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First π-electron transitions in finite polymethine chains

✍ Scribed by Irina Repyakh

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
485 KB
Volume
57
Category
Article
ISSN
0020-7608

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✦ Synopsis

In the present article, polymethine and annulene electronic spectra are described in a unique way by means of the Pariser-Parr-Pople method. The analytical expressions were derived for the first r-electron transitions energies. The character of the annulene spectra, like the character of the open-chain spectra, was shown to be dependent on the ratio between electron and site numbers. The Dahne's triad theory and the existence of finite energy gap in polymethines are discussed. 0 1996 John Wiley & Sons, hc.

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