Thermoresponsive Dendronized Polymeric Sensors
Thermoresponsive Dendronized Polymeric Sensors
复制标题
热响应树枝状聚合物传感器
DOI：
10.1002/pola.27171
复制
发表时间：
2014-06-15
影响因子：
--
通讯作者：
Zhang, Afang
中科院分区：
文献类型：
--
作者：
Liu, Lianxiao;Li, Wen;Zhang, Afang
合成了第一代（G1）和第二代（G2）树枝状溶剂化变色染料共聚物，并研究了它们的温敏性能。这些共聚物是由基于低聚乙二醇（OEG）的树枝状分子构成的，以提供热响应性，分散红1作为染料探针。通过改变G1到G2的树枝化生成，以及G2聚合物的内部结构从亲水性OEG到疏水性烷基链，研究了可能的结构和结构对传感的影响。用UV/维斯光谱法研究了这些共聚物对温度和溶液pH的敏感能力。结合荧光光谱的支持，显着的树枝化聚合物的厚度效应被发现在热诱导聚集过程中的染料部分的转变。这项工作丰富了温敏比色聚合物传感器的领域，并提供了一个深入的了解染料探针在这些庞大的树枝化聚合物的热诱导相变过程中的状态变化。(c)2014年威利期刊公司J.波利姆科学，部分A：聚合物。2014，52，1706 - 1713
The first (G1) and second generation (G2) of dendronized copolymers carrying solvatochromic dyes were synthesized, and their thermoresponsive properties investigated. These copolymers were constituted with oligoethylene glycol (OEG)-based dendrons to afford the thermoresponsiveness and disperse red 1 to act as the dye probe. The possible architecture and structure effects on sensoring were investigated by changing dendron generation from G1 to G2, and the interior structures of G2 polymers from hydrophilic OEG into hydrophobic alkyl chain. The sensoring ability of these copolymers to temperature and solution pH was examined with UV/Vis spectroscopy. Combined with the supports from fluorescence spectroscopy, remarkable thickness effects of dendronized polymers were discovered on the transitions of the dye moieties during the thermally-induced aggregation process. This work enriches the field of thermoresponsive colorimetric polymeric sensors, and provides an in-depth understanding of state changes of the dye probe during the thermally-induced phase transitions within these bulky dendronized polymers. (c) 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2014, 52, 1706-1713