New Dendritic Polydiacetylene Sensor with Good Reversible Thermochromic Ability in Aqueous Solution and Solid Film
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Published on: October 31, 2019
Wenjie Dong1, Guanhua Lin1, Haifei Wang1
1Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Surface Science, Institute of Chemistry, Chinese Academy of Science , Beijing 100190, P. R. China.
Abstract:
Thermal responsive polydiacetylene derived from PAMAM dendrimer (PDA-G0) was synthesized. Unlike the ethylenediamine substituted PDA (PDA-NH2) solution, the prepared PDA-G0 vesicle solution showed reversible thermochromism property when temperature varied from 20 to 90 °C, which is due to the formation of an internal hydrogen bond in amide groups. Furthermore, PDA-G0/PMMA film with excellent stability was obtained by a mixed-drying method, which could be stored for a long time without denaturation. After polymerization by UV irradiation, it displayed much better reversible thermochromic ability and the responded temperature range became wider, from 20 to 110 °C.
