具有聚集诱导发光及机械变色特性的含Au(I)化合物的设计、合成及性质研究
收稿日期: 2014-12-03
修回日期: 2015-01-13
网络出版日期: 2015-01-23
基金资助
国家自然科学基金(Nos. 20931006, 21072070, 21072071, 21272088)和武汉市学科带头人计划(No. 201271130441)资助项目.
Design, Synthesis and Characterization of Gold(I) Compounds with Aggregation-Induced Emission and Reversible Mechanochromism Characteristics
Received date: 2014-12-03
Revised date: 2015-01-13
Online published: 2015-01-23
Supported by
Project supported by the National Natural Science Foundation of China (Nos. 20931006, 21072070, 21072071, 21272088) and the Program for Academic Leader in Wuhan Municipality (No. 201271130441).
设计合成了两个含Au(I)的化合物1和2, 利用核磁共振(NMR)、红外光谱(IR)、元素分析等对其结构进行了表征. 通过对其在二甲亚砜(DMSO)/水体系或N,N-二甲基甲酰胺(DMF)/水体系中荧光光谱的研究, 显示其在纯有机溶剂中没有荧光, 而在混合体系中, 水含量达到一定程度后, 其荧光会显著增强. 这表明化合物1和2均具有明显的聚集诱导发光性质. 对化合物1和2的固体粉末进行研磨, 其固体荧光会显著增强, 而且将研磨后的样品暴露在有机溶剂蒸汽中一段时间后, 荧光强度又会恢复到原来的强度. 这表明化合物1和2均具有机械变色的性质. 通过它们的X射线粉末衍射(XRD)测试发现, 这两个化合物在研磨前后分子堆积态实现了从晶态到无定形态的转变. 因此这两个化合物具有成为新型智能材料的潜质.
宋敏 , 陈钊 , 余广鳌 , 尹军 , 刘盛华 . 具有聚集诱导发光及机械变色特性的含Au(I)化合物的设计、合成及性质研究[J]. 有机化学, 2015 , 35(3) : 681 -687 . DOI: 10.6023/cjoc201412008
Two gold (I) complexes 1 and 2 were designed, synthesized and structurally characterized by NMR, IR as well as elemental analysis. Fluorescence studies show that the two compounds exhibit very weak photoluminescence in pure organic solvents (dimethylsulfoxide or N,N-dimethyl formamide), enhanced fluorescences are observed after the addition of water, which indicate that the aggregation-induced emission (AIE) characteristics of these complexes. The solid-state fluorescence of complexes 1 and 2 can be significantly increased by grinding the solid samples. The recovery of the fluorescence intensity of these ground powders was detected after exposure the samples to organic solvent vapors. This phenomenon suggested the reversible mechanochromism behaviors of comounds 1 and 2. The powder X-ray diffracton (XRD) results displayed the morphology transition between the crystalline and amorphous states before and after the grinding of the sample. The AIE and reversible mechanochromism characteristics of complexes 1 and 2 made them can be potentially used for "smart" materials.
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