Excited-state dipole moments from absorption and fluorescence solvatochromic shifts — a better approach

1989 ◽  
Vol 101 (3) ◽  
pp. 269-271
Author(s):  
Narasimha H. Ayachit
Keyword(s):  
Excited State ◽  
Dipole Moments ◽  
Solvatochromic Shifts ◽  
Excited State Dipole Moments

Ground and Excited State Dipole Moments of BADAN and ACRYLODAN Determined from Solvatochromic Shifts of Absorption and Fluorescence Spectra

2001 ◽  
Vol 56 (5) ◽  
pp. 407-411 ◽  
Author(s):  
A. Kawski ◽  
B. Kukliriski ◽  
P. Bojarski
Keyword(s):  
Excited State ◽  
Excited States ◽  
Fluorescent Probes ◽  
Electric Dipole ◽  
Fluorescence Spectra ◽  
Dipole Moments ◽  
Absorption And Fluorescence Spectra ◽  
Electric Dipole Moments ◽  
Solvatochromic Shifts ◽  
Excited State Dipole Moments

Abstract The electric dipole moments in the ground μg, and excited states μe of the fluorescent probes BADAN (6-bromoacetyl-2-dimethylamino-naphthalene) and ACRYLODAN (6-acrylolyl-2-dimethylamino-naphthalene) are determined from the solvatochromic shifts of their absorption and fluorescence spec­tra for two Onsager interaction radii (a = 4.2 and 4.6 Å). The obtained values of μg and μe for BADAN are comparable to those of PRODAN, while for ACRYLODAN they are distinctly greater.

Ground-and Excited-State Dipole Moments of 6-Propionyl-2-(dimethylamino)naphthalene Determined from Solvatochromic Shifts

1999 ◽  
Vol 54 (6-7) ◽  
pp. 379-381 ◽  
Author(s):  
A. Kawski
Keyword(s):  
Dipole Moment ◽  
Excited State ◽  
Ground State ◽  
Singlet State ◽  
Fluorescence Probe ◽  
Dipole Moments ◽  
Free Molecule ◽  
Excited Singlet ◽  
Solvatochromic Shifts ◽  
Excited State Dipole Moments

Abstract The dipole moments in the ground-and excited-state of the fluorescence probe 6-propionyl-2-(dim-ethylamino)naphthalene (PRODAN) are determined from solvatochromic shifts to μe = 2.1 D and μg = 6.4 D. These values concern the free molecule. In the first excited singlet state the dipole moment is only 3 times greater than in the ground state.

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