title: Room temperature photochromic liquid crystal [3H]-naphtho[2,1-b]pyrans-photochromism in the mesomorphic state.
abstract: Photochromic liquid crystals based on [2H]-chromenes functionalised in the 3,3[prime or minute]-positions by phenyl groups linked to 4-cyano-4[prime or minute]-hydroxybiphenyl groups via alkyl and siloxane spacers as chromophore were synthesised and the photochromic and mesomorphic behaviour was investigated.
authors.affiliation: Department of Chemistry, University of Hull, Hull, UKHU6 7RX.
authors.forename: Michel
authors.initials: M
authors.lastname: Frigoli
authors.forename: Georg H
authors.initials: GH
authors.lastname: Mehl