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. 2009 Apr 16;11(8):1769-72.
doi: 10.1021/ol900288j.

Design and synthesis of an o-hydroxyphenyl-containing spiropyran thermochromic colorant

Jhih-Rong Chen  1 , Ding-Yah Yang
Affiliations

Design and synthesis of an o-hydroxyphenyl-containing spiropyran thermochromic colorant

Jhih-Rong Chen et al. Org Lett. .

Abstract

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.

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