Solvent effect on the absorption and fluorescence spectra of 7-acetoxy-6-(2,3-dibromopropyl)-4,8-dimethylcoumarin: Determination of ground and excited state dipole moments

Author(s):  
Yadigar Gülseven Sıdır ◽  
İsa Sıdır
2000 ◽  
Vol 55 (9-10) ◽  
pp. 817-822 ◽  
Author(s):  
A. Kawski ◽  
B. Kukliński ◽  
P. Bojarski ◽  
H. Diehl

Abstract The electric dipole moments in the ground /µg and excited state of the fluorescent probe LAUR-DAN are determined from solvatochromic and thermochromic shifts to be /µg = 3.46 D, µe = 10.6 D and /µg = 3.76 D, /µe = 10.24 D, respectively. These values concern the free LAURDAN molecule. The val-ues of the dipole moments of LAURDAN (= 6-decanoyl-2-dimethylamine-naphthalene) exceed dis-tinctly those of PRODAN (= 6-propionyl-2-dimethylamine-naphthalene).


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