title: In Situ Synthesis and Characterization of Poly(aryleneethynylene)-Grafted Reduced Graphene Oxide.
abstract: Using highly soluble bromo-functionalized reduced graphene oxide (RGBr) as a key graphene template for surface-directing Sonogashira-Hagihara polymerization, a novel soluble poly(arylene-ethynylene)-grafted reduced graphene oxide, hereafter abbreviated as PAE-g-RGO, was prepared in situ. The entirely different electron distribution of LUMO and HOMO of PAE-g-RGO suggested the existence of a charge-transfer (CT) state (PAE(.-) -RGO(.+) ). The negative ΔGCS value (-2.57 eV) indicates that the occurrence of the charge separation via (1) RGO* in o-DCB is exothermic and favorable. Upon irradiation with 365 nm light, the light-induced electron paramagnetic resonance (LEPR) spectrum of PAE-g-RGO showed a decrease in the spin-state density owing to photoinduced intramolecular electron transfer events in this system. A sandwich-type Al/PAE-g-RGO/ITO device showed representative bistable electrical switching behavior. The nonvolatile memory performance was attributed to the CT-induced conductance changes, which was supported by molecular computation results and conductive atomic force microscopy (C-AFM) images.
authors.affiliation: Key Lab for Advanced Materials, Institute of Applied Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China.
authors.forename: Sai
authors.initials: S
authors.lastname: Sun
authors.affiliation: College of Chemistry and Chemical Engineering, Shanghai Jiaotong University, 800 Dongchuan Rood, Shanghai, 200240, P. R. China.
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Zhuang
authors.affiliation: State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Micro-system and Information Technology, CAS, 865 Changning Road, Shanghai, 200050, P. R. China. liubo@mail.sim.ac.cn.
authors.forename: Bo
authors.initials: B
authors.lastname: Liu
authors.affiliation: Key Lab for Advanced Materials, Institute of Applied Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China.
authors.forename: Luxing
authors.initials: L
authors.lastname: Wang
authors.affiliation: Key Lab for Advanced Materials, Institute of Applied Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China.
authors.forename: Linfeng
authors.initials: L
authors.lastname: Gu
authors.affiliation: State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Micro-system and Information Technology, CAS, 865 Changning Road, Shanghai, 200050, P. R. China.
authors.forename: Sannian
authors.initials: S
authors.lastname: Song
authors.affiliation: Key Lab for Advanced Materials, Institute of Applied Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China.
authors.forename: Bin
authors.initials: B
authors.lastname: Zhang
authors.affiliation: Key Lab for Advanced Materials, Institute of Applied Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China. chentangyu@yahoo.com.
authors.forename: Yu
authors.initials: Y
authors.lastname: Chen
keywords: covalent modification; in situ polymerization; poly(aryleneethynylene); reduced graphene oxide; structural characterization