Novel triarylmethane dyes decorated with 2-thienyl, 2-thieno[3,2-b]thienyl, and 2-dithieno[3,2-b:2′,3′-d]thienyl rings as auxochromes were much more bathochromic than the known crystal violet. The hydrol precursors of these new dyes exhibited potential applications as strong and super acid pH sensors.
![Graphical abstract: Application of novel triarylmethane dyes having thienyl, thieno[3,2-b]thienyl, and dithieno[3,2-b:2′,3′-d]thienyl rings as auxochromes to super acid pH sensors](/en/Image/Get?imageInfo.ImageType=GA&imageInfo.ImageIdentifier.ManuscriptID=C6RA00915H&imageInfo.ImageIdentifier.Year=2016)
M. Matsui, K. Kakitani, Y. Kubota, K. Funabiki and M. Ishida, RSC Adv., 2016, 6, 16759 DOI: 10.1039/C6RA00915H
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