Porphyrin Functionalized Graphene Sheets in Aqueous Suspensions: From the Preparation of Graphene Sheets to Highly Conductive Graphene Films

2010 ◽  
Vol 114 (18) ◽  
pp. 8227-8234 ◽  
Author(s):  
Jianxin Geng ◽  
Hee-Tae Jung
Keyword(s):  
Graphene Sheets ◽  
Functionalized Graphene ◽  
Aqueous Suspensions ◽  
Graphene Films

Flexible Graphene Films via the Filtration of Water-Soluble Noncovalent Functionalized Graphene Sheets

2008 ◽  
Vol 130 (18) ◽  
pp. 5856-5857 ◽  
Author(s):  
Yuxi Xu ◽  
Hua Bai ◽  
Gewu Lu ◽  
Chun Li ◽  
Gaoquan Shi
Keyword(s):  
Water Soluble ◽  
Graphene Sheets ◽  
Functionalized Graphene ◽  
Graphene Films

Polyimide nanocomposites with functionalized graphene sheets

2017 ◽  
Vol 31 (6) ◽  
pp. 837-861 ◽  
Author(s):  
Jin-Hae Chang
Keyword(s):  
Electrical Conductivity ◽  
Filler Content ◽  
Coefficient Of Thermal Expansion ◽  
Barrier Properties ◽  
Decomposition Temperature ◽  
Graphene Sheets ◽  
Functionalized Graphene ◽  
Hybrid Films ◽  
Initial Decomposition Temperature ◽  
Transmission Electron Microscopy Analysis

Polyimide (PI) nanocomposites containing two different functionalized graphene sheets (FGSs) were synthesized, and their thermal properties, morphology, oxygen permeability, and electrical conductivity were compared. Hexadecylamine–graphene sheets and 4-amino- N-hexadecylbenzamide–graphene sheets were utilized. Hybrid films were obtained from blended solutions of PI and FGSs, with the filler content with respect to the PI varying from 0 wt% to 10 wt%. The differences in the properties of the PI matrix were then analyzed with respect to filler content. Transmission electron microscopy analysis confirmed that the two FGSs were dispersed homogeneously throughout the polymer matrix, although some FGS aggregates were also formed. Furthermore, it was observed that the addition of small amounts of FGS nanofiller was sufficient to improve the coefficient of thermal expansion, the gas barrier properties, and the electrical conductivity of the hybrid films. In contrast, the glass transition temperature and the initial decomposition temperature of the PI hybrid films continued to decrease with increasing FGS content.

Functionalization of wet-spun graphene films using aminophenol molecules for high performance supercapacitors

2018 ◽  
Vol 2 (12) ◽  
pp. 2313-2319 ◽  
Author(s):  
Muhammad Salman ◽  
Xingyuan Chu ◽  
Tieqi Huang ◽  
Shengying Cai ◽  
Qiuyan Yang ◽  
...  
Keyword(s):  
High Performance ◽  
Graphene Film ◽  
Wet Spinning ◽  
Functionalized Graphene ◽  
Graphene Films

Aminophenol isomer functionalized graphene film electrodes are fabricated with wet-spinning technology for high performance supercapacitors.

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