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Two Stage Colour Modulation of Triarylmethine Dyes Derived from a Photochromic Naphthopyran

Gabbutt, Christopher D., Heron, B. Mark, Kolla, Suresh B. and Mcgivern, Matthew (2008) Two Stage Colour Modulation of Triarylmethine Dyes Derived from a Photochromic Naphthopyran. European Journal of Organic Chemistry, 2008 (12). pp. 2031-2034. ISSN 1434-193X

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Abstract

The synthesis of the unsymmetrical triarylmethine dyes 4derived from a lithiated naphthopyran and diaryl ketones is reported. In toluene solution 4 display a typical reversible photochromic response becoming coloured upon irradiation with UV light and fading upon cessation of irradiation. At low pH an intensely coloured dye cation is generated and UV irradiation of this solution results in a further colour change as a consequence of photochromic cycling of the naphthopyran unit

Item Type: Article
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Schools: School of Applied Sciences
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Depositing User: Sharon Beastall
Date Deposited: 18 Sep 2012 11:20
Last Modified: 18 Oct 2012 09:43
URI: http://eprints.hud.ac.uk/id/eprint/14926

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