui, H. Guo, Y. N. Ye, X. Li and *J. P. Gong, Macromolecules, 54(21), 9927-9936 (2021).
    DOI: 10.1021/acs.macromol.1c01461
  8. "Tough Double Network Hydrogel and Its Biomedical Applications" T. Nonoyama and J. P. Gong, Annu. Rev. Chem. Biomol. Eng., 12(1), 393-410 (2021).
    DOI: 10.1146/annurev-chembioeng-101220-080338
  9. "Ultrahigh-Water-Content Photonic Hydrogels with Large Electro-optic Responses in Visible to Near-infrared Region" *Y. Yue, Y. Norikane and J. P. Gong, Adv. Opt. Mater., 9(9), 20022198 (2021).(領域内共同研究 A01公募 楽)
    DOI: 10.1002/adom.202002198
  10. “How Double Dynamics Affects Large Deformation and Fracture of Soft Materials” K. Cui and *J. P. Gong, J. Rheol., accepted (2022).
  11. "Flower-like Photonic Hydrogel with Superstructure Induced via Gradient Shear Field" Y. N. Ye, M. A. Haque, A. Inoue, Y. Katsuyama, *T. Kurokawa and *J. P. Gong, ACS Macro Lett., 10(6), 708-713, (2021).
    DOI: 10.1021/acsmacrolett.1c00178
  12. "Facile Tuning of Hydrogel Properties by Manipulating Cationic-Aromatic Monomer Sequences" H. Fan, Y. Cai and *J. P. Gong, Sci. China Chem., 64(9), 1560-1568 (2021).
    DOI: 10.1007/s11426-021-1010-3
  13. "Fast In Vivo Fixation of Double Network Hydrogel to Bone by Monetite Surface Hybridization" *T. Nonoyama, L. Wang, R. Kiyama, N. Kashimura, K. Yasuda, S. Tanaka, T. Kurokawa and J. P. Gong, J. Ceram. Soc. Jpn., 129(9), 584-589 (2021).
    DOI: 10.2109/jcersj2.21084
  14. "Isotope Microscopic Observation of Osteogenesis Process Forming Robust Bonding of Double Network Hydrogel to Bone" *T. Nonoyama, L. Wang, M. Tsuda, Y. Suzuki, R. Kiyama, K. Yasuda, S. Tanaka, K. Nagata, R. Fujita, N. Sakamoto, N. Kawasaki, H. Yurimoto, * J. P. Gong, Adv. Healthcare Mater., 10(3), 2001731 (2021). (Web 2020).
    DOI: 10.1002/adhm.202001731
  15. "Molecular Mechanism of Abnormally Large Non-softening Deformation in a Tough Hydrogel" Y. N. Ye, K. Cui, W. Hong, X. Li, C. Yu, D. Hourdet, T. Nakajima, T. Kurokawa and * J. P. Gong, Proc. Natl Acad Sci. U.S.A., 118(14), e2014694118 (2021).
    DOI: 10.1073/pnas.2014694118
  16. "Structure and Unique Functions of Anisotropic Hydrogels Comprising Uniaxially Aligned Lamellar Bilayers" Y. Yue and J. P. Gong, Bull. Chem. Soc. Jpn. (BCSJ), 94(9), 2221-2234 (2021)
    DOI: 10.1246/bcsj.20210209
  17. "Structure Frustration Enables Thermal History-Dependent Responsive Behavior in Self-Healing Hydrogels" C. Yu, *K. Cui, H. Guo, Y. N. Ye, X. Li and *J. P. Gong, Macromolecules, 54(21), 9927-9936 (2021).
    DOI: 10.1021/acs.macromol.1c01461
  18. "Tough Double Network Hydrogel and Its Biomedical Applications" T. Nonoyama and J. P. Gong, Annu. Rev. Chem. Biomol. Eng., 12(1), 393-410 (2021).
    DOI: 10.1146/annurev-chembioeng-101220-080338
  19. "Ultrahigh-Water-Content Photonic Hydrogels with Large Electro-optic Responses in Visible to Near-infrared Region" *Y. Yue, Y. Norikane and J. P. Gong, Adv. Opt. Mater., 9(9), 20022198 (2021).
