Laser-induced emission spectroscopy of acridine cooled in a supersonic jet: the role of dimers and hydrogen-bonding in photophysics of acridine

Autor:	J. Prochorow, O Morawski, Irena Deperasińska
Rok vydání:	2000
Předmět:	Chemistry Hydrogen bond Dimer Organic Chemistry Configuration interaction Photochemistry Fluorescence Analytical Chemistry Inorganic Chemistry chemistry.chemical_compound Acridine Physics::Atomic and Molecular Clusters Radiative transfer Supersonic speed Emission spectrum Spectroscopy
Zdroj:	Journal of Molecular Structure. 555:97-106
ISSN:	0022-2860
DOI:	10.1016/s0022-2860(00)00591-3
Popis:	The formation of acridine (ACD) dimers under supersonic jet-cooling conditions has been established by the observations of laser-induced fluorescence and fluorescence excitation spectra. The structure of ACD dimers predicted by using the semi-empirical AM1 parametric method suggests the possibility of the formation of hydrogen bonds between ACD moieties in the dimers. This possibility is verified with use the of the PM3 parametric method. The configuration interaction calculations performed for optimized dimer structures gives clear insights into the physical mechanism of the enhancement of the radiative processes in dimers (which, however, seems to be limited to specific conditions of supersonic expansions). The well-known role of hydrogen-bonding in the photophysics of ACD in protic liquid solutions is also supported by the results of preliminary observations under supersonic jet-cooling.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0636c20d172fb5e00e02b64eee547867 https://doi.org/10.1016/s0022-2860(00)00591-3 Zobrazit plný text záznamu Full Text from ScienceDirect