2026

55. H. Sun, T. Mikata, T. Takahashi, T. Higashihara,* “Aromatic Sulfide Conjugation-Break Spacers Enabling Stretchable Organic Electronics”, 2026 International Polyimide Conference, Crowne Plaza Guangzhou Huadu, Guangzhou, China, Oral, 5, p.063 (July 8–12, 2026).

2025

54. T. Higashihara,* “Environmentally friendly and controlled synthesis of semiconducting polymers via condensative chain polymerization”, 2025 International Consortium on Advanced Green Materials and Technology Symposium (2025 AGMT Taiwan Symposium), National Taipei University of Technology, Taipei, Taiwan, p.13 (November 4–7, 2025).

53. T. Higashihara,* “Synthesis of Semiconducting Polymers by Nonstoichiometric Step–growth Polymerization Based on Intramolecular Catalyst Transfer System”, Taiwan–Japan Bilateral Polymer Symposium (TJBPS) 2025, National Cheng–Kung University, Tainan, Taiwan, p.57–58 (August 29– September 5, 2025).

52. T. Higashihara,* “Controlled Synthesis of Semiconducting Polymers via Condensative Chain Polymerization and Application to Organic Thermoelectric Conversion Materials”, 2025 International Polyimide Conference, Shanghai Minhag Platinum Hanjue Hotel, Shanghai, China, Online, Oral, 15, p.036 (July 9–12, 2025).

51. T. Higashihara,* “Nonstoichiometric Step–Growth Polymerization Based on Intramolecular Catalyst Transfer System”, The 42th International Conference of Photopolymer and Technology (ICPST–42), Arcrea Himeji, Himeji, Hyogo, B01–01 (June 24–27, 2025).

50. T. Higashihara,* “Intrinsically Stretchable Semiconducting Polymer Materials”, 2025 PIRE Get Together Meeting, Yamagata University, Yonezawa, Yamagata (June 20, 2025).

2024

49. T. Higashihara,* “Intrinsically Stretchable N–type Naphthalene–diimide–based Semiconducting Polymer Materials”, The International Conference on Flexible and Printed Electronics (ICFPE 2024), National Taiwan University, Taipei, Taiwan, p.75 (August 28–30, 2024).

48. T. Higashihara,* “N–type Naphthalene–diimide–based Semiconducting Polymer Materials Suited for Stretchable Electronics”, 2024 International Polyimide Conference, Beijing, China, Online, p.033 (June 18–20, 2024).

2023

47. T. Higashihara,* “Intrinsically Stretchable N–type Semiconducting Polymer Materials”, International Congress on Pure & Applied Chemistry Bali 2023 (ICPAC 2023), Bali, Indonesia, Online, PMC13, p.28 (September 12–17, 2023).

46. T. Higashihara,* “Intrinsically Stretchable N–type Semiconducting Polymer Materials”, Invited Lecture, Stanford University, Shriram 368, CA, USA (May 11, 2023).

45. T. Higashihara,* “Challenges in Polymer Design and Synthesis for Stretchable Electronics”, International mini–Symposium on Polymer Materials (ISPM 2023), National Taiwan University (NTU), Taipei, Taiwan, p.7 (March 31, 2023).

44. T. Higashihara,* “Challenges in Polymer Synthesis for Stretchable Electronics”, US–Japan Partnership in Excitonic Soft Materials for Clean Energy Kick–Off Meeting, Yamagata University, Yonezawa, Yamagata, Japan (March 13, 2023).

2022
43. T. Higashihara,* “Green and Controlled Synthesis of Functional Semiconducting Polymers for Organic Electronics”, International Congress on Pure & Applied Chemistry (ICPAC) Kota Kinabalu 2022, Kota Kinabalu, Malaysia, PMC23, p.319 (November 22–27, 2022).

42. T. Higashihara,* “Nonstoichiometric Migita–Kosugi–Stille Coupling Polycondensation for Synthesizing p–conjugated polymers”, Polycondensation 2022, ENA Suite Hotel, Soul, Korea (One–line), IL07, p.28 (September 15–18, 2022).

