Dergi makalesi Açık Erişim
Klymchenko, AS; Pivovarenko, VG; Demchenko, AP
In order to understand the unexpectedly low quantum yields of 3-hydroxyflavones (3-HFs) in certain solvents, such as acetonitrile or ethyl acetate, the comparative study of solvent-dependent properties of parent 3-HF, 2-furyl-3-hydroxychromone and 2-benzofuryl-3-hydroxychromone derivatives have been pin-formed. The results suggest that the formation of intermolecular hydrogen bond of 3-hydroxy group with the solvent favors non-planar conformations of phenyl group with respect to chromone system. This steric hindrance is not observed in the case of furan- and benzofuran-substituted 3-hydroxychromones (3-HCs). These results suggesting, new strategy for dramatic improvement of fluorescence properties of 3-HCs as two-wavelength ratiometric fluorescence probes. (C) 2002 Elsevier Science B.V. All rights reserved.
Dosya adı | Boyutu | |
---|---|---|
bib-a0455066-fb4a-4a33-a18f-f11dbc453582.txt
md5:6600fdad1c2970fe016b2454a94d71a5 |
283 Bytes | İndir |
Görüntülenme | 12 |
İndirme | 4 |
Veri hacmi | 1.1 kB |
Tekil görüntülenme | 11 |
Tekil indirme | 4 |