Synthesis and absorption and luminescence spectral properties of 3-formyl and 3-acetyl-7- (diethylamino) coumarin hydrazones

Journal Article · Thu Oct 10 00:00:00 EDT 1985 · J. Gen. Chem. USSR (Engl. Transl.); (United States)

OSTI ID:7004795

Komlev, I V; Khrolova, O R; Mikhailova, T A; Tavrizova, M A

Various substitued coumarins are of interest as organic luminphors, many of which are effective laser dyes for the blue-green region of the spectrum. This paper attempts to extend the range of fluorescent coumarin dyes by synthesizing and investigating substitued hydrazones of 3-formyl- and 3-acetyl-coumarins (III). The absorption and luminescence spectral properties of the coumarins synthesized are discussed. Some lowering of the quantum yield of fluorescence in comparison with known coumarins is explained by the nonradiative degradation of the energy of electron excitation, which competes with the fluorescence.

• Research Organization: Research Institute or Organic Intermediates and Dyes, Mosocw
• OSTI ID: 7004795
• Journal Information: J. Gen. Chem. USSR (Engl. Transl.); (United States), Journal Name: J. Gen. Chem. USSR (Engl. Transl.); (United States) Vol. 55:4, PT. 2; ISSN JGCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ABSORPTION SPECTRA
ANTICOAGULANTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMILUMINESCENCE
COUMARINS
DIAGRAMS
DRUGS
DYES
FLUORESCENCE
HEMATOLOGIC AGENTS
HIGH TEMPERATURE
KINETICS
LASER MATERIALS
LUMINESCENCE
MATERIALS
REACTION KINETICS
SPECTRA
SYNTHESIS
YIELDS