    DOI: 10.1002/adom.202002198
  20. "Ultrapurified Alginate Gel Containing Bone Marrow Aspirate Concentrate Enhances Cartilage and Bone Regeneration on Osteochondral Defects in a Rabbit Model"　L. Xu, A. Urita, *T. Onodera, R. Hishimura, T. Nonoyama, M. Hamasaki, D. Liang, K. Houman, J. P. Gong, N. Iwasaki, Am. J. Sports Med., 49(8), 2199-2210 (2021).
    DOI: 10.1177/03635465211014186
  21. “How Double Dynamics Affects Large Deformation and Fracture of Soft Materials” K. Cui and *J. P. Gong, J. Rheol., accepted (2022).
  22. "Fabrication of Bioinspired Hydrogels: Challenges and Opportunities" H. Fan and J. P. Gong, Macromolecules, 2020, 53(8), 2769-2782.
    DOI: 10.1021/acs.macromol.0c00238
  23. "Fiber-reinforced Viscoelastomers Show Extraordinary Crack Resistance that Exceeds Metals" W. Cui, D. R. King, Y. Huang, L. Chen, T. L. Sun, Y. Guo, Y. Saruwatari, C.-Y. Hui, T. Kurokawa and J. P. Gong, Advanced Materials, 2020, 32(31), 1907180
    DOI: 10.1002/adma.201907180
  24. "Hydrogels as Dynamic Memory with Forgetting Ability" C. Yu, H. Guo, K. Cui, X. Li, Y. N. Ye, T. Kurokawa and J. P. Gong, Proceedings of the National Academy of Sciences, 2020, 117(32), 18962-18968
    DOI: 10.1073/pnas.2006842117
  25. "Hydrogels Toughened by Biominerals as Energy-Dissipative Sacrificial Bonds" K. Fukao, K. Tanaka, R. Kiyama, T. Nonoyama and J. P. Gong, Journal of Materials Chemistry B, 2020, 8(24), 5184-5188.
    DOI: 10.1039/D0TB00833H
  26. "Lamellar Bilayer to Fibril Structure Transformation of Tough Photonic Hydrogel under Elongation" M. A. Haque, K. Cui, M. Ilyas, T. Kurokawa, A. Marcellan, A. Brulet, R. Takahashi, T. Nakajima and J. P. Gong Macromolecules, 2020, 53, 4711-4721.
    DOI: 10.1021/acs.macromol.0c00878
  27. "Preparation of Tough Double- and Triple-Network Supermacroporous Hydrogels through Repeated Cryogelation" S. Sedlačík, T. Nonoyama, H. Guo, R. Kiyama, T. Nakajima, Y. Takeda, T. Kurokawa and J. P. Gong, Chemistry of Materials, 2020, 32(19), 8576-8586
    DOI: 10.1021/acs.chemmater.0c02911
  28. "Fabrication of Bioinspired Hydrogels: Challenges and Opportunities" H. Fan and J. P. Gong, Macromolecules, 2020, 53(8), 2769-2782.
    DOI: 10.1021/acs.macromol.0c00238
  29. "Fiber-reinforced Viscoelastomers Show Extraordinary Crack Resistance that Exceeds Metals" W. Cui, D. R. King, Y. Huang, L. Chen, T. L. Sun, Y. Guo, Y. Saruwatari, C.-Y. Hui, T. Kurokawa and J. P. Gong, Advanced Materials, 2020, 32(31), 1907180
    DOI: 10.1002/adma.201907180
  30. "Hydrogels as Dynamic Memory with Forgetting Ability" C. Yu, H. Guo, K. Cui, X. Li, Y. N. Ye, T. Kurokawa and J. P. Gong, Proceedings of the National Academy of Sciences, 2020, 117(32), 18962-18968
    DOI: 10.1073/pnas.2006842117
  31. "Hydrogels Toughened by Biominerals as Energy-Dissipative Sacrificial Bonds" K. Fukao, K. Tanaka, R. Kiyama, T. Nonoyama and J. P. Gong, Journal of Materials Chemistry B, 2020, 8, 5184-5188.
