Hill, R.R.; Moore, S.A. and Roberts, D.R.
Photochromic behaviour of N-arylsulfonyl peptides.
Journal of Chemical Research(8) pp. 511–513.
Deep, persistent, but structurally sensitive photoyellowing observed in photochemical studies of a wide range of arylsulfonyl derivatives of amines, amino acids and peptides can be attributed to a novel kind of photochromism in which intramolecular photoinduced electron transfer promotes the formation of a metastable cyanine-type chromophore involving sulfur d-orbitals.
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