Electronic excited states of azo compounds: Strong ππ* fluorescence of bis-4,4′-diethylaminoazobenzene

✍ Scribed by Miloš Nepraš; Stanislav Luňák Jr.; Radim Hrdina; Jürgen Fabian

• Publisher: Elsevier Science
• Year: 1989
• Tongue: English
• Weight: 437 KB
• Volume: 159
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(89)87501-3

✦ Synopsis

The low-temperature absorption and luminescence spectra of bis-4,4'-diethylaminoazobenzene (BDAAB) in 2_methyltetrahydrofurane (MTHF) have been measured. On the basis of the spectral characteristics, this luminescence is interpreted as the fluorescence from the first excited singlet state (xx* ). A comparison of the spectral and photophysical properties of BDAAB with those of other para-substituted trans-azobenzenes enables us to draw some conclusions concerning the structure and fluorescence of these systems.