Dielectric and Sorption Responses of Hydrogen-Bonding Network of Amorphous C-60(OH)(12) and C-60(OH)(36)
Bibliographic Information
- Other Title
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- Dielectric and Sorption Responses of Hydrogen-Bonding Network of Amorphous C<sub>60</sub>(OH)<sub>12</sub> and C<sub>60</sub>(OH)<sub>36</sub>
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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.
Journal
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- Journal of Physical Chemistry C
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Journal of Physical Chemistry C 123 (38), 23545-23553, 2019-09-26
American Chemical Society
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Details 詳細情報について
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- CRID
- 1050848650297533952
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- NII Article ID
- 120006887716
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- NII Book ID
- AA1217589X
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- ISSN
- 19327455
- 19327447
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- HANDLE
- 2115/79316
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- Text Lang
- en
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- Article Type
- journal article
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- Data Source
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- IRDB
- Crossref
- CiNii Articles
- KAKEN