41. T. Higashihara,* “Precise Design and Synthesis of Semiconducting Polymers Suited for Organic Electronic Materials”, Shiny Chemical Lectureship, National Taiwan University, Taipei, Taiwan (One–line) (January 13, 2022).

2021

2020

2019

40. T. Higashihara,* “Green Synthesis of Semiconducting Polymers Based on Chain–growth Condensation Polymerization”, Federation of Asian Polymer Societies (FAPS) 2019 Polymer Congress: Polymers for Cutting–Edge Technological Innovations, Taipei, Taiwan (October 27–30, 2019).

39. T. Higashihara,* “Synthesis and Deformable Hierarchical Nanostructure of Intrinsically–Stretchable and Semiconducting ABA Triblock Copolymers”, Invited Lecture, National Chung Hsing University, Taichung, Taiwan (October 25, 2019).

38. T. Higashihara,* “Synthesis, Morphology, and Optoelectronic Properties of Semiconducting Block Copolymers”, The 44th Symposium of Grubbs Center for Polymers and Catalysis 2019: Advanced Polymeric Materials, Gwangju Institute of Science and Technology (GIST), Gwangju, Korea (September 5, 2019).

37. T. Higashihara,* “Chain–Growth Polycondensation for Transition–metal–free and Halogen–free Synthesis of Semiconducting Polymers”, Invited Lecture, National Central University (NCU), Taoyuan, Taiwan (March 19, 2019).

36. T. Higashihara,* “Introductory of YU – A Smart Place”, Invited Lecture, National Sun Yat–Sen University (NSYSU), Kaohsiung, Taiwan (March 15, 2019).

35. T. Higashihara,* “Chain–growth Polycondensation for Transition–metal–free and Halogen–free Synthesis of Semiconducting Polymers”, The First International Conference of Polymeric and Organic Materials in Yamagata University (IPOMY), Yamagata University, Yonezawa, Yamagata, Japan (January 24–26, 2019).

2018

34. T. Higashihara,* E. Goto, K. Sato, S. Sato, “Transition–metal–free and Halogen–free Controlled Synthesis of Semiconducting Polymers Using Anionic Monomers”, Emerging Polymer Technologies Summit 2018 (EPTS’18), Hanoi University of Science, Vietnam National University, Hanoi, Vietnam (November 4–8, 2018).

33. T. Higashihara,* “Synthesis and Morphological Study of Intrinsically Stretchable p–Conjugated Block Copolymers”, Seminar of Soft Materials and Electronics, National Taipei University of Technology (Taipei Tech), Taipei, Taiwan (October 24, 2018).

32. T. Higashihara,* “Transition–metal–free and Halogen–free Synthesis of Semiconducting Polymers by Using Anionic Monomers”, The 18th International Symposium on Advanced Organic Photonics (ISAOP–18), Yamagata University, Yonezawa, Yamagata, Japan, p.10 (September 25–27, 2018).

31. T. Higashihara,* “Synthesis and Morphological Study of Intrinsically Stretchable–Conjugated Block Copolymers”, The 4th International GISAS Conference (GISAS 2018), Gyeongju, Korea (September 4–7, 2018).

2017

30. T. Higashihara,* “Synthesis of Semiconducting Elastomers Having “Soft” Polythiophene Segments”, Emerging Polymer Technologies Summit 2017 (EPTS’17), Royal Melbourne Institute of Technology (RMIT), Melbourne, Australia, XXXX, p.X (November 22–24, 2017).

29. T. Higashihara,* “Soft Semiconducting Polymers for Stretchable Organic Field Effect Transistor”, Invited Lecture, Monash University, Clayton, Australia (November 20, 2017).

28. T. Higashihara,* “Synthesis of Semiconducting Polymers for Stretchable Organic Field Effect Transistor Application”, 2017 NCU Ch&ME Workshop: Materials Chemistry and Physics, National Central University, Taoyuan, Taiwan, p.13–14 (November 10, 2017).

27. T. Higashihara,* “Regioblock Copolythiophene”, The 18th International Union of Materials Research Societies–International Conference in Asia (IUMRS–ICA), Taipei, Taiwan, D3–24 (November 5–9, 2017).

