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New Dendritic Polydiacetylene Sensor with Good Reversible Thermochromic Ability in Aqueous Solution and Solid Film
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posted on 2017-03-15, 00:00 authored by Wenjie Dong, Guanhua Lin, Haifei Wang, Wensheng LuThermal
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.