Atomic Structure Of The Continuous Random Network Of Amorphous C ...

Condensed Matter > Disordered Systems and Neural Networks arXiv:2108.06257 (cond-mat) [Submitted on 13 Aug 2021] Title:Atomic structure of the continuous random network of amorphous C[(C6H4)2]2, PAF-1 Authors:Guanqun Cai, He Lin, Ziqiang Zhao, Jiaxun Liu, Anthony E Phillips, Thomas F Headen, Tristan G A Youngs, Yang Hai, Haolai Tian, Chunyong He, Yubin Ke, Juzhou Tao, Teng Ben, Martin T Dove View a PDF of the paper titled Atomic structure of the continuous random network of amorphous C[(C6H4)2]2, PAF-1, by Guanqun Cai and 13 other authors View PDF

Abstract:We demonstrate that the amorphous material PAF-1, C[(C6H4)2]2, forms a continuous random network in which tetrahedral carbon sites are connected by 4,4'-biphenyl linkers. Experimental neutron total scattering measurements on deuterated, hydrogenous, and null-scattering samples agree with molecular dynamics simulations based on this model. From the MD model, we are able for the first time to interrogate the atomistic structure. The small-angle scattering is consistent with Porod scattering from particle surfaces, of the form Q^{-4}, where Q is the scattering vector. We measure a distinct peak in the scattering at Q = 0.45 Å^{-1}, corresponding to the first sharp diffraction peak in amorphous silica, which indicates the structural analogy between these two amorphous tetrahedral networks.

Comments:	17 pages
Subjects:	Disordered Systems and Neural Networks (cond-mat.dis-nn); Materials Science (cond-mat.mtrl-sci)
Cite as:	arXiv:2108.06257 [cond-mat.dis-nn]
(or arXiv:2108.06257v1 [cond-mat.dis-nn] for this version)
https://doi.org/10.48550/arXiv.2108.06257 Focus to learn more arXiv-issued DOI via DataCite

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From: Anthony Phillips [view email] [v1] Fri, 13 Aug 2021 14:15:34 UTC (13,996 KB) Full-text links:

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