Some novel amino-substituted spiroindolinonaphthopyrans have been synthesised. Whilst these compounds exhibit no observable photochromic properties at ambient temperature, protonation results in ring opening to given stable, intensely coloured dyes. Recyclisation and decolouration result on basification.
|Number of pages||6|
|Journal||Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals|
|Publication status||Published - 1 Dec 2000|
|Event||3rd International Symposium on Organic Photochromism - Fukuoka, Japan|
Duration: 14 Nov 1999 → 18 Nov 1999
Conference number: 3