26. T. Higashihara,* “Introductory of YU – A Smart Place”, Joint Symposium of Yamagata University and Donghua University, Yamagata University, Yonezawa, Yamagata, Japan (June 7, 2017).

25. T. Higashihara,* “Higashihara Lab. Activity 2017”, BCIT–SFU–YU research meeting and lab tour toward future collaboration, Yamagata University, Yonezawa, Yamagata, Japan (March 4–5, 2017).

2016

24. T. Higashihara,* “Architectural Design of p–Conjugated Polymers for Organic Electronics”, Hangyang University and Yamagata University Mini Workshop 2016, Yamagata University, Yonezawa, Yamagata, Japan (January 12, 2016).

2015

23. T. Higashihara,* “Synthesis and Morphology of Well–defined Block Copolymers Containing Poly(3–hexylthiophene) segments and Their Application to Organic Solar Cells”, Invited Lecture, Pohang University of Science and Technology (POSTECH), Pohang, Korea (October 2, 2015).

22. T. Higashihara,* “Synthesis and Characterization of Well–defined Polythiophenes and Their Derivatives with Narrow Molecular Weight Distribution”, Yamagata University–France–Brazil Advanced Polymer Chemistry Symposium, Yamagata University, Yonezawa, Yamagata, Japan (June 4, 2015).

2014

21. T. Higashihara,* E. Goto, “Precision Synthesis of Regioregular Poly(3–hexylthiophene) with Low Dispersity Using Zincate Complex Intermediates”, 2014 Taiwan–Japan Bilateral Polymer Symposium, National Cheng Kung University (NCKU), Tainan, Taiwan, A–13, p.19 (November 19–22, 2014).

20. 東原 知哉,* 福田 斉二郎, 小金澤 智之, 戸木田 雅利, 川内 進, 森 秀晴, 上田充, “1,3,4–アゾ–ル骨格を有するπ共役系高分子の合成と有機薄膜太陽電池への応用”, The 31th International Conference of Photopolymer Science and Technology, Materials & Process for Advanced Microlithography and Nanotechnology, Chiba University, Chiba, Japan, Oral, B3–15 (July 8–11, 2014).

19. T. Higashihara,* “Synthesis and Morphology of Well–defined Block Copolymers Containing Poly(3–hexylthiophene) segments and Their Application to Organic Solar Cells”, Invited Lecture, Laboratoire de Chimie des Polymères Organiques (LCPO), University of Bordeaux, Bordeaux, France (March 26, 2014).

18. T. Higashihara,* “Precision Synthesis of Tailor–made Polythiophene–based Materials and Their Application to Organic Solar Cells”, The 3rd International Symposium of Green Map Institute and Life 3D–Printing Innovation Center at Yamagata University, Yamagata University, Yonezawa, Yamagata, Japan (January 23–25, 2014).

2013
17. T. Higashihara,* “Precision Synthesis of Regioregular Poly(3–hexylthiophene) Using Zincate Complex”, The 13th Pacific Polymer Conference (PPC13), Grand Hi–Lai Arena, Kaohsiung, Taiwan, S10–8 (November 17–22, 2013).

16. T. Higashihara,* T. Mizobe, W.–C. Chen, M. Ueda, “Synthesis of New Thiadiazole–containing Polythiophene Derivatives and Their Application to Organic Solar Cells”, The 30th International Conference of Photopolymer Science and Technology, Materials & Process for Advanced Microlithography and Nanotechnology, Chiba University, Chiba, Japan (June 25–28, 2013).

15. T. Higashihara,* “Precision Synthesis of Tailor–made Polythiophene–based Materials and Their Application to Organic Solar Cells”, 第93春季年会Asian International Symposium–Polymer–, Ritsumeikan University, Kusatsu, Shiga (March 22–25, 2013).

14. T. Higashihara,* “Synthesis of Block Copolymers and Their Application to Organic Photovoltaics”, The 4th International Symposium for Young Organic Chemists (ISYOC), NIMS, Tsukuba, Japan (March 7–8, 2013).

