Mahdi Ghamsari1, Tayyebeh Madrakian2, Abbas Afkhami1, Mazaher Ahmadi1. 1. Faculty of Chemistry, Bu-Ali Sina University, Hamedan, 6517838695, Iran. 2. Faculty of Chemistry, Bu-Ali Sina University, Hamedan, 6517838695, Iran. madrakian@basu.ac.ir.
Abstract
The construction of graphene-based microfibers with reinforced mechanical and electrical properties has been the subject of numerous researches in recent years. However, the fabrication of graphene-based fibers with remarkable optical features still remains a challenge and has not been addressed so far. This paper aims to report a series of flexible self-assembled fibers, synthesized through a few-minute sonication of thermally oxidized graphene oxide nanosheets, so-called Nanoporous Over-Oxidized Graphene (NOG), in an acidic medium. These free-standing glassy fibers were classified into four distinct morphological structures and displayed a collection of intriguing optical properties comprising high transparency, strong birefringence, fixed body colorations (e.g. colorless, blue, green, and red), tunable interference marginal colorations, UV-visible-near IR fluorescence, and upconversion emissions. Moreover, they exhibited high chemical stability in strongly acidic, basic, and oxidizing media. The foregoing notable attributes introduce the NOG fiber as a promising candidate both for the construction of graphene-based photoluminescent textiles and the development of a wide variety of optical applications.
The construction of n class="Chemical">graphene-based microfibers with reinforced mechanical and electrical properties has been the subject of numerous researches in recent years. However, the fabrication of graphene-based fibers with remarkable optical features still remains a challenge and has not been addressed so far. This paper aims to report a series of flexible self-assembled fibers, synthesized through a few-minute sonication of thermally oxidized graphene oxide nanosheets, so-called Nanoporous Over-Oxidized Graphene (NOG), in an acidic medium. These free-standing glassy fibers were classified into four distinct morphological structures and displayed a collection of intriguing optical properties comprising high transparency, strong birefringence, fixed body colorations (e.g. colorless, blue, green, and red), tunable interference marginal colorations, UV-visible-near IR fluorescence, and upconversion emissions. Moreover, they exhibited high chemical stability in strongly acidic, basic, and oxidizing media. The foregoing notable attributes introduce the NOG fiber as a promising candidate both for the construction of graphene-based photoluminescent textiles and the development of a wide variety of optical applications.
Authors: Yingpeng Wu; Ningbo Yi; Lu Huang; Tengfei Zhang; Shaoli Fang; Huicong Chang; Na Li; Jiyoung Oh; Jae Ah Lee; Mikhail Kozlov; Alin C Chipara; Humberto Terrones; Peishuang Xiao; Guankui Long; Yi Huang; Fan Zhang; Long Zhang; Xavier Lepró; Carter Haines; Márcio Dias Lima; Nestor Perea Lopez; Lakshmy P Rajukumar; Ana L Elias; Simin Feng; Seon Jeong Kim; N T Narayanan; Pulickel M Ajayan; Mauricio Terrones; Ali Aliev; Pengfei Chu; Zhong Zhang; Ray H Baughman; Yongsheng Chen Journal: Nat Commun Date: 2015-01-20 Impact factor: 14.919