The third order nonlinear optical properties of graphene oxide-zinc (II) naphthalocyanine hybrids and amino graphene oxide-zinc (II) naphthalocyanine hybrids

被引：23
作者：
Zhao, Cheng [1 ]
He, Chunying [1 ]
Dong, Yongli [2 ]
Song, Weina [2 ]
机构：
[1] Heilongjiang Univ, Sch Chem & Mat Sci, Key Lab Funct Inorgan Mat Chem, Minist Educ, Harbin 150080, Heilongjiang, Peoples R China
[2] Heilongjiang Univ Sci & Technol, Coll Environm & Chem Engn, Harbin 150022, Heilongjiang, Peoples R China
来源：
CARBON | 2019年 / 145卷
基金：
中国国家自然科学基金; 黑龙江省自然科学基金;
关键词：
DESIGN STRATEGY; PHTHALOCYANINE; NANOPARTICLES; SUBSTITUENTS; REDUCTION; METAL;
D O I：
10.1016/j.carbon.2018.12.017
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Novel tetracarboxylic zinc naphthalocyanine-graphene oxide (ZnNcC(4)-GO) and tetracarboxylic zinc naphthalocyanine-amino graphene oxide (ZnNcC(4)-NGO) hybrids have been prepared with a covalent functionalization method. A series of characterizations have been used to prove the structures of ZnNcC(4)-GO and ZnNcC(4)-NGO hybrids. The third order nonlinear optical properties were investigated using the Z-scan technique at 532 nm with 4 ns laser pulses. Either ZnNcC(4)-GO or ZnNcC(4)-NGO exhibited much larger nonlinear optical absorption coefficients than GO and ZnNcC(4) as a result of the covalent link between GO and ZnNcC(4). ZnNcC(4)-NGO hybrids perform the enhanced NLO properties than ZnNcC(4)-GO, attributed to the increased excited state absorption from the extended sp(2) carbon configurations of the NGO moiety in ZnNcC(4)-NGO hybrids along with the partial reduction of NGO nanosheets, and the stronger PET/ET process between NGO and ZnNcC(4). Moreover, the Z-scan curve of ZnNcC(4)-NGO shows a deeper RSA valley and the larger beta value compared to that of ZnPcC4-NGO because the pi-conjugated system of ZnNcC(4) is larger relative to that of ZnPcC4. (c) 2019 Elsevier Ltd. All rights reserved.
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页码：640 / 649
页数：10
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