Solvatochromic and Single Crystal Studies of Two Neutral Triarylmethane Dyes with a Quinone Methide Structure

Molecules

Katherine Chulvi²  Ana M. Costero¹  Luis E. Ochando²  Salvador Gil²  José-Luis Vivancos²  Pablo Gaviña¹  Scott Reed² 

[1] Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat de València-Universidad Politécnica de Valencia, Dr. Moliner, 50, 46100-Burjassot, Valencia, Spain

关键词: triarylmethane dyes;    crystal structure;    solvatochromic studies;   

DOI  :  10.3390/molecules201119724

来源: mdpi

【 摘 要 】

The crystal structure of two neutral triarylmethane dyes with a p-quinone methide core was determined by X-ray diffraction analysis. The spectroscopic characteristics of both compounds in 23 solvents with different polarities or hydrogen-bonding donor (HBD) abilities has been studied as a function of three solvatochromic parameters (E_T(30), π* and α). Both compounds 1 and 2 showed a pronounced bathochromic shift of the main absorption band on increasing solvent polarity and HBD ability. The correlation is better for compound 2 than for compound 1. The stronger effect and better correlation was observed for compound 2 with the increment of the solvent HBD ability (α parameter).

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.