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Open AccessArticle

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

Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat de València-Universidad Politécnica de Valencia, Dr. Moliner, 50, 46100-Burjassot, Valencia, Spain
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Academic Editors: Scott Reed and Marino Resendiz
Molecules 2015, 20(11), 20688-20698; https://doi.org/10.3390/molecules201119724
Received: 7 September 2015 / Revised: 30 October 2015 / Accepted: 10 November 2015 / Published: 19 November 2015
(This article belongs to the Special Issue Photoactive Molecules)
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 (ET(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). View Full-Text
Keywords: triarylmethane dyes; crystal structure; solvatochromic studies triarylmethane dyes; crystal structure; solvatochromic studies
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Chulvi, K.; Costero, A.M.; Ochando, L.E.; Gil, S.; Vivancos, J.-L.; Gaviña, P. Solvatochromic and Single Crystal Studies of Two Neutral Triarylmethane Dyes with a Quinone Methide Structure. Molecules 2015, 20, 20688-20698.

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