A femtosecond study of photoinduced electron transfer from dimethylaniline to coumarin dyes in a cetyltrimethylammonium bromide micelle

Journal Article · Mon Aug 07 00:00:00 EDT 2006 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.2220570· OSTI ID:20864281

Ghosh, Subhadip; Sahu, Kalyanasis; Mondal, Sudip Kumar; Sen, Pratik; Bhattacharyya, Kankan ^[1]

---

1. Physical Chemistry Department, Indian Association for the Cultivation of Science Jadavpur, Kolkata-700 032 (India)

Ultrafast photoinduced electron transfer (PET) from N,N-dimethylaniline to coumarin dyes in cetyltrimethylammonium bromide (CTAB) micelle is studied using femtosecond upconversion spectroscopy. The rate of PET in a CTAB micelle is found to be highly nonexponential with components much faster ({approx}10 ps) than the slow components of solvation dynamics. The ultrafast components of electron transfer exhibits a bell-shaped dependence on the free energy change which is similar to the Marcus inversion.

• OSTI ID: 20864281
• Journal Information: Journal of Chemical Physics, Vol. 125, Issue 5; Other Information: DOI: 10.1063/1.2220570; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
AMMONIUM COMPOUNDS
BROMIDES
CHARGE EXCHANGE
COUMARIN
ELECTRON TRANSFER
FREE ENERGY
SOLVATION
SPECTROSCOPY