Dramatic femtosecond nonlinear absorption at a strongly coupled porphyrin-graphene nanoconjugate

作     者：Lulu Fu Yan Fang Zihao Guan Zhiyuan Wei Rui Yang Naying Shan Fang Liu Yang Zhao Mingfei Zhang Zhipeng Huang Mark GHumphrey Chi Zhang Lulu Fu;Yan Fang;Zihao Guan;Zhiyuan Wei;Rui Yang;Naying Shan;Fang Liu;Yang Zhao;Mingfei Zhang;Zhipeng Huang;Mark G.Humphrey;Chi Zhang

作者机构：China-Australia Joint Research Center for Functional Molecular MaterialsSchool of Chemical Science and EngineeringTongji UniversityShanghai 200092China United World CollegeChangshu 215500China Research School of ChemistryAustralian National UniversityCanberraACT 2601Australia 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2023年第16卷第4期

页      面：5900-5908页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：the National Natural Science Foundation of China(No.51432006) the Ministry of Science and Technology of China for the International Science Linkages Program(No.2011DFG52970) the Ministry of Education of China for the Changjiang Innovation Research Team(No.IRT14R23) the Ministry of Education and the State Administration of Foreign Experts Affairs for the 111 Project(No.B13025) the Innovation Program of Shanghai Municipal Education Commission are gratefully acknowledged.M.G.H thanks the Australian Research Council(No.DP170100411)for support 

主　　题：graphene oxide porphyrin nanoconjugate femtosecond nonlinear optics 

摘      要：Edge-functionalization of graphene is emerging as a powerful chemical method for the construction ofπ-delocalized highlyplanar graphene nanoconjugates that are not accessible through surface-supported ***,a graphene-porphyrin nanoconjugate via a robust pyrazine(pz)linkage has been obtained by condensing 2,3-diamino-5,10,15,20-tetraphenylporphyrin(DA-TPP)with ortho-quinone(o-quinone)moieties at edge sites of graphene oxide(GO).The as-prepared GO-pz-TPP exhibits an intense absorption extending from 375 to 900 nm and a high quenching yield(98%)of fluorescence,indicating a strong electronic coupling effect between GO and TPP ***-pz-TPP displays strong nonlinear optical(NLO)absorption and giant NLO coefficients with 800 and 1,030 nm fs laser,in sharp contrast to traditional graphene-porphyrin nanohybrids only NLO-active towards ns *** a dramatic NLO performance towards femtosecond pulsed laser has not been achieved in any carbonchromophores nanohybridized materials to *** work validates theπ-extended edge-functionalization strategy as a means to tune the NLO properties of graphene,thereby providing a new paradigm for the assembly of versatile optoelectronic materials.