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Dendritic Polyglutamic Porphyrins: Probing Porphyrin Protection by Oxygen‐Dependent Quenching of Phosphorescence
Author(s) -
Vinogradov Sergei A.,
Lo LeuWei,
Wilson David F.
Publication year - 1999
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/(sici)1521-3765(19990401)5:4<1338::aid-chem1338>3.0.co;2-n
Subject(s) - porphyrin , phosphorescence , dendrimer , quenching (fluorescence) , photochemistry , polyglutamic acid , chemistry , oxygen , core (optical fiber) , oxygen sensor , fluorescence , materials science , polymer chemistry , organic chemistry , biochemistry , physics , quantum mechanics , composite material
Phosphorescence quenching of the porphyrin core by O 2 has been studied in a series of dendritic polyglutamic porphyrins. As the generation number increases, in water the dendritic ligands make it increasingly difficult for oxygen to reach the Pd–porphyrin core (figure); they provide no protection in DMF, since there the structure of the dendrimer is more open.