Chloro benzoate cyanine picolinium photoacid excited-state proton transfer to water
| Autor: | Doron Shabat, Dan Huppert, Ron Simkovitch, Ori Green, Oren Gajst |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
010304 chemical physics Proton General Chemical Engineering General Physics and Astronomy Salt (chemistry) General Chemistry 010402 general chemistry Photochemistry 01 natural sciences Fluorescence 0104 chemical sciences chemistry.chemical_compound Reaction rate constant Deprotonation chemistry Excited state 0103 physical sciences Kinetic isotope effect Cyanine |
| Zdroj: | Journal of Photochemistry and Photobiology A: Chemistry. 349:230-237 |
| ISSN: | 1010-6030 |
| DOI: | 10.1016/j.jphotochem.2017.08.056 |
| Popis: | Steady-state and time-resolved fluorescence techniques were employed to study the photoacidity of a newly synthesized photoacid, the chloro benzoate cyanine picolinium salt. It was found that the ESPT rate constant is ultrafast in water ( k PT = 6.2 × 10 12 s −1 ). We also found that the kinetic isotope effect is ∼1.7. The deprotonated form of the photoacid has a short lifetime of about 95 ps. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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