Ultrafast solvation dynamics of dimethyl sulfoxide induced by excited-state intramolecular proton transfers

2020 ◽  
Author(s):  
Myungsam Jen ◽  
Sebok Lee ◽  
Yoonsoo Pang
Keyword(s):  
Excited State ◽  
Dimethyl Sulfoxide ◽  
Solvation Dynamics ◽  
Proton Transfers

Excited-State Solvation Dynamics in 4-Aminophthalimide

1984 ◽  
pp. 359-361 ◽  
Author(s):  
Sheila W. Yeh ◽  
L. A. Philips ◽  
S. P. Webb ◽  
L. F. Buhse ◽  
J. H. Clark
Keyword(s):  
Excited State ◽  
Solvation Dynamics

Excited state proton transfer effect of 7-hydroxyquinoline in dimethyl sulfoxide solvent

2006 ◽  
Vol 2 (2) ◽  
pp. 115-117 ◽  
Author(s):  
Yang-xue Guo ◽  
Xiang-ping Li ◽  
Jia-jin Zheng ◽  
Gui-Ian Zhang ◽  
Jing-jiang Liu ◽  
...  
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Dimethyl Sulfoxide ◽  
Transfer Effect ◽  
Excited State Proton Transfer

Excited-State Solvation Dynamics in Solid Tetraalkylammonium Salts

1995 ◽  
Vol 99 (22) ◽  
pp. 9253-9257 ◽  
Author(s):  
E. Bart ◽  
A. Meltsin ◽  
D. Huppert
Keyword(s):  
Excited State ◽  
Solvation Dynamics ◽  
Tetraalkylammonium Salts

Excited-State Proton Transfer: Molecules in a Hurry to Get Rid of Antiaromaticity

2019 ◽  
Author(s):  
Chia-Hua Wu ◽  
Lucas Karas ◽  
Henrik Ottosson ◽  
Judy Wu
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Chemical Shifts ◽  
Proton Relay ◽  
Proton Transfers ◽  
Bifunctional Compounds ◽  
Excited State Proton Transfer ◽  
Derivatives Of ◽  
Related Compounds

<p>Baird’s rule explains why and when excited-state proton transfer (ESPT) reactions happen in organic compounds. Bifunctional compounds that are [4<i>n</i>+2] π-aromatic in the ground state, become [4<i>n</i>+2] π-antiaromatic in the first <sup>1</sup>ππ* states, and proton transfer (either<i>inter-</i>or <i>intra-</i>molecularly) helps relieve excited-state antiaromaticity. Computed nucleus independent chemical shifts (NICS) for several ESPT examples (including excited-state intramolecular proton transfers (ESIPT), biprotonic transfers, dynamic catalyzed transfers, and proton relay transfers) document the important role of excited-state antiaromaticity. <i>o-</i>Salicylic acid undergoes ESPT only in the “antiaromatic” S<sub>1</sub>(<sup>1</sup>ππ*) state, but not in the “aromatic” S<sub>2</sub>(<sup>1</sup>ππ*) state. Stokes’ shifts of structurally-related compounds (<i>e.g.</i>, derivatives of 2-(2-hydroxyphenyl)benzoxazole and hydrogen-bonded complexes of 2-aminopyridine with pro tic substrates) vary depending on the antiaromaticity of the photoinduced tautomers. Remarkably, Baird’s rule predicts the effect of light on hydrogen bond strengths; hydrogen bonds that enhance (and reduce) excited-state antiaromaticity in compounds become weakened (and strengthened) upon photoexcitation.</p>

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