Issue 60, 2020

How does excited-state antiaromaticity affect the acidity strengths of photoacids?

Abstract

Photoacids like substituted naphthalenes (X = OH, NH3+, COOH) are aromatic in the S0 state and antiaromatic in the S1 state. Nucleus independent chemical shifts analyses reveal that deprotonation relieves antiaromaticity in the excited conjugate base, and that the degree of “antiaromaticity relief” explains why some photoacids are stronger than others.

Graphical abstract: How does excited-state antiaromaticity affect the acidity strengths of photoacids?

Supplementary files

Article information

Article type
Communication
Submitted
23 Apr 2020
Accepted
18 May 2020
First published
27 May 2020

Chem. Commun., 2020,56, 8380-8383

Author version available

How does excited-state antiaromaticity affect the acidity strengths of photoacids?

Z. Wen, L. J. Karas, C. Wu and J. I. Wu, Chem. Commun., 2020, 56, 8380 DOI: 10.1039/D0CC02952A

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