Strong optical nonlinearities of self-assembled polymorphic microstructures of phenylethynyl functionalized fluorenones  

作　　者：Xinyue Li Sergey Semin Leandro A. Estrada Chunqing Yuan Yulong Duan Jonathan Cremers Paul Tinnemans Paul Kouwer Alan E. Rowan Theo Rasing Jialiang Xu 

机构地区：[1]School of Chemical and Engineering Technology, Tianjin University, Tianjin 300350, China [2]Institute for Molecules and Materials (IMM), Radboud University, 6525 A J, Nijrnegen, The Netherlands [3]Center for Photochemical Sciences, Bowling Green State University, Bowling Green OH 43403, USA [4]Solvay Specialty Polymers, Alpharetta CA 30005, USA [5]Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane OLD 4072, Australia

出　　处：《Chinese Chemical Letters》2018年第2期297-300,共4页中国化学快报（英文版）

基　　金：the financial supports from the National Natural Science Foundation of China(NSFC) (Nos.21773168, 51503143 and 21761132007);the Tianjin Natural Science Foundation(No. 16JCQNJC05000);the Innovation Foundation of Tianjin University (No. 2016XRX-0017);the China International Science and Technology Projects(No. S2016G3413);The Netherlands Organization for Scientific Research (NWO) with the Veni Grant (No. 680-47-437);The Royal Netherlands Academy of Arts and Sciences(KNAW) with the China-Exchange Program (No. 530-4CDPO2);the Tianjin 1000 Youth Talents Plan;the Chinese Scholarship Council (CSC)

摘　　要：Highly efficient nonlinear optical（NLO） materials with well-defined architectures in the wavelength and subwavelength length scales are of particular importance for next generation of integrated photonic circuits. Fluorenone analogues have been demonstrated to be promising candidates as building blocks for assembly of organic NLO materials thanks to their synergistic supramolecular interactions and brilliant optical properties. Here we have studied the polymorphs of a phenylethynyl functionalized fluorenone derivative, and their controlled self-assembly for microstructures with different morphologies. These polymorphic microcrystals exhibit very distinctive NLO properties, highly related to their supramolecular and electronic structures.Highly efficient nonlinear optical（NLO） materials with well-defined architectures in the wavelength and subwavelength length scales are of particular importance for next generation of integrated photonic circuits. Fluorenone analogues have been demonstrated to be promising candidates as building blocks for assembly of organic NLO materials thanks to their synergistic supramolecular interactions and brilliant optical properties. Here we have studied the polymorphs of a phenylethynyl functionalized fluorenone derivative, and their controlled self-assembly for microstructures with different morphologies. These polymorphic microcrystals exhibit very distinctive NLO properties, highly related to their supramolecular and electronic structures.

关 键 词：Nonlinear optics Second harmonic generation Two-photon excited fluorescence Transition dipole Fluorenone 

分 类 号：O621.22[理学—有机化学]