Abstract
In the present investigation the photophysics of the synthesized short-chain organic dyad, 1-(4-chloro-phenyl)-3-(4-methoxy-naphthalen-1-yl)-propenone (MNCA) has been studied both in isotropic media and gel (P123) environment by using steady state, time-resolved spectroscopic techniques and fluorescence anisotropy decay. From the NMR and time-resolved spectroscopic studies E-isomeric form (elongated nature) of the charge-transfer species of the dyad MNCA appears to be the only isomeric form in the ground state and this conformation retains even after photoexcitation whatever be the nature of the environment, the isotropic solution or micro-heterogeneous medium (gel phase of P123).
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