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Synthesis and photochromic properties of symmetrical aryl ether linked bi- and tri-naphthopyrans

Gabbutt, Christopher D., Heron, B. Mark, Instone, Alicia C., Kolla, Suresh B., Mahajan, Kunal, Coelho, Paulo J. and Carvalho, Luis M. (2008) Synthesis and photochromic properties of symmetrical aryl ether linked bi- and tri-naphthopyrans. Dyes and Pigments, 76 (1). pp. 24-34. ISSN 0143-7208

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Abstract

A range of aryl ether linked benzophenones (8) has been conveniently obtained by nucleophilic displacement of fluoride from 4-fluorobenzophenone with a dihydroxy-benzene or -naphthalene. The linked benzophenones were efficiently transformed in two steps to symmetrically linked naphthopyrans (10d–k). The photochromic response of these novel systems under steady state irradiation is characterised by a two stage fading process and their colourability is only marginally improved over the related monomeric analogues (10a–c).

Item Type: Article
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Q Science > QH Natural history > QH301 Biology
Schools: School of Applied Sciences
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Depositing User: Sharon Beastall
Date Deposited: 18 Sep 2012 11:04
Last Modified: 18 Oct 2012 09:43
URI: http://eprints.hud.ac.uk/id/eprint/14925

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