Thermochromic polymer materials was written by Seeboth, Arno;Ruhmann, Ralf;Loetzsch, Detlef. And the article was included in PMSE Preprints in 2006.Formula: C26H29N3O2 This article mentions the following:
Polymers with chromogenic behavior changing their visible optical properties in response to an external stimulus have met growing interest in the last decade. According to the external stimulus which affects the optical properties, these materials are separated into different types. This work focuses on the development and characterization of thermochromic polymer materials. Thermochromic materials variegate their color, color intensity or transparency in response to temperature changes. The thermochromic behavior of (i) hydrogels endowed with indicator dyes and (ii) polyolefins with embedded leuco dye systems are presented. The change of transparency and color in prepared hydrogels result on phase transitions and a specific interaction between dye and the microenvironment of the polymer network resp. The investigation of thermochromic polyolefins include the concentration and temperature dependence of the UV-vis spectra as well as the determination of the surface tension g by contact angle measurements. In the experiment, the researchers used many compounds, for example, Crystal violet lactone (cas: 1552-42-7Formula: C26H29N3O2).
Crystal violet lactone (cas: 1552-42-7) belongs to benzofurans derivatives. Benzofuran is a core structural unit found in many naturally occurring compounds with multidirectional biological activities. Introduction of benzofurans in organic synthesis, particularly drug synthesis, involves generally the use of their metalated species as nucleophiles in addition reactions or in metal-catalysed cross-coupling reactions.Formula: C26H29N3O2
Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem