Spectroscopic investigation of 3-pyrazolyl 2-pyrazoline derivative in homogeneous solvents

被引：45

作者：

Pramanik, Smritimoy ^{[1
]}

Banerjee, Paltu ^{[1
]}

Sarkar, Arindam ^{[1
]}

Mukherjee, Attreyee ^{[1
]}

Mahalanabis, Kumar K. ^{[1
]}

Bhattacharya, Subhash Chandra ^{[1
]}

机构：

[1] Jadavpur Univ, Dept Chem, Kolkata 700032, India

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2008年 / 71卷 / 04期

关键词：

Fluorescence; Relaxation dynamics; Solvent polarity; Hydrogen bonding;

D O I：

10.1016/j.saa.2008.04.011

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

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 S-1 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. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：1327 / 1332

页数：6

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