X‐ray crystallography shows that all of the acyclic DBAs adopt a planar trans–transoid–trans configuration. The maximum UV/Vis absorption wavelength is found to vary consistently with the overall π‐conjugation extent and, more intriguingly, with the π‐donor character of the aryl X substituents, which varies consistently with the first (reversible) reduction potential and first (irreversible) oxidation
Stable dichromic carbo-cyclohexadiene chromophores are synthesised, selectively with respect to the corresponding carbo-benzenes, by fluorine “chemical locking”.
通过氟“化学锁定”,选择性地合成稳定的二色性碳-环己二烯色团,相对于相应的碳-苯。
Film photoconducteur formé d'un polymère de silane greffé, procédé de préparation, procédé de formation d'une image électrostatique mettant en oeuvre un tel film et valve optique comportant un tel film