Stimulated emission of ultraviolet radiation by vapors of complex molecules

Barkova, L. A.; Gruzinskii, V. V.; Danilova, V. I.; Degtyarenko, K. M.; Kopylova, T. N.; Кузнецов, А. Л.

doi:10.1070/qe1981v011n08abeh008040

Cited by 11 publications

(3 citation statements)

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“…Chemistry of heterocycles is always a subject of interest. Besides the fundamental interest in the area of heterocycles, these compounds can be used as intermediates, and fine products for drugs, , color industries, laser dyes, complex-forming agents, , redox systems for solar energy, and organized assemblies . Besides these applications, another area of interest is the study of hydrogen transfer and the prototropism with suitable substituents, for example, amino-, hydroxy-, − and aminophenylbenzazoles .…”

Section: Introductionmentioning

confidence: 99%

Spectral Characteristics of the Various Prototropic Species of 2-(4‘-N,N-Dimethylaminophenyl)pyrido[3,4-d]imidazole

Krishnamoorthy

Dogra

1999

J. Org. Chem.

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Spectral characteristics of 2-(4'-N,N-dimethylaminophenyl)pyrido[3,4-d]imidazole (DMAPPI) have been studied in two different solvents and H(0)/pH/H(-) range of -10 to +16. Combining the results observed in the absorption, fluorescence, and fluorescence excitation spectra, it is found that (i) only one kind of monoanion (deprotonation of >N-H group) and one kind of trication, (ii) two kinds of monocations (MC1 and MC3) in the ground state and (MC2 and MC3) in the excited singlet state, and (iii) three kinds of dications (DC1, DC2, and DC3) are observed. Semiempirical quantum mechanical calculations (AM1) have been carried out on all kinds of ionic species and their resonating structures. The spectral characteristics have been assigned to various prototropic species combining the experimental and theoretical results.

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Section: Introductionmentioning

confidence: 99%

Spectral Characteristics of the Various Prototropic Species of 2-(4‘-N,N-Dimethylaminophenyl)pyrido[3,4-d]imidazole

Krishnamoorthy

Dogra

1999

J. Org. Chem.

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“…According to the literature, more than 200 organic compounds have been examined for the existence of laser action in the gas phase; of these more than 70 were found to exhibit the phenomenon [1,4,5,[24][25][26][27][28][29][30][31][32][33][34][35][36][37][38]. Pumping was carried out by several different means: with second-harmonic radiation from a ruby laser (Ap = 347 nm) or a nitrogen laser (337 nm), with the third and fourth harmonics from a neodymium laser (357 and 266nm), and the radiation (308 and 248nm) from an excimer laser.…”

Section: Resultsmentioning

confidence: 99%

Lasing of Vapours of Complex Organic Compounds

Borisevich

1985

Optica Acta: International Journal of Optics

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Recent types of frequency tunable laser whose active media are vapours of complex organic compounds are reviewed. The potential of such media for amplifying and generating radiation are analysed. The criteria for searching for new substances which generate radiation in the gas phase have been formulated. The properties of vapour-generated radiation-spectrum, frequency tuning, time characteristics, efficiency, divergence and polarization-are discussed in detail. Of particular interest are gases which, when added to the active vapour, modify the laser characteristics without affecting the properties of the radiation generated. The possibility of using organic vapours to investigate complex molecules and as a source of frequency-tunable radiation are discussed.

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“…For example, these molecules can be used as intermediates [1], fine products for drugs [2][3][4][5] and pesticides [6,7], dyes [8] and laser dyes [9], redox systems for solar energy [10], organized assemblies [11] and complex-forming agents [12,13]. Other areas where these molecules have been used extensively are inter- [14][15][16][17][18][19][20] and intramolecular proton transfer reactions [21] in S 0 and S 1 states.…”

Section: Introductionmentioning

confidence: 99%