Responsiveness and Morphology Study of Dual Stimuli‐Controlled Supramolecular Polymer,Macromolecular Rapid Communications

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Responsiveness and Morphology Study of Dual Stimuli‐Controlled Supramolecular Polymer
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2017-08-16 , DOI: 10.1002/marc.201700358
Chenxiao Xiong ₁ , Meiran Xie ₁ , Ruyi Sun ₁

Affiliation

The synthesis and characterization of a linear supramolecular polymer formed by dual host–guest recognitions is presented. The polymer linked by the orthogonal interactions of azobenzene with β‐cyclodextrin and methyl viologen with sulfonatocalix[4]arene is constructed, and the morphology change along with the formation and vanishment of host–guest interaction is investigated. The reversible disassembly–reassembly of the polymer induced by light and the redox process are monitored by UV–vis and cyclic voltammetry, respectively. The interesting morphology differences between the monomer guest (G), supramolecular polymer (P), and light dissembled product pseudorotaxane (D1) are observed and analyzed. G conducts self‐assembly into a short rod with average width of 83 nm due to the molecular amphipathy and π–π interaction between naphthalene nucleuses, while P exhibits 20 nm wide line morphology. Irradiating P with 365 nm light, the corresponding aggregation D1 shows as 35 nm wide short rod.

中文翻译：

双重刺激控制的超分子聚合物的响应性和形态学研究

介绍了由双重客体识别形成的线性超分子聚合物的合成和表征。通过偶氮苯与β-环糊精和甲基紫精与磺基杯[4]芳烃的正交相互作用连接的聚合物，研究了形态变化以及主体-客体相互作用的形成和消失。由光和氧化还原过程引起的聚合物的可逆拆卸-重新组装分别通过紫外可见和循环伏安法进行监测。观察并分析了单体客体（G），超分子聚合物（P）和光分解产物假轮烷（D1）之间有趣的形态差异。G由于分子两亲性和萘核之间的π–π相互作用，分子自组装成平均宽度为83 nm的短杆，而P表现出宽20 nm的线形。用365 nm的光照射P，相应的聚集D1显示为35 nm宽的短棒。

更新日期：2017-08-16

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