于广水1, 刘威1, 牛洪波2, 薛善锋1, 杨文君1*
(1.青岛科技大学橡塑材料与工程教育部重点实验室;山东省橡塑材料与工程重点实验室;
高分子科学与工程学院,山东 青岛 266042; 2.烟台职业学院 食品系,山东 烟台 264670)
摘要: 通过4烷氧基苯甲醛和9,10二磷脂基蒽的Witting反应合成了一系列可溶性的9,10二(对烷氧基苯乙烯基)蒽(DSAOCn)(n=1~10,12,14,16)衍生物。溶液的紫外吸收和荧光发射光谱随着末端烷基链长的改变没有发生明显的变化,但是其在V(THF)/V(水)=1/9混合溶液中的荧光发射光谱出现了较大的差异。当DSAOCn系列衍生物的末端烷基链长度较长(n≥7)时它们的荧光光谱峰值在550 nm左右,而末端烷基链较短(n≤6)化合物的荧光光谱峰值出现在500 nm左右。此外,具有较长末端烷基链的化合物其溶液荧光量子效率(Φ)较低。结果表明,改变末端烷基链的长度可以有效地调控化合物的聚集行为和光学性质。
关键词: 聚集诱导荧光; Witting反应; 链长依赖性; 蒽中心
中图分类号: O 644 文献标志码: A
Chain Lengthdependent AIE Behaviour of 9,10Bis (palkoxystyryl)anthracenes
YU Guangshui1, LIU Wei1, NIU Hongbo2, XUE Shanfeng1, YANG Wenjun1
(1.Key Laboratory of RubberPlastics,Ministry of Education; Shandong Provincial Key Laboratory of RubberPlastics;
College of Polymer Science and Technology, Qingdao University of Science and Technology, Qingdao 266042,China;
2.Department of Food, Yantai Vocational College, Yantai 264670,China)
Abstract: 9,10Bis(palkoxystyryl)anthracenes (DSAOCn) with various length of alkyl chains (n=1-10,12,14,16,18) are synthesized and the chain lengthdependent AggregationInduced Emission (AIE) behaviours are systematically investigated. The absorption (UV) and emission (PL) spectra of DSAOCn in solution has no obvious changes with the change of the terminal alkyl chain, but the emission spectra of DSAOCn in aqueous media (V(THF)/V(water)=1/9) appear larger difference. When DSAOCn derivatives with the longer alkyl chain length (n≥7) the emission spectra peak at around 550 nm, and with the shorter alkyl chain (n≤6) at the end of the compound of the fluorescence spectrum peaks appear bigger difference (about 500 nm). In addition, when DSAOCn derivatives with the longer alkyl chain length in solution has a low fluorescence quantum efficiency (Φ). It indicates that the length of the alkyl chain can control their AggregationInduced Emission (AIE) behaviours and optical properties.
Key words: AIE; Witting reaction; chain lengthdependent; anthracenecentered
收稿日期: 20131025
基金项目: 国家自然科学基金项目(51173092;51073083);青岛市科技发展计划青年专项基金项目(1314207jch);青岛科技大学引进人才启动基金项目(0022541).
作者简介: 于广水(1977—),男,讲师. *通信联系人.