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Clennan EL, Welch W, El-Idreesy TT, Arulsamy N. Regiochemistry and substituent effects on pyrylogen and thiopyrylogen stability and electronic character. CAN J CHEM 2015. [DOI: 10.1139/cjc-2014-0338] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A physical organic analysis of a collection of 57 data sets generated by B3LYP/6-311+G(2d,p) geometry optimizations and TD-DFT calculations is presented. The analysis engenders recommendations for syntheses of new pyrylogen electron-transfer sensitizers that are potentially optimized for low energy absorbance and high extinction coefficients. It is argued that bathochromically shifted intense absorbance is especially useful to avoid competitive absorbance by electron-transfer substrates and for use at the low concentrations likely achievable in experimentally attractive nonpolar solvents.
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Affiliation(s)
- Edward L. Clennan
- Department of Chemistry, University of Wyoming, 1000 East University Avenue, Laramie, WY 82071, USA
| | - Will Welch
- Department of Chemistry, University of Wyoming, 1000 East University Avenue, Laramie, WY 82071, USA
| | | | - Navamoney Arulsamy
- Department of Chemistry, University of Wyoming, 1000 East University Avenue, Laramie, WY 82071, USA
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El-Idreesy TT, Clennan EL. Hydrolytic Stability of N-Methyl-2,6-dimesityl-4,4′-Pyrylogen Bis-tetrafluoroborate. J Org Chem 2011; 76:7175-9. [DOI: 10.1021/jo201180j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Edward L. Clennan
- Department of Chemistry, University of Wyoming, 1000 East University Avenue, Laramie, Wyoming, United States
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