Abstract

In this present work, we have determined the ground and excited state dipole moments of two Rhodamine dyes with similar molecular skeleton and having different functional groups, namely Rhodamine 560 chloride (R560) and Rhodamine 610 Chloride (R610). Absorption and emission spectra of R560 and R610 were recorded in binary mixtures of DMSO-Water and 2 Propanol-Water at varying compositions. The two probes exhibit hypochromic / bathochromic shift in absorption and fluorescence spectra for different compositions of aqueous organic solvents. This shift arises mainly because of polarity of the solvent. By employing solvatochromic shift method we have determined the ground and excited state dipole moments. The experimentally obtained results suggest that the excited state dipole moments of two probes are much higher than their ground state dipole moments.

Details

Title
Photophysical Properties of Rhodamine Dyes in Aqueous Organic Solvents: Evaluation of Ground and Excited State Dipole moments
Author
Pujari, Vikram 1 ; Patil, Mallikarjun K 1 ; Tilakraj, T S 1 ; Bhat, Vighneshwar S 1 ; Inamdar, Sanjeev R 1 

1  Laser Spectroscopy Programme, Department of Physics, Karnatak University , Dharwad, India-580003 
First page
012012
Publication year
2022
Publication date
Mar 2022
Publisher
IOP Publishing
ISSN
17578981
e-ISSN
1757899X
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1088/1757-899X/1221/1/012012
ProQuest document ID
2647395226
Copyright
Published under licence by IOP Publishing Ltd. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.