YOHHEI ADACHI

Last Updated :2024/06/05

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Assistant Professor
Web Site
E-mail
yadachihiroshima-u.ac.jp
Self-introduction
I am working on the synthesis and characterization of new pi-conjugated molecules incorporating typical elements such as boron.

Basic Information

Major Professional Backgrounds

  • 2017/04/01, 2020/03/31, Hiroshima University, Graduate School of Engineering, Assistant Professor
  • 2019/03/01, 2020/01/31, Rutgers University (USA), Postdoctoral Researcher (Host: Prof. Frieder Jakle)

Educational Backgrounds

  • Hiroshima University, Graduate School of Engineering, Department of Applied Chemistry, Japan, 2015/09, 2017/03
  • Hiroshima University, Graduate School of Engineering, Department of Applied Chemistry, Japan, 2014/04, 2015/09
  • Hiroshima University, School of Engineering, Cluster 3, Japan, 2010/04, 2014/03

Academic Degrees

  • Hiroshima University
  • Hiroshima University

Educational Activity

  • [Bachelor Degree Program] School of Engineering : Cluster 3(Applied Chemistry, Biotechnology and Chemical Engineering) : Program of Applied Chemistry
  • [Master's Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Applied Chemistry Program
  • [Master's Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Smart Innovation Program
  • [Doctoral Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Applied Chemistry Program
  • [Doctoral Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Smart Innovation Program

Research Fields

  • Chemistry;Materials chemistry;Organic and hybrid materials

Research Keywords

  • Boron Conjugated polymer Fluoride Ion Sensing Solid-state fluorescence Organic dye Organic field-effect transistor Dye-sensitized solar cell Organic thin film solar cell Mechanofluorochromism

Affiliated Academic Societies

Educational Activity

Course in Charge

  1. 2024, Liberal Arts Education Program1, 2Term, General Chemistry
  2. 2024, Liberal Arts Education Program1, 2Term, Introduction to Applied Chemistry, Chemical Engineering,and Biotechnology
  3. 2024, Undergraduate Education, 4Term, Technical English
  4. 2024, Undergraduate Education, 4Term, Exercises in Organic Chemistry
  5. 2024, Undergraduate Education, First Semester, Chemical Experiments I
  6. 2024, Undergraduate Education, Year, Graduation Thesis
  7. 2024, Graduate Education (Master's Program) , 1Term, Special Exercises on Applied Chemistry A
  8. 2024, Graduate Education (Master's Program) , 2Term, Special Exercises on Applied Chemistry A
  9. 2024, Graduate Education (Master's Program) , 3Term, Special Exercises on Applied Chemistry B
  10. 2024, Graduate Education (Master's Program) , 4Term, Special Exercises on Applied Chemistry B
  11. 2024, Graduate Education (Master's Program) , Academic Year, Special Study on Applied Chemistry
  12. 2024, Graduate Education (Master's Program) , 1Term, Special Exercises on Smart Innovation A
  13. 2024, Graduate Education (Master's Program) , 2Term, Special Exercises on Smart Innovation A
  14. 2024, Graduate Education (Master's Program) , 3Term, Special Exercises on Smart Innovation B
  15. 2024, Graduate Education (Master's Program) , 4Term, Special Exercises on Smart Innovation B
  16. 2024, Graduate Education (Master's Program) , Academic Year, Special Study on Smart Innovation
  17. 2024, Graduate Education (Doctoral Program) , Academic Year, Special Study on Smart Innovation

