Origin of the Long Wavelength Fluorescence Band in Some Preparations of J-Aggregates:  Low-Temperature Fluorescence and Hole Burning Study

1998 ◽  
Vol 102 (11) ◽  
pp. 1916-1919 ◽  
Author(s):  
Martin Vacha ◽  
Makoto Furuki ◽  
Toshiro Tani
Keyword(s):  
Low Temperature ◽  
Fluorescence Band ◽  
Hole Burning ◽  
Long Wavelength ◽  
J Aggregates

Low-temperature performance of InP-based long-wavelength VCSELs

2007 ◽  
Vol 89 (4) ◽  
pp. 579-584 ◽  
Author(s):  
A. Lytkine ◽  
A. Lim ◽  
J. Bacque ◽  
W. Jäger ◽  
J. Tulip
Keyword(s):  
Low Temperature ◽  
Long Wavelength ◽  
Temperature Performance ◽  
Low Temperature Performance

The Position of Carotene in the D-1/D-2 Sub-Core Complex of Photosystem II

1988 ◽  
Vol 43 (3-4) ◽  
pp. 226-230 ◽  
Author(s):  
S. S. Brody
Keyword(s):  
Low Temperature ◽  
Photosystem Ii ◽  
Fluorescence Spectrum ◽  
Fluorescence Excitation Spectrum ◽  
Core Complex ◽  
Excitation Spectra ◽  
Fluorescence Excitation ◽  
Pheophytin A ◽  
Long Wavelength ◽  
Β Carotene

When the sub-core complex of photosystem II, D1/D2, is irradiated at 436 or 415 nm (absorption by chlorophyll and pheophytin and β-carotene) or 540 nm (absorption primarily by pheophytin), the low temperature fluorescence spectrum has two maxima, at 685 and 674 nm. This shows the existence of at least two different fluorescent forms of chlorophyll (chlorophyll a and perhaps pheophytin a). When carotene is irradiated at 485 nm (absorption primarily by β-carotene), only fluorescence at 685 nm is observed: this indicates that carotene is transferring energy to only the long-wavelength form of chlorophyll in the D1/D2 sub-core complex. The band of carotene (at 485 nm) does not appear in the fluorescence excitation spectrum, measured at 674 nm. The position of the carotene molecule relative to each of the fluorescent forms of chlorophyll was determined from the excitation spectra of each of the fluorescence bands.

Light-Induced Structural Changes of J-Aggregates of Organic Dyes at Low Temperature

1995 ◽  
Vol 189 (1) ◽  
pp. 51-57 ◽  
Author(s):  
M. Lindrum ◽  
S. Daehne
Keyword(s):  
Low Temperature ◽  
Structural Changes ◽  
Organic Dyes ◽  
J Aggregates

Low-temperature spectroscopy of organic molecules in solids by photochemical hole burning

1982 ◽  
Vol 29 (4) ◽  
pp. 235-250 ◽  
Author(s):  
L. A. Rebane ◽  
A. A. Gorokhovskii ◽  
J. V. Kikas
Keyword(s):  
Low Temperature ◽  
Organic Molecules ◽  
Hole Burning ◽  
Photochemical Hole Burning
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