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Inne
Ground and excited state proton transfer reaction of salicylidine-3,4,7-methyl amine in micelles.
Autorzy
Rok wydania
2006
Czasopismo
Numer woluminu
420
Strony
316-320
DOI
10.1016/j.cplett.2006.01.002
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The effect of neutral, cationic and anionic micellar environments on the ground and excited state proton transfer reactions of salicylidine-3,4,7-methyl amine (SMA) in water has been studied by steady state and time resolved fluorescence spectroscopy. In the ground state, the formation of the primary form of SMA is enhanced at the expense of the zwitterionic species due to micellization. In the excited state, anion formation decreases both in the presence of Triton-X and cetyl trimethyl ammonium bromide (CTAB). However, in the presence of sodium dodecyl sulphate (SDS), the anionic emission increases after reaching a certain micellar concentration. The lifetime of the anion is significantly reduced in CTAB compared to that in the bulk water and also in the presence of Triton-X. It is proposed that the destabilization and modification of SMA anion occurs due to the different electrostatic environments produced by micellization.
Adres publiczny
https://doi.org/10.1016/j.cplett.2006.01.002
Strona internetowa wydawcy
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