Thermochromic systems based on complexes of some triarylmethane dyes was written by Raditoiu, Valentin;Raditoiu, Alina;Wagner, Luminita;Amariutei, Viorica;Nicolae, Cristian Andi. And the article was included in Revista de Chimie (Bucharest, Romania) in 2013.Name: Crystal violet lactone This article mentions the following:
The paper presents some triarylmethane dyes and their use in thermochromic systems of donor-accepting type. Compounds are characterized by FT-IR spectra, UV-Vis reflectance spectra and color measurements in CIELAB system and thermal anal. Some considerations are made in relationship with dyestuff structure, developing agent and solvents used to obtain thermochromic systems. The effect of the ratio between the developing agent and lactone dye on the color differences was studied from reflectance spectra and color measurements while the influence of the solvent type on the transition temperature was analyzed using dynamic scanning calorimetry. In the experiment, the researchers used many compounds, for example, Crystal violet lactone (cas: 1552-42-7Name: Crystal violet lactone).
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. They are also prone to polymerisation in the presence of concentrated mineral acids and Lewis acids.Name: Crystal violet lactone
Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem