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A spectral hole‐burning study of long‐wavelength chlorophyll a forms in greening leaves at 5 K
Author(s) -
Mauring Koit,
Renge Indrek,
Avarmaa Rein
Publication year - 1987
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(87)80529-x
Subject(s) - fluorescence , chlorophyll , spectral line , wavelength , excitation , absorption (acoustics) , chemistry , atomic electron transition , absorption spectroscopy , singlet state , vibronic spectroscopy , molecular electronic transition , phonon , chlorophyll fluorescence , chlorophyll a , greening , analytical chemistry (journal) , molecular physics , atomic physics , photochemistry , physics , optics , condensed matter physics , excited state , organic chemistry , quantum mechanics , astronomy , chromatography , political science , law , biochemistry
Persistent holes have been burnt in the spectra of post‐etiolated maize leaves in the spectral interval 700–745 nm at 5 K. Narrow (< 1 cm −1 ) holes detectable both in fluorescence and excitation spectra correspond to the zero‐phonon purely electronic S 1 ◀S 0 transition of chlorophyll a rather than to the S 1 ←S 0 vibronic or S 1 ←S 0 higher singlet transitions. The spectral composition of the inhomogeneously broadened absorption and fluorescence contours of long‐wavelength chlorophyll a forms in plants is discussed in terms of the contributions of phonon‐wings, vibronic satellites, purely electronic S 1 ◀S 0 transitions and its higher excitonic components.