Award of Education

  1. 2021/03/19

Research Activities

Academic Papers

  1. ★, Conjugated polymers with thiophene-fused thiaborin units and their strong intermolecular interactions, POLYMER JOURNAL, 55, 489-496, 20221116
  2. Synthesis and Optical Properties of Anthryl-substituted Tetracyclic Borepins, CHEMISTRY LETTERS, 51(6), 654-657, 20220421
  3. Preparation of D-A copolymers based on dithiazologermole and germaindacenodithiazole as weak electron donor units, POLYMER JOURNAL, 2023
  4. Preparation of urea- and isocyanurate-containing polysilsesquioxane membranes for CO2 separation, JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 106(1), 149-157, 20221217
  5. Synthesis of thiazole-condensed germoles with enhanced electron-deficient properties, DYES AND PIGMENTS, 203, 110333, 20220426
  6. Development of Highly Water-Permeable Robust PSQ-Based RO Membranes by Introducing Hydroxyethylurea-Based Hydrophilic Water Channels, ACS APPLIED MATERIALS & INTERFACES, 14(18), 21426-21435, 20220511
  7. Development of robust and high-performance polysilsesquioxane reverse osmosis membranes modified by SiO2 nanoparticles for water desalination, SEPARATION AND PURIFICATION TECHNOLOGY, 296, 121421, 20220901
  8. Synthesis of D-A polymers with a disilanobithiophene donor and a pyridine or pyrazine acceptor and their applications to dyesensitized solar cells, RSC ADVANCES, 5(46), 36673-36679, 2015
  9. Synthesis and Properties of Benzofuran-Fused Silole and Germole Derivatives: Reversible Dimerization and Crystal Structures of Monomers and Dimers, ORGANOMETALLICS, 35(14), 2327-2332, 2016
  10. ★, Synthesis of organic photosensitizers containing dithienogermole and thiadiazolo[3,4-c]pyridine units for dye-sensitized solar cells, DALTON TRANSACTIONS, 45(35), 13817-13826, 2016
  11. Development of type-I/type-II hybrid dye sensitizer with both pyridyl group and catechol unit as anchoring group for type-I/type-II dye-sensitized solar cell, PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 18(44), 30662-30676, 2016
  12. Synthesis of pentamethyldisilanyl-substituted starlike molecule with triazine core and its application to dye-sensitized solar cells, JOURNAL OF ORGANOMETALLIC CHEMISTRY, 825, 63-68, 2016
  13. Dithienogermole-containing D-pi-A-pi-A Photosensitizers for Dye-sensitized Solar Cells, CHEMISTRY LETTERS, 46(3), 310-312, 2017
  14. Synthesis, optical and electrochemical properties, and photovoltaic performance of a panchromatic and near-infrared (D)(2-pi-A) type BODIPY dye with pyridyl group or cyanoacrylic acid, RSC ADVANCES, 7(22), 13072-13081, 2017
  15. Preparation of Dithienogermole-containing Polysilsesquioxane Films for Sensing Nitroaromatics, CHEMISTRY LETTERS, 46(4), 438-441, 2017
  16. Synthesis of dithienogermole-containing polythiophenes, SYNTHETIC METALS, 227, 87-92, 2017
  17. Studies on Spherically Distributed LUMO and Electron-Accepting Properties of Caged Hexakis(germasesquioxanes), ORGANOMETALLICS, 36(14), 2536-2540, 2017
  18. ★, Hybrid conjugated polymers with alternating dithienosilole or dithienogermole and tricoordinate boron units, POLYMER CHEMISTRY, 9(3), 291-299, 20180121
  19. Modification of TiO2 Surface by Disilanylene Polymers and Application to Dye-Sensitized Solar Cells, INORGANICS, 6(1), 3, 20171226
  20. ★, Synthesis and Properties of Benzo[d]dithieno[b,f]borepins, ORGANOMETALLICS, 37(6), 869-881, 20180221
  21. Optical and Photosensitizing Properties of Spiro (dipyridinogermole)(dithienogermole)s with Eletron-Donating Amino and Electron-Withdrawing Pyridinothiadiazole Substituents, CHEMISTRYSELECT, 3(30), 8604-8609, 20180808
