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A search for a low-lying excited1 a state in 1,3,5-hexatriene

✍ Scribed by A.J. Twarowski; D.S. Kliger

Publisher: Elsevier Science
Year: 1977
Tongue: English
Weight: 543 KB
Volume: 50
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(77)80675-1

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✦ Synopsis

The two-photon ab\orptron spectrum of 1,3,5-hexatnene has been investigated using Uierrnal blooming techniques. The spcctrtul; probes c.\cltcc! states 1y111.q 4.1. eV to 6.5 eV above the ground stare. The mvestlgation does not reveal the cxcitcd 'Ai stdk predlctcd, by Pl'P Laklklt!ons With wlgk! PhlS doclbfc Cxcltatrorl co!IfigUratiOrl mtcractlon, to lie in this energy range.

Ca.lculntmn\ of two-plloton cross mztlons indicate that the two-photon trarwtion to tflis low-lying 'Ai state would be wcnk In spite of the f,ict that tlic transition is symmetry zhwed. f . htroduction In 1972, Ifudson and Kohlcr [I J rcportcd a weak transition in the mixed crystal spectrum of 1 &diphenyl-OCtateklenC (DPO) at an cncrgy slightly below that of tllc well-k:mwn, Jlowcd transitloi!

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