OSU Navigation Bar

The Ohio State University University Libraries Knowledge Bank

The Knowledge Bank is scheduled for regular maintenance on Sunday, April 20th, 8:00 am to 12:00 pm EDT. During this time users will not be able to register, login, or submit content.

BIPROTONIC PHOTOTAUTOMERISM IN 7-AZAINDOLE HYDROGEN BONDED DIMERS

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/8498

Show full item record

Files Size Format View
1970-P-03.jpg 86.00Kb JPEG image Thumbnail of BIPROTONIC PHOTOTAUTOMERISM IN 7-AZAINDOLE HYDROGEN BONDED DIMERS

Title: BIPROTONIC PHOTOTAUTOMERISM IN 7-AZAINDOLE HYDROGEN BONDED DIMERS
Creators: Ingham, Kenneth C.; Abu-Elgheitt, M.; El-Bayoumi, M. Ashraf
Issue Date: 1970
Abstract: 7-Azaindole forms doubly-hydrogen bonded dimers in saturated hydrocarbon solutions. These solutions exhibit two fluorescence bands in the near ultraviolet. In addition to the normal violet fluorescence of 7-azaindole $F_{1} (\lambda_{\max}\sim 3300$ \AA), a green fluorescence $F_{2}$ appears prominently ($\lambda{\max}\sim 4750$ {\AA}). This green fluorescence is interpreted as arising from a tautometric form of the dimer in which two protons have been transferred during the lifetime of the excited state of the dimer. The relative intensities of $F_{2}$ and $F_{4}$ have been examined as a function of temperature, exciting wavelength and concentration. Effect of deuteration of the pyrrolic hydrogen on luminescence is investigated. The luminescence properties of N-methyl-7-azaindole and other related derivatives were compared with that of 7-azaindole. These studies confirm our interpretation of excited-state two-proton tautomerism in 7-azaindole hydrogen-bonded dimer.
URI: http://hdl.handle.net/1811/8498
Other Identifiers: 1970-P-3
Bookmark and Share