Design and synthesis of an o-hydroxyphenyl-containing spiropyran thermochromic colorant.
An o-hydroxyphenyl-containing spiropyran thermochromic colorant was designed and synthesized. The prepared compound is sensitive to temperature and has a reversible color change with temperature variation. X-ray diffraction analysis and variable-temperature NMR studies suggest that the thermochromism of the compound presumably involved a ring-opening C-O bond cleavage of the spiropyran moiety followed by an intramolecular hydrogen transfer.
Department of Chemistry, Tunghai University, 181, Taichung-Kang Road Sec. 3, Taichung, Taiwan.
Jhih-Rong
JR
Chen
Ding-Yah
DY
Yang