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Novel Chromogenic Polymer Gel Networks for Hybrid Transparency and Color Control with Temperature
Author(s) -
Seeboth A.,
Kriwanek J.,
Vetter R.
Publication year - 2000
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/1521-4095(200010)12:19<1424::aid-adma1424>3.0.co;2-n
Subject(s) - bromothymol blue , materials science , thermochromism , transparency (behavior) , chromogenic , polymer , aqueous solution , chemical engineering , optics , composite material , organic chemistry , physics , engineering , political science , law , chemistry
Control over both color and transparency is reported for the thermochromic materials presented here. Dyes such as Bromothymol Blue (BB) can reversibly change color with temperature when embedded in aqueous polyether/LiCl gel networks. The Figure shows a gel containing BB at room temperature (green, transparent) and at 33 °C (yellow, transparent). At 36 °C the gel becomes milky.