应用化学2017，Vol.34Issue(9)：1024-1034,11.DOI:10.11944/j.issn.1000-0518.2017.09.170160
紫精修饰多功能Eu(Ⅲ)配合物的荧光开关、非线性光学和光电活性
Multi-Functional Viologen-Based Eu(Ⅲ) Complex with Photoswitchable Luminescence, Nonlinear Optical Properties and Photovoltaic Activity
摘要
Abstract
The solvothermal reaction of a viologen-functionalized aromatic dicarboxylate ligand 1-(3,5-dicarboxybenzyl)-4,4′-bipyridinium nitrate(H2L+NO-3) with Eu(Ⅲ) leads to the formation of a new metal-organic complex {[Eu(μ2-OH)(L)(HCO2)]·H2O}n(1), in which the formate anions come from the in situ decomposition of solvent dimethylformamide(DMF).Single-crystal X-ray analysis revealed that complex 1 has chirality and diaplays a two-dimensional layer structure.Complex 1 manifests fast photoresponsive and reversibile photochromic properties.It gives an eye-detectable color change from pale-yellow to dark green upon exposure to light, and the coloring/fading processes can repeat several cycles.The structural analysis demonstrated that the electrons transfer from carboxylate donors to viologen acceptor as well as the ππ interaction offers reasonable electron-transfer pathways for the photochromic process.Interestingly, the synthesized solid-state chiral crystalline material not only exhibits tunable luminescence in response to light, but also shows photoswitching nonlinear optical(NLO) activity, and the second-harmonic generation(SHG) efficiency is approximately 3.8 times that of potassium dihydrogen phosphate(KDP) in the same particle size.Moreover, surface photovoltage spectroscopy(SPS) of complex 1 has been investigated and the result indicates it exhibits interesting photovoltaic activity.关键词
紫精/Eu(Ⅲ)配合物/荧光开关/非线性光学特性/光电活性Key words
multi-functional/viologen-based/Eu(Ⅲ) complex/photoswitchable luminescence/nonlinear optical properties/photovoltaic activity分类
化学化工引用本文复制引用
杜香莎,李海洋,刘恒,李根恒,李林科,臧双全..紫精修饰多功能Eu(Ⅲ)配合物的荧光开关、非线性光学和光电活性[J].应用化学,2017,34(9):1024-1034,11.基金项目
国家自然科学基金(21371153,20901070),河南省科技厅攻关项目(132102210411),河南省高等学校重点科研项目(16A150045)资助Supported by the National Natural Science Foundation of China(No.21371153, No.20901070), Program for Science & Key Scientific and Technological Project of Henan Province(No.132102210411), Key Scientific Research Project Plan in Colleges and Universities of Henan Province(No.16A150045) （21371153,20901070）
