Tunable photoluminescence and spectrum split from fluorinated to hydroxylated graphene

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	Tunable photoluminescence and spectrum split from fluorinated to hydroxylated graphene
	Gong PW(公培伟)1,2 ; Wang JQ(王金清)1 ; Sun WM(孙伟明)3; Wu D(吴迪)3; Wang ZF(王赵峰)1 ; Fan ZJ(范增杰)1,2; Wang HG(王宏刚)1 ; Han XX(韩修训)4 ; Yang SR(杨生荣)1
刊名	Nanoscale
	2014
卷号	6 期号:6 页码:3316-3324
ISSN号	2040-3364
通讯作者	王金清
英文摘要	Tunable control over the functionalization of graphene is significantly important to manipulate its structure and optoelectronic properties. Yet the chemical inertness of this noble carbon material poses a particular challenge for its decoration without forcing reaction conditions. Here, a mild, operationally simple and controllable protocol is developed to synthesize hydroxylated graphene (HOG) from fluorinated graphene (FG). We successfully demonstrate that under designed alkali environment, fluorine atoms on graphene framework are programmably replaced by hydroxyl groups via a straightforward substitution reaction pathway. Element constituent analyses confirm that homogeneous C-O bonds are successfully grafted on graphene. Rather different from graphene oxide, the photoluminescence (PL) emission spectrum of the obtained HOG becomes split when excited with UV radiation. More interestingly, such transformation from FG facilitates highly tunable PL emission ranging from greenish white (0.343, 0.392) to deep blue (0.156, 0.094). Additionally, both experimental data and density function theory calculation indicate that the chemical functionalization induced structural rearrangement is more important than the chemical decoration itself in tuning the PL emission band tail and splitting energy gaps. This work not only presents a new way to effectively fabricate graphene derivatives with tunable PL performance, but also provides an enlightening insight into the PL origin of graphene related materials.
学科主题	材料科学与物理化学
收录类别	SCI
资助信息	the National Natural Science Foundation of China (Grant no. 51375474;51075384;51205385);“Top Hundred Talents Program” of Chinese Academy of Sciences;the “Funds for Distinguished Young Scientists of Gansu Province”
语种	英语
WOS记录号	WOS:000332604200041
公开日期	2014-12-13
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/6971]
专题	兰州化学物理研究所_固体润滑国家重点实验室兰州化学物理研究所_先进润滑与防护材料研究发展中心兰州化学物理研究所_清洁能源化学与材料实验室
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100080, Peoples R China 3.Jilin Univ, State Key Lab Theoret & Computat Chem, Inst Theoret Chem, Changchun 130023, Peoples R China 4.Lanzhou Inst Chem Phys, Lab Clean Energy Chem & Mat, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Gong PW,Wang JQ,Sun WM,et al. Tunable photoluminescence and spectrum split from fluorinated to hydroxylated graphene[J]. Nanoscale,2014,6(6):3316-3324.
APA	Gong PW.,Wang JQ.,Sun WM.,Wu D.,Wang ZF.,...&Yang SR.(2014).Tunable photoluminescence and spectrum split from fluorinated to hydroxylated graphene.Nanoscale,6(6),3316-3324.
MLA	Gong PW,et al."Tunable photoluminescence and spectrum split from fluorinated to hydroxylated graphene".Nanoscale 6.6(2014):3316-3324.