    DOI: 10.1039/D0TB00833H
  32. "Lamellar Bilayer to Fibril Structure Transformation of Tough Photonic Hydrogel under Elongation" M. A. Haque, K. Cui, M. Ilyas, T. Kurokawa, A. Marcellan, A. Brulet, R. Takahashi, T. Nakajima and J. P. Gong Macromolecules, 2020, 53, 4711-4721.
    DOI: 10.1021/acs.macromol.0c00878
  33. "Preparation of Tough Double- and Triple-Network Supermacroporous Hydrogels through Repeated Cryogelation" S. Sedlačík, T. Nonoyama, H. Guo, R. Kiyama, T. Nakajima, Y. Takeda, T. Kurokawa and J. P. Gong, Chemistry of Materials, 2020, 32(19), 8576-8586
    DOI: 10.1021/acs.chemmater.0c02911
  34. "Facile Synthesis of Novel Elastomers with Tunable Dynamics for Toughness, Self-healing and Adhesion" L. Chen, T. L. Sun, K. Cui, D. R. King, T. Kurokawa, Y. Saruwatari and J. P. Gong, Journal of Materials Chemistry A, 2019, 7(29),17334-17344.
    DOI: 10.1039/C9TA04840E
  35. "Hydrophobic Hydrogels with Fruit-like Structure and Functions" H. Guo, T. Nakajima, D. Hourdet, A. Marcellan, C. Creton, W. Hong, T. Kurokawa and J. P. Gong, Advanced Materials, 2019, 31(25), 1900702.
    DOI: 10.1002/adma.201900702
  36. "Instant Thermal Switching from Soft Hydrogel to Rigid Plastics Inspired by Thermophile Proteins" T. Nonoyama, Y. W. Lee, K. Ota, K. Fujioka, W. Hong and J. P. Gong, Advanced Materials, 2020, 32(4), 1905878.
    DOI: 10.1002/adma.201905878
  37. "Internal Damage Evolution in Double-Network Hydrogels Studied by Microelectrode Technique" H. Guo, W. Hong, T. Kurokawa, T. Matsuda, Z. L. Wu, T. Nakajima, M. Takahata, T. Sun, P. Rao and J. P. Gong, Macromolecules, 2019, 52, 18, 7114-7122.
    DOI: 10.1021/acs.macromol.9b01308
  38. "Non-Linear Rheological Study of Hydrogel Sliding Friction in Water and Concentrated Hyaluronan Solution" S. Hirayama, T. Kurokawa and J. P. Gong, Tribology International, 2020, 147, 106270.
    DOI: 10.1016/j.triboint.2020.106270
  39. "Polyelectrolyte Complexation via Viscoelastic Phase Separation Results in Tough and Self-Recovering Porous Hydrogel" K. Murakawa, D. R. King, T. L. Sun, H. Guo, T. Kurokawa and J. P. Gong, Journal of Materials Chemistry B, 2019, 7(35), 5296-5305.
    DOI: 10.1039/C9TB01376H
  40. "Superior Fracture Resistance of Fiber Reinforced Polyampholyte Hydrogels Achieved by Extraordinarily Large Energy-dissipative Process Zones" Y. Huang, D. R. King, W. Cui, T. L. Sun, H. Guo, T. Kurokawa, H. R. Brown, C.-Y. Hui and J. P. Gong, Journal of Materials Chemistry A, 2019, 7, 13431-13440.
    DOI: 10.1039/C9TA02326G
  41. "Facile Synthesis of Novel Elastomers with Tunable Dynamics for Toughness, Self-healing and Adhesion" L. Chen, T. L. Sun, K. Cui, D. R. King, T. Kurokawa, Y. Saruwatari and J. P. Gong, Journal of Materials Chemistry A, 2019, 7(29),17334-17344.
    DOI: 10.1039/C9TA04840E
  42. "Hydrophobic Hydrogels with Fruit-like Structure and Functions" H. Guo, T. Nakajima, D. Hourdet, A. Marcellan, C. Creton, W. Hong, T. Kurokawa and J. P. Gong, Advanced Materials, 2019, 31(25), 1900702.
