Reactivity-gated photochromism of 1,2-dithienylethenes for potential use in dosimetry applications.
[reaction: see text] A novel molecular switching system based on reactivity-gated photochromism operates because a butadiene undergoes a [4 + 2] cycloaddition reaction with a dienophile to produce the photoresponsive 1,2-dithienylethene backbone. The reversible change in color when samples are irradiated with appropriate wavelengths of light occurs only after the Diels-Alder cycloaddition reaction takes place.
Department of Chemistry, Simon Fraser University, Burnaby, BC, Canada.
Vincent
V
Lemieux
Neil R
NR
Branda
D001643:Bridged Bicyclo Compounds / Q000138:chemical synthesis* / Q000737:chemistry*; D002070:Butadienes / Q000737:chemistry*; D003124:Colorimetry; D003500:Cyclization; D015394:Molecular Structure; D010777:Photochemistry; D013876:Thiophenes / Q000138:chemical synthesis* / Q000737:chemistry*
D001643:Bridged Bicyclo Compounds; D002070:Butadienes; D013876:Thiophenes