  22. Hydrophobic modification of SiO2 surface by aminosilane derivatives, COMPOSITE INTERFACES, 26(1), 15-25, 20190426
  23. Hydrophobic modification of SiO2 surface with disilanobiphenyl and disilanobithiophene and the application to pentacene-based organic transistors, COMPOSITE INTERFACES, 26(3), 221-231, 20190304
  24. Preparation and reactions of 4,4-dilithiodithienogermole, JOURNAL OF ORGANOMETALLIC CHEMISTRY, 883, 47-51, 20190315
  25. ★, Intramolecular Energy Transfer in Dithienogermole Derivatives, CHEMISTRY-A EUROPEAN JOURNAL, 25(19), 4974-4983, 20190401
  26. Synthesis, Properties, and Complex Formation of Antimony- and Bismuth-Bridged Bipyridyls, ORGANOMETALLICS, 38(7), 1516-1523, 20190408
  27. Synthesis of Pyridinothienogermoles as Unsymmetrically Condensed Germoles, ORGANOMETALLICS, 38(7), 1606-1613, 20190408
  28. Luminescent Di- and Tetranuclear Gold Complexes of Bis(diphenylphosphinyl)-Functionalized Dipyrido-Annulated N-Heterocyclic Carbene, INORGANIC CHEMISTRY, 58(9), 6328-6335, 20190506
  29. Bis(diphenylphosphinyl)-functionalized dipyrido-annulated NHC towards copper(i) and silver(i), DALTON TRANSACTIONS, 48(32), 12250-12256, 20190828
  30. Helical assembly of a dithienogermole exhibiting switchable circularly polarized luminescence, CHEMICAL COMMUNICATIONS, 55(71), 10607-10610, 20190914
  31. Synthesis and optical properties of polymers with bithiophene condensed with disilacyclohexadiene rings and benzothiadiazole, JOURNAL OF ORGANOMETALLIC CHEMISTRY, 900, 20191101
  32. Direct comparison of dithienosilole and dithienogermole as pi-conjugated linkers in photosensitizers for dye-sensitized solar cells, DALTON TRANSACTIONS, 48(44), 16671-16678, 20191128
  33. NIR-shielding films based on PEDOT-PSS/polysiloxane and polysilsesquioxane hybrid, JOURNAL OF APPLIED POLYMER SCIENCE, 137(7), 20200215
  34. Synthesis of nonplanar bipyridyls bridged by disilane and disiloxane and their phosphorescent copper complexes, APPLIED ORGANOMETALLIC CHEMISTRY, 34(1), 20200111
  35. The Substituent Effect of Bridged Triarylamine Helicenes on Light-emitting and Charge Transfer Properties, CHEMISTRY LETTERS, 49(5), 457-460, 20200227
  36. Synthesis and optical properties of compounds via platinum-catalyzed hydrosilylation of triethynyltriazine and silyl-substituted oligothiophenes, JOURNAL OF ORGANOMETALLIC CHEMISTRY, 917, 121275, 20200409
  37. ★, Extended conjugated borenium dimers via late stage functionalization of air-stable borepinium ions, CHEMICAL COMMUNICATIONS, 56(38), 5119-5122, 20200416
  38. Synthesis and properties of hypervalent electron-rich pentacoordinate nitrogen compounds, CHEMICAL SCIENCE, 11(19), 5082-5088, 20200422
  39. Synthesis of spiro(dipyridinogermole)(dithienogermole)-copper complexes, JOURNAL OF ORGANOMETALLIC CHEMISTRY, 921, 121297, 20200520
  40. Crystal Structures and Phosphorescent Properties of Group 14 Dipyridinometalloles and Their Copper Complexes, CHEMPLUSCHEM, 85(8), 1912-1918, 20200826
  41. Optical Properties of Silicon Nanosheets Modified with Triphenylamine and Quinoline Units: Charge and Energy Transfer from Conjugated Substituents to the Catenated Silicon Backbone, JOURNAL OF PHYSICAL CHEMISTRY C, 124(31), 17347-17351, 20200708
  42. Photo-energy Transfer in sigma-pi Conjugated Polysilanes Prepared by Platinum-catalyzed Reactions of Arylacetylenes with Layered Polysilane, CHEMISTRY LETTERS, 49(10), 1174-1177, 20200704
  43. Synthesis of spiro(dipyridinogermole)(dithienogermole)-copper complexes, JOURNAL OF ORGANOMETALLIC CHEMISTRY, 921, 121297, 20200520