    DOI: 10.1002/adma.201900702
  43. "Instant Thermal Switching from Soft Hydrogel to Rigid Plastics Inspired by Thermophile Proteins" T. Nonoyama, Y. W. Lee, K. Ota, K. Fujioka, W. Hong and J. P. Gong, Advanced Materials, 2020, 32(4), 1905878.
    DOI: 10.1002/adma.201905878
  44. "Internal Damage Evolution in Double-Network Hydrogels Studied by Microelectrode Technique" H. Guo, W. Hong, T. Kurokawa, T. Matsuda, Z. L. Wu, T. Nakajima, M. Takahata, T. Sun, P. Rao and J. P. Gong, Macromolecules, 2019, 52, 18, 7114-7122.
    DOI: 10.1021/acs.macromol.9b01308
  45. "Non-Linear Rheological Study of Hydrogel Sliding Friction in Water and Concentrated Hyaluronan Solution" S. Hirayama, T. Kurokawa and J. P. Gong, Tribology International, 2020, 147, 106270.
    DOI: 10.1016/j.triboint.2020.106270
  46. "Polyelectrolyte Complexation via Viscoelastic Phase Separation Results in Tough and Self-Recovering Porous Hydrogel" K. Murakawa, D. R. King, T. L. Sun, H. Guo, T. Kurokawa and J. P. Gong, Journal of Materials Chemistry B, 2019, 7(35), 5296-5305.
    DOI: 10.1039/C9TB01376H
  47. "Superior Fracture Resistance of Fiber Reinforced Polyampholyte Hydrogels Achieved by Extraordinarily Large Energy-dissipative Process Zones" Y. Huang, D. R. King, W. Cui, T. L. Sun, H. Guo, T. Kurokawa, H. R. Brown, C.-Y. Hui and J. P. Gong, Journal of Materials Chemistry A, 2019, 7, 13431-13440.
    DOI: 10.1039/C9TA02326G
  48. "Designing Responsive Photonic Crystal Patterns by Using Laser Engraving" Y. Yue, T. Kurokawa, ACS Applied Materials & Interfaces, 2019, 11(11), 10841-10847.
    DOI: 10.1021/acsami.8b22498
  49. "Shearing-induced contact pattern formation in hydrogels sliding in polymer solution" S. Yashma, S. Hirayama, T. Kurokawa, T. Salez, H. Takefuji, W. Hong, J. P. Gong, Soft Matter, 2019, 9, 1953-1959.
    DOI: 10.1039/C8SM02428F
  50. "Designing Responsive Photonic Crystal Patterns by Using Laser Engraving" Y. Yue, T. Kurokawa, ACS Applied Materials & Interfaces, 2019, 11(11), 10841-10847.
    DOI: 10.1021/acsami.8b22498
  51. "Shearing-induced contact pattern formation in hydrogels sliding in polymer solution" S. Yashma, S. Hirayama, T. Kurokawa, T. Salez, H. Takefuji, W. Hong, J. P. Gong, Soft Matter, 2019, 9, 1953-1959.
    DOI: 10.1039/C8SM02428F
  52. "Tough and Variable-Band-Gap Photonic Hydrogel Displaying Programmable Angle-Dependent Colors" M. Haque, K. Mito, T. Kurokawa, T. Nakajima, T. Nonoyama, M. Ilyas, J. Gong, ACS Omega, 2018, 3 (1), 55−62.
    DOI: 10.1021/acsomega.7b01443
  53. "Water-Triggered Ductile−Brittle Transition of Anisotropic Lamellar Hydrogels and Effect of Confinement on Polymer Dynamics" M. Ilyas, M. Haque, Y. Yue, T. Kurokawa, T. Nakajima, T. Nonoyama, J. Gong, Macromolecules, 2017, 50 (20), 8169−8177.
    DOI: 10.1021/acs.macromol.7b01438
  54. "Tough and Variable-Band-Gap Photonic Hydrogel Displaying Programmable Angle-Dependent Colors" M. Haque, K. Mito, T. Kurokawa, T. Nakajima, T. Nonoyama, M. Ilyas, J. Gong, ACS Omega, 2018, 3 (1), 55−62.
