TY - JOUR
T1 - Fullerene grafted graphene oxide with effective charge transfer interactions
AU - Kumar, Rachana
AU - Khan, Saba
AU - Gupta, Neha
AU - Naqvi, Samya
AU - Gaurav, Kumar
AU - Sharma, Chhavi
AU - Kumar, Mahesh
AU - Kumar, Pramod
AU - Chand, Suresh
N1 - Publisher Copyright:
© 2016 Elsevier Ltd
PY - 2016/10/1
Y1 - 2016/10/1
N2 - We have covalently grafted fullerene molecules to graphene oxide using hydrolyzed PCBM as fullerene precursor via very mild process without the use of metal catalysts and comprehensively studied the charge transfer interactions in ground and excited state. For the evidence of covalent grafting of fullerene on graphene oxide sheets different spectroscopic studies have been performed like, FTIR, Raman spectroscopy, UV–vis absorption, cyclic voltammetry, XRD and XPS. Amount of loading of fullerene on graphene oxide is calculated by thermogravimetric analysis and morphological study was performed by AFM and TEM. Covalently attached fullerene molecules act as excellent electron acceptor for ultrafast electron transfer from graphene oxide sheets and established by photoluminescence and ultrafast pump-probe transient absorption (TA) spectroscopy. From the TA measurements, we reveal ultrafast charge separation and long lived charge separated species formation in fullerene functionalized graphene oxide.
AB - We have covalently grafted fullerene molecules to graphene oxide using hydrolyzed PCBM as fullerene precursor via very mild process without the use of metal catalysts and comprehensively studied the charge transfer interactions in ground and excited state. For the evidence of covalent grafting of fullerene on graphene oxide sheets different spectroscopic studies have been performed like, FTIR, Raman spectroscopy, UV–vis absorption, cyclic voltammetry, XRD and XPS. Amount of loading of fullerene on graphene oxide is calculated by thermogravimetric analysis and morphological study was performed by AFM and TEM. Covalently attached fullerene molecules act as excellent electron acceptor for ultrafast electron transfer from graphene oxide sheets and established by photoluminescence and ultrafast pump-probe transient absorption (TA) spectroscopy. From the TA measurements, we reveal ultrafast charge separation and long lived charge separated species formation in fullerene functionalized graphene oxide.
UR - http://www.scopus.com/inward/record.url?scp=84976578536&partnerID=8YFLogxK
U2 - 10.1016/j.carbon.2016.06.034
DO - 10.1016/j.carbon.2016.06.034
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AN - SCOPUS:84976578536
SN - 0008-6223
VL - 107
SP - 765
EP - 773
JO - Carbon
JF - Carbon
ER -