Relation between the absorption and the emission spectra of chlorophyll a and its derivatives at room and low temperature

1969 ◽  
Vol 25 (11) ◽  
pp. 1751-1758 ◽  
Author(s):  
J. Hevesi ◽  
G.S. Singhal
Keyword(s):  
Low Temperature ◽  
Chlorophyll A ◽  
Emission Spectra

Laser Spectrofluorimetry of Chlorophylls

1974 ◽  
Vol 52 (22) ◽  
pp. 3723-3727 ◽  
Author(s):  
Roger M. Leblanc ◽  
Geneviève Galinier ◽  
Alain Tessier ◽  
Lise Lemieux
Keyword(s):  
Chlorophyll A ◽  
Emission Spectra ◽  
Polarization Rotator ◽  
Excitation Beam ◽  
Solid States ◽  
Set Up

A device has been set up to determine quantitatively the weak fluorescence intensities of pigment molecules. It consists of a laser spectrofluorimeter. The excitation beam can be produced with either a He/Cd laser (441.6 nm) or a He/Ne laser (632.8 nm). This system allows us to detect the fluorescence of dilute chlorophyll a or b solutions of the order of 10−12 mol/l. This sensitivity also permits the study of the emission spectra from chlorophyll in monomolecular or solid states, and since a polarization rotator has been incorporated into our apparatus, one may presume some possible orientation of the molecules.

Low temperature emission spectra of optically nonlinear N-benzyl-2-methyl-4-nitroaniline crystal

2012 ◽  
Vol 404 ◽  
pp. 28-32 ◽  
Author(s):  
Katarzyna Piela ◽  
Bolesław Kozankiewicz ◽  
Józef Lipiński ◽  
M. Magdalena Szostak
Keyword(s):  
Low Temperature ◽  
Emission Spectra

Spectroanalytical Parameters of Fungal Metabolites. IV. Moniliformin

1974 ◽  
Vol 57 (6) ◽  
pp. 1392-1396 ◽  
Author(s):  
J A Lansden ◽  
R J Clarkson ◽  
W C Neely ◽  
R J Cole ◽  
J W Kirksey
Keyword(s):  
Low Temperature ◽  
Aqueous Solutions ◽  
Ambient Temperature ◽  
Emission Spectrum ◽  
Potassium Salt ◽  
Emission Spectra ◽  
Fungal Metabolites ◽  
Fungal Metabolite ◽  
Fluorescence Excitation ◽  
Phosphorescence Emission

Abstract The spectral data for a novel fungal metabolite, moniliformin (potassium salt of 1-hydroxycyclobut- 1-ene-3,4-dione), are reported. The corrected ambient temperature fluorescence excitation and emission spectra are given and the quantum efficiency is calculated to be 5.32 × 10舓3. The uncorrected low temperature phosphorescence emission spectrum and lifetime are also reported. Other physical data are given to support spectral evidence that the molecule exists as a dimer in aqueous solutions.

A Low-temperature Emission Band from Dilute Solutions of Pure Chlorophyll a

Nature ◽  
1963 ◽  
Vol 199 (4898) ◽  
pp. 1097-1098 ◽  
Author(s):  
SEYMOUR STEVEN BRODY ◽  
S. B. BROYDE
Keyword(s):  
Low Temperature ◽  
Chlorophyll A ◽  
Emission Band ◽  
Dilute Solutions
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