    DOI: 10.1021/acsomega.7b01443
  55. "Water-Triggered Ductile−Brittle Transition of Anisotropic Lamellar Hydrogels and Effect of Confinement on Polymer Dynamics" M. Ilyas, M. Haque, Y. Yue, T. Kurokawa, T. Nakajima, T. Nonoyama, J. Gong, Macromolecules, 2017, 50 (20), 8169−8177.
    DOI: 10.1021/acs.macromol.7b01438

Media, Outreach activity, Patent, others

  1. 「Bio-inspired hydrogel can rapidly switch to rigid plastic」、Chem Europe.com（2019.12.6）
  2. 「Bio-inspired hydrogel can rapidly switch to rigid plastic」、Phys.org（2019.12.4）
  3. 「Bio-inspired hydrogel can rapidly switch to rigid plastic」、Science Daily（2019.12.4）
  4. 「Bio-sinpired hydrogel can rapidly switch to rigid plastic」、EurekAlert! （2019.12.3）
  5. 「Chemistry in Pictures: Stretchy structural color」、c&en (2020.1.7)
  6. 「Heat-loving hydrogel hardens as temperature rises」、The Engineer (2019.12.6)
  7. 「Study Unveils Inexpensive Heat-responsive Hydrogel Ideal for Protective Clothing」、AZO Materials (2019.12.12)
  8. 「Thermophile-inspired gel gets 1,800 times harder when heated」、New Atlas（2019.12.5）
  9. 「Bio-inspired hydrogel can rapidly switch to rigid plastic」Chem Europe.com（2019.12.6）
  10. 「Bio-inspired hydrogel can rapidly switch to rigid plastic」Phys.org（2019.12.4）
  11. 「Bio-inspired hydrogel can rapidly switch to rigid plastic」Science Daily（2019.12.4）
  12. 「Bio-sinpired hydrogel can rapidly switch to rigid plastic」EurekAlert! （2019.12.3）
  13. 「Chemistry in Pictures: Stretchy structural color」c&en (2020.1.7)
  14. 「Heat-loving hydrogel hardens as temperature rises」The Engineer (2019.12.6)
  15. 「Study Unveils Inexpensive Heat-responsive Hydrogel Ideal for Protective Clothing」AZO Materials (2019.12.12)
  16. 「Thermophile-inspired gel gets 1,800 times harder when heated」New Atlas（2019.12.5）

International conferences

  1. " Fatigue fracture of self-healing polyampholyte hydrogels with hierarchical structure" J. P. Gong (Invited), ACS Spring 2021 National Meeting: Fundamentals of Polymer Mechanics Symposium (online, Apr. 7, 2021)
  2. "Bioinspired Soft Materials: Challenges and Opportunities " J. P. Gong (Invited), iCANX Talks (online, Mar. 25, 2022)
  3. "Double Network Hydrogels for Biological Applications" J. P. Gong (Invited), Biohydrogels 2021 (online, Apr. 23, 2021)
  4. "Dynamic Hydrogels" J. P. Gong (Invited), The 13th International Symposium on Polyelectrolytes (ISP2020) (online, Jun. 22, 2021)
  5. "Dynamic Hydrogels" T. Matusda, T. Nakajima, J. P. Gong (Invited), The 48th World Polymer Congress (IUPAC-MACRO2020+) (online, May 20, 2021)
  6. "Fatigue fracture of self-healing hydrogels with hierarchical structure" J. P. Gong (Invited), Pacifichem 2021: Macromolecular Symposium "Tough and Toughend Polymers" (online, Dec. 21, 2021)
  7. "Poly(cation-π) Hydrogels as Super Glues in Sea water" H. Fan, J. P. Gong (invited), The 13th International IUPAC Conference on Polymer-solvent Complexes and Intercalates (Polysolvat-13) (online, Nov. 11, 2021)
  8. "Rapid Thermal Switching from Hydrogel to Plastic" J. P. Gong (Invited), The 48th World Polymer Congress (IUPAC-MACRO2020+) (online, May 18, 2021)
  9. "Self-growing hydrogels learnt from muscle training" J. P. Gong (Invited), Pacifichem 2021: Materials Symposium "The Many Flavors of Mechanochemistry" (online, Dec. 20, 2021)
