| Title: | Dielectric and Sorption Responses of Hydrogen-Bonding Network of Amorphous C-60(OH)(12) and C-60(OH)(36) |
| Authors: | Uchikawa, Shota Browse this author |
| Kawasaki, Ayumi Browse this author |
| Hoshino, Norihisa Browse this author →KAKEN DB |
| Takeda, Takashi Browse this author →KAKEN DB |
| Noro, Shin-ichiro Browse this author →KAKEN DB |
| Takahashi, Kiyonori Browse this author →KAKEN DB |
| Nakamura, Takayoshi Browse this author →KAKEN DB |
| Sato, Nozomi Browse this author |
| Kokubo, Ken Browse this author |
| Sakurai, Hidehiro Browse this author →KAKEN DB |
| Akutagawa, Tomoyuki Browse this author →KAKEN DB |
| Issue Date: | 26-Sep-2019 |
| Publisher: | American Chemical Society |
| Journal Title: | Journal of Physical Chemistry C |
| Volume: | 123 |
| Issue: | 38 |
| Start Page: | 23545 |
| End Page: | 23553 |
| Publisher DOI: | 10.1021/acs.jpcc.9b06951 |
| Abstract: | Hydrophilic fullerene derivatives of C-60(OH)(12) (1) and C-60(OH)(36) (2) bearing different numbers of -OH groups formed amorphous solids of 1.x(H2O) (x = 5-10) and 2.x(H2O) (x = 15-22), respectively, according to the humidity. The thermally activated dynamic molecular motion of polar H2O was confirmed in the DSC and dielectric spectra. Three-dimensional O-H center dot center dot center dot O hydrogen-bonding networks in amorphous 1 and 2 produced extrinsic adsorption-desorption pores with a hydrophilic environment posed by -OH groups, where N-2, CO2, H-2, and CH4 gases vapors and polar H2O, MeOH, and EtOH molecules reversibly adsorbed into the networks. The molecular motion of polar H2O was directly observed in dielectric enhancement and protonic conductivity in three-dimensional O-H center dot center dot center dot O hydrogen-bonding networks. The Brunauer-Emmett-Teller (BET) specific surface areas of amorphous 1 and 2 were 315 and 351 m(2) g(-1), respectively, from the CO2 sorption isotherms. Reversible vapor sorption behaviors with structural changes of amorphous 1 and 2 were also confirmed for the polar H2O, MeOH, and EtOH. |
| Rights: | This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of Physical Chemistry C, copyright c American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acs.jpcc.9b06951 |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/79316 |
| Appears in Collections: | 環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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