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Near‐Infrared Thermochromic Diazapentalene Dyes
Author(s) -
Qian Gang,
Wang Zhi Yuan
Publication year - 2012
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/adma.201104711
Subject(s) - thermochromism , materials science , infrared , protonation , optoelectronics , absorption (acoustics) , near infrared spectroscopy , photochemistry , nanotechnology , optics , organic chemistry , chemistry , composite material , ion , physics
A series of 2,5‐diazapentalene containing dyes with tunable energy gaps are visible and near‐infrared halochromic towards various acids and their protonated counterparts represent a new class of thermochromic materials with the near‐infrared absorption being switched on at room temperature and off above 50 °C.