  10. "Self-growing of double network hydrogels by mechanical training" J. P. Gong (Invited), ACS Spring 2021 National Meeting: Macromolecular Chemistry at the Dawn of Its Second Century (online, Apr. 6, 2021)
  11. "Unique functions of anisotropic hydrogels intercalated by lamellar bilayer membranes" J. P. Gong (Invited), Duke Soft Matter Symposium on Polymer Networks (online, Oct. 5, 2021)
  12. "Yielding Criterion of Double Network Hydrogels" J. P. Gong (Invited), Polymer Physics & Polymer Spectroscopy Webinar (online, Dec. 16, 2021)
  13. “Hydrogels: Challenges and Opportunities,” J. P. Gong, ACS Macro Letters 10th Anniversary Webinar Series: Polymer Physics/Physical Chemistry (online, March 3, 2021)
  14. “Self-Growing and Strengthening of Double Network Hydrogels by Mechanical Training,” J. P. Gong (Invited), Extreme Mechanics Letter (EML) Webinar (online, Dec. 9, 2020)
  15. "Hydrogel Possessing Thermo Reversible Robustizing" T. Nonoyama, Y. W. Lee, K. Ota, K. Fujioka, J. P. Gong, 82nd Prague Meeting on Macromolecules - Polymer Networks and Gels 2018 and 24th Polymer Network Group Meeting (PNG2018) (Institute of Macromolecular Chemistry, Prague, Czech, Jun. 17-21, 2018)
  16. "Hydrogels with Multi-Cylindrical Lamellar Bilayers: Swelling-Induced Contraction and Anisotropic Molecular Diffusion" K. Mito, M. A. Haque, T. Kurokawa, J. P. Gong, The 2nd International Symposium for Advanced Gel Materials & Soft Matters (ISAGMSM) (Renaissance Guiyang Hotel, Guiyang, China, Aug. 20-22, 2017)
  17. "Self-Growing and Strengthening of Double Network Hydrogels by Mechanical Training" J. P. Gong (Invited), Extreme Mechanics Letter (EML) Webinar (online, Dec. 9, 2020)
  18. "Tough and Variable-Band-Gap Photonic Hydrogel Displaying Programmable Angle-Dependent Color" M. A. Haque, K. Mito, T. Kurokawa, T. Nakajima, J. P. Gong, Fourth Conference of Bangladesh Crystallographic Association (University of Dhaka, Dhaka, Bangladesh, Jan. 20, 2018)
  19. "Hydrogel Possessing Rubbery-to-Glassy Transition at Elevated Temperature" T. Nonoyama (Invited), Y. W. Lee, K. Ota, K. Fujioka, J. P. Gong, 中国化学会2019年全国高分子学術論文報告会, (Qujiang International Conference & Exhibition Center, Xi'an, China, Oct. 18-19, 2019
  20. "Quick & Reversible Thermo-Robustizing Hydrogels Exhibiting 1000 Times Modulus Jump" T. Nonoyama (Invited), International Symposium on Biopolymer Synthesis and Degradation (Hokkaido University, Sapporo, Japan, Jul. 29-30, 2019)
  21. "Robust Phase-Separation Induced Rubbery-to-Glassy Transition at Elevated Temperature" T. Nonoyama (Invited), Seminar at Shaanxi University of Science & Technology (Shaanxi University of Science & Technology, Xi'an, China, Oct. 20, 2019)
  22. “Activity Measurement of Polyelectrolyte in Hydrogels by Microelectrode Technique,” T. Kurokawa(Invited), International Congress on Pure & Applied Chemistry (ICPAC Yangon 2019) (Rose Garden Hotel, Yangon, Myanmar, Aug. 7, 2019)
  23. “Tough and Variable-Band-Gap Photonic Hydrogel Displaying Programmable Angle-Dependent Color”, Haque MA, Mito K, Kurokawa T, Nakajima T, Gong JP, Fourth Conference of Bangladesh Crystallographic Association, University of Dhaka, Dhaka, Bangladesh, January 20, 2018