2012

2011

13. T. Higashihara,* Y.–C. Lai, J.–H. Tsai, W.–C. Chen, M. Ueda, “Enhancement of P3HT/PCBM Photovoltaic Efficiency and Stability Based on Surfactant Approach”, IUMRS International Conference in Asia 2011, XXXX, Taipei, Taiwan (September 19–22, 2011).

12. T. Higashihara,* “Synthesis of Regioregular Poly(3–hexylthiophene) with Low Polydispersity Using A Zincate Complex, tBu4ZnLi2: Toward a Purification–free System”, 2011 Taiwan–Japan Bilateral Polymer Symposium, XXXX, Hsinchu, Taiwan (September 14–17, 2011).

11. T. Higashihara,* “Controlled Synthesis of Regioregular Poly(3–hexylthiophene) with Low Polydispersity Using Zincate Complex: Toward a Purification–free System”, IP’11 Program International Symposium on Ionic Polymerizations, University of Akron, Akron, OH, USA (July 10–15, 2011).

2010

10. T. Higashihara,* K. Ohshimizu, M. Ueda, “Synthesis of Novel P3HT–Based Block Copolymers and Their Self–Assembly Behavior”, 2010 International Symposium on Nano Structures (2010 ISNS), POSCO International Center, Pohang University of Science and Technology (POSTECH), Pohang, Korea (November 4–5, 2010).

9. T. Higashihara,* “Synthesis of P3HT–based Block Copolymers and Their Application to Photovoltaic Cells”, Invited Lecture, University of Massachusetts Lowell, Olney Hall, Massachusetts, MA, USA (October 8, 2010).

8. T. Higashihara,* A. Hirao, M. Ueda, “New Block Copolymers Containing Poly(3–hexylthiophene) Segments”, The 74th Prague Meetings on Macromolecules, XXXX, Prague, Czech Republic (July 18–22, 2010).

7. T. Higashihara,* J.–H. Tsai, Y.–C. Lai, C.–J. Lin, W.–C. Chen, M. Ueda, “Synthesis of Well–defined Coil–rod–coil Triblock Copolymers Containing Poly(3–hexylthiophene) Segments and Their Surfactant Use in Photovoltaics”, 2010 Japan–Taiwan Bilateral Polymer Symposium, Hokkaido University, Sapporo, Japan (July 1–2, 2010).

6. T. Higashihara,* “Synthesis of Well–defined Block Copolymers with Poly(3–hexylthiophene) and Poly(4–vinyltriphenylamine) Segments”, Kore–Japan Young Scientist Symposium, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea (March 4–7, 2010).

2009
5. T. Higashihara,* A. Hirao, M. Ueda, “Synthesis of Novel Coil–rod–coil Triblock Copolymers Containing Regioregular Poly(3–hexylthiophene) Segments”, The 19th IUPAC International Symposium on Ionic Polymerization 2009, XXXX, Krakow, Poland, July 26–31, 2009.

4. T. Higashihara,* M. Ueda, “Synthesis of Novel Coil–rod–coil Triblock Copolymers Containing Regioregular Poly(3–hexylthiophene) Segments”, 2009 Taiwan–Japan Bilateral Polymer Symposium, XXXX, Taipei, Taiwan (April 22–23, 2009).

3. T. Higashihara,* “Synthesis of Block Copolymers Containing Regioregular Poly(3–hexylthiophene) Segments and Its Application to Photovoltaic Cells”, Invited Lecture, University of Massachusetts Lowell, Olney Hall, MA, USA (March 26, 2009).

2008
2. T. Higashihara,* M. Ueda, “Synthesis of Polystyrene–b–Poly(3–hexylthiophene)–b–Polystyrene and Its Self–Assembly to Nanostructures”, Asia Polymer Symposium (APOSYM) 2008, XXXX, Jinan, China, October 11–16, 2008.

1. T. Higashihara, A.Hirao*, “Successive Synthesis of Well–defined Star–branched Polymers by an Iterative Approach Based on Living Anionic Polymerization”, The 3rd International Symposium of X–ray and Neutron Scattering on Integrated Molecular System, Pohang University of Science and Technology (POSTECH), Pohang, Korea (June 27–29, 2005).