Why does a para-amino group make the green fluorescent protein chromophore non-fluorescent: coherent intramolecular charge transfer reduces the Z/E-photoisomerization barrier. Issue 61 (10th July 2019)

• Record Type: Journal Article
• Authors: Chen, Yi-Hui; Sung, Robert; Sung, Kuangsen
• Is Part Of: Chemical communications. Volume 55:Issue 61(2019)
• Page Start: 8991
• Page End: 8994
• Publication Date: 2019-07-10
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c9cc04156g
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : The p -NH2 group makes the green fluorescent protein chromophore non-fluorescent because coherent photo-induced intramolecular charge transfer reduces the Z / E -photoisomerization barrier. Abstract : A para-N -phenyl-amino group significantly increases the fluorescence quantum yield of N -phenyl-4-aminostilbene by the "amino conjugation effect", but, in contrast, a para -amino group in the para -amino analogue ( p -ABDI) of the green fluorescent protein (GFP) chromophore makes p -ABDI non-fluorescent because the coherent photo-induced intramolecular charge transfer reduces the barrier of the Z / E -photoisomerization.