Spectroscopic investigation of 3-pyrazolyl 2-pyrazoline derivative in homogeneous solvents |
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| Authors: | Pramanik Smritimoy Banerjee Paltu Sarkar Arindam Mukherjee Attreyee Mahalanabis Kumar K Bhattacharya Subhash Chandra |
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| Institution: | Department of Chemistry, Jadavpur University, Kolkata 700032, India. |
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| Abstract: | How solvent conditions such as solvent polarity and hydrogen-bonding affect the fluorescence of a newly synthesized 3-pyrazolyl 2-pyrazoline derivative (Pyz) having pharmaceutical activity has been explored. The solvatochromic effect of Pyz is due to a change in dipole moment of the compound in the excited state. The relaxation of S1 state is perturbed in hydrogen-bonding solvents. The fluorescence properties of the systems are strongly dependent on the polarity of the media. The non-radiative relaxation process is facilitated by an increase in the polarity of the media. The photophysical response of Pyz in different solvents has been explained considering solute-solvent interactions. |
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