  24. "Deformation of 1D photonic hydrogels with lipid bilayers" J. P. Gong (Invited), The 4th International Workshop on Soft Machines and Mechanics (Wyndham Grand Hotel, Xi’an City, Shaanxi Province, China, Jun. 15-16, 2018)
  25. "Hydrogel Possessing Thermo Reversible Robustizing" T. Nonoyama, Y. W. Lee, K. Ota, K. Fujioka, J. P. Gong, 82nd Prague Meeting on Macromolecules - Polymer Networks and Gels 2018 and 24th Polymer Network Group Meeting (PNG2018) (Institute of Macromolecular Chemistry, Prague, Czech, Jun. 17-21, 2018)
  26. "Hydrogels with Multi-Cylindrical Lamellar Bilayers: Swelling-Induced Contraction and Anisotropic Molecular Diffusion" K. Mito, M. A. Haque, T. Kurokawa, J. P. Gong, The 2nd International Symposium for Advanced Gel Materials & Soft Matters (ISAGMSM) (Renaissance Guiyang Hotel, Guiyang, China, Aug. 20-22, 2017)
  27. "Study on Contact Pattern Formation at Frictional Interface of Gel" S. Hirayama, S. Yashima, T. Kurokawa, J. P. Gong, The 13th International Symposium on Polymer Physics (PP'2018) (Xi'an International Conference Center, Xi'an, China, Jun. 11-15, 2018
  28. "Thermoresponsive Hydrogel Possessing Reversible Super Modulus Jumping" T. Nonoyama (Invited), Bangladesh Chemical Congress 2018 (Dhaka University, Dhaka, Bangladesh, Oct. 17-19, 2018
  29. "Tough and Variable-Band-Gap Photonic Hydrogel Displaying Programmable Angle-Dependent Color" M. A. Haque, K. Mito, T. Kurokawa, T. Nakajima, J. P. Gong, Fourth Conference of Bangladesh Crystallographic Association (University of Dhaka, Dhaka, Bangladesh, Jan. 20, 2018)
  30. “Deformation of 1D photonic hydrogels with lipid bilayers”, Gong JP, The 4th International Workshop on Soft Machines and Mechanics, Wyndham Grand Hotel, Xi’an City, Shaanxi Province, China, June 16, 2018
  31. “Effect of Anisotropic compliance on Adhesion in Water,” T. Kurokawa(Invited), First International Conference on 4D Materials and Systems (M01 Gel Symposium 2018) (Yamagata Nuniversity, Yonezawa, Yamagata, Aug. 26-30, 2018)
  32. “Effect of Inhomogeneous Compliance induced by Fiber Orientation in Polyampholyte Hydrogel on Adhesion in Water,” T. Kurokawa, INTERNATIONAL CONGRESS ON PURE & APPLIED CHEMISTRY (ICPAC) 2018 (Bayview Hotel Langkawi, Langkawi, Malaysia, October 30- Nov. 2, 2018)
  33. “Hydrogel Possessing Thermo Reversible Robustizing”, Nonoyama T, Lee YW, Ota, K, Fujioka K, Gong JP, 82nd Prague Meeting on Macromolecules - Polymer Networks and Gels 2018 and 24th Polymer Network Group Meeting (PNG2018), Institute of Macromolecular Chemistry, Prague, Czech, June 17-21, 2018
  34. “Study on Contact Pattern Formation at Frictional Interface of Gel”, Hirayama S, Yashima S, Kurokawa T, Gong JP, The 13th International Symposium on Polymer Physics (PP'2018), Xi’an International Conference Center, Xi’an, China, June 11-15, 2018
  35. "Hydrogels with Multi-Cylindrical Lamellar Bilayers: Swelling-Induced Contraction and Anisotropic Molecular Diffusion" T. Nakajima, K. Mito, A. M. Haque, T. Kurokawa, J. P. Gong, The 2nd International Symposium for Advanced Gel Materials & Soft Matters (ISAGMSM) (Guiyang, China, Aug. 20-22, 2017)
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Contact
gong [at] sci.hokudai.ac.jp