The Excited-State Dipole Moment of Nitrobenzene Estimated from Solvent Spectral Frequency Shifts
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Comparative Study of Excited State Dipole Moment of Coumarin Laser Dyes: Solvent and Substituent Effect
In the present work, an array of novel substituted 2H-chromen-2-one (coumarin derivatives abbreviated as C-337, C-480, C-540A) has been subjected to photophysical analysis. Although the influence of the electron donating groups such as amino, substituted amino, hydroxyl, alkoxy groups at position 7 of the coumarin ring system has been extensively studied, However, coumarin moieties with substit...
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PRODAN (Fig. 1) belongs to the category of solvent sensitive probes due to the fact that the aromatic naphthalene ring is attached to two groups: an electron donor and an electron acceptor which contribute to a distinct increase in the electric dipole moment A/u = /u,e-iug (/ie and is the dipole moment in the excited and ground state, respectively) as a result of excitation to the lowest excite...
متن کاملOn the Estimation of Excited-State Dipole Moments from Solvatochromic Shifts of Absorption and Fluorescence Spectra
The effect of the solvent polarity parameters f (e, n) and j (e, n) appearing in solvatochromic theories, and the effect of the molecular shape of the Onsager cavity (sphere, ellipsoid of revolution) on the determined electric dipole moments me in the singlet excited state are studied. It is found that the shape of the solute does not exhibit a significant effect on the determined values of me,...
متن کاملZeeman frequency shifts in an optical dipole trap used to search for an electric-dipole moment
We calculate the Zeeman frequency shifts due to interactions with the light in a far-off-resonance optical dipole trap. These shifts are important for potential use of such a trap to search for an atomic permanent electric-dipole moment ~EDM!. We present numerical results for Cs and Hg, as examples of paramagnetic and diamagnetic atoms. The vector and tensor light shifts are calculated for a la...
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* Address for correspondence: PL-84200 Wejherowo, ul. Gen. W. Sikorskiego 11, Poland. the increments in the dipole moments, A/J, determined for different fluorescent molecules, based on the LippertMataga solvent polarity parameter are much overrated in comparison to the values /ue obtained by electrooptical methods [7-10], In the present paper we determine the dipole moments ,ug and yue of P R ...
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 1991
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.64.2547