  44. Optical Properties of Silicon Nanosheets Modified with Triphenylamine and Quinoline Units: Charge and Energy Transfer from Conjugated Substituents to the Catenated Silicon Backbone, JOURNAL OF PHYSICAL CHEMISTRY C, 124(31), 17347-17351, 20200708
  45. Complexation of B(C6F5)(3) and 9,10-Dicyanoanthracene: Dual Role of Borane as Spatial and Electronic Tuner, CHEMISTRY LETTERS, 49(9), 1022-1025, 202009
  46. Complexation of B(C6F5)(3) and 9,10-Dicyanoanthracene: Dual Role of Borane as Spatial and Electronic Tuner, CHEMISTRY LETTERS, 49(9), 1022-1025, 2020
  47. Photo-energy Transfer in sigma-pi Conjugated Polysilanes Prepared by Platinum-catalyzed Reactions of Arylacetylenes with Layered Polysilane, CHEMISTRY LETTERS, 49(10), 1174-1177, 20200704
  48. ★, Thiophene-based twisted bistricyclic aromatic ene with tricoordinate boron: a new n-type semiconductor, CHEMICAL COMMUNICATIONS, 57(11), 20210113
  49. ★, Optical Characteristics of Hybrid Macrocycles with Dithienogermole and Tricoordinate Boron Units, CHEMISTRY-A EUROPEAN JOURNAL, 27(10), 3306-3314, 20210202
  50. Synthesis of spirodithienogermole with triphenylamine units as a dopant-free hole-transporting material for perovskite solar cells, JOURNAL OF MATERIALS CHEMISTRY C, 9(6), 2001-2007, 20210108
  51. ★, Effect of the conjugation pathway on the electronic structures of p-pi* conjugated polymers with fused borepin units, POLYMER CHEMISTRY, 12(23), 3471-3477, 20210621
  52. Preparation of polysilsesquioxane reverse osmosis membranes for water desalination from tris[(ethoxysilyl)alkyl]amines by sol-gel process and interfacial polymerization, APPLIED ORGANOMETALLIC CHEMISTRY, 35(11), e6374, 20210718
  53. Synthesis and optical properties of disiloxane-linked decathiophene and dodecathiophene polymers, POLYMER JOURNAL, 54(1), 91-96, 20210924
  54. Development of Highly Water-Permeable Robust PSQ-Based RO Membranes by Introducing Hydroxyethylurea-Based Hydrophilic Water Channels, ACS APPLIED MATERIALS & INTERFACES, 14(18), 21426-21435, 20220429
  55. Development of PSQ-RO membranes with high water permeability by copolymerization of bis[3-(triethoxysilyl)propyl]amine and triethoxy (3-glycidyloxypropyl)silane, JOURNAL OF MEMBRANE SCIENCE, 644, 120162, 20220215
  56. m-Phenylene linked macrocycle composed of electron-rich dithienogermole and electron-deficient tricoordinate boron units, POLYMER, 239, 124404, 20220117
  57. Optical Properties of Boron-Incorporated Analogues of Tetrathienoanthracene, ORGANOMETALLICS, 41(10), 1225-1231, 20220523
  58. Preparation of amine- and ammonium-containing polysilsesquioxane membranes for CO2 separation, POLYMER JOURNAL, 54(7), 875-882, 20220324

Publications such as books

  1. 2017/12/19, Main Group Strategies towards Functional Hybrid Materials, Germanium and Tin in Conjugated Organic Materials, Wiley, 2017, 12, Scholarly Book, Joint work, English, Y Adachi, J Ohshita, 9781119235972, 515

Awards

  1. 2018/12/21, IPC2018 Poster Award: NPG Asia Materials Award, IPC2018, Synthesis and Properties of Benzo[d]dithieno[b,f]borepins and Their Polymers

External Funds

Acceptance Results of Competitive Funds

  1. Adaptable and Seamless Technology transfer Program through targetdriven R&D(A-STEP), 2020/11/02, 2022/03/31
  2. 2021/10, 2022/09
  3. Adaptable and Seamless Technology transfer Program through targetdriven R&D(A-STEP), 2020/11/02, 2022/03/31
  4. 2020, 2021
  5. 2018/04/01, 2019/03/31
  6. KAKENHI(Grant-in-Aid for Early-Career Scientists), 2019, 2021
  7. KAKENHI(Grant-in-Aid for Research Activity Start-up), 2017, 2018