Journal
LANGMUIR
Volume 33, Issue 23, Pages 5910-5914Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.7b01221
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Funding
- Shenzhen government
- Southern University of Science and Technology
- Thousand Young Talents Program
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Thermochromic composites constitute a classical subfamily of stimuli responsive materials. We report here the thermochromic effect in Pluronic F-127 (F127) micelles containing hydrophobic ion-exchanger and H+ chromoionophores. The highly versatile and reversible thermochromism is attributed to the temperature-induced hydration dehydration of the peripheral layer of the micelles, which in turn controls the ion-exchange process between the core and the periphery of the micelles. The color typically changes abruptly within 35 degrees C, and the color transition temperature can be tuned within 5-25 degrees C upon varying the F127 concentrations. This work lays the foundation of a new variety of thermochromic materials involving ion-exchange.
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