Reorientations of coenzyme in aspartate transaminase studied on single crystals of the enzyme by polarized-light spectrophotometry

Temperature-dependent domain configurations were studied for both unpoled and poled [110]C-oriented 0.63Pb(Mg1/3Nb2/3)O3–0.37PbTiO3 (PMN–0.37PT) single crystals by polarized light microscopy (PLM).

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Quantitative analysis with advanced compensated polarized light microscopy on wavelength dependence of linear birefringence of single crystals causing arthritis

Journal of Physics D Applied Physics ◽

10.1088/0022-3727/47/28/285402 ◽

2014 ◽

Vol 47 (28) ◽

pp. 285402 ◽

Cited By ~ 2

Author(s):

Akifumi Takanabe ◽

Masahito Tanaka ◽

Atsuo Taniguchi ◽

Hisashi Yamanaka ◽

Toru Asahi

Keyword(s):

Quantitative Analysis ◽

Light Microscopy ◽

Single Crystals ◽

Polarized Light ◽

Wavelength Dependence ◽

Polarized Light Microscopy ◽

Linear Birefringence

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Direct observation of monoclinic ferroelectric phase and domain switching process in (K0.25Na0.75)NbO3 single crystals

CrystEngComm ◽

10.1039/c4ce02199a ◽

2015 ◽

Vol 17 (14) ◽

pp. 2872-2877 ◽

Cited By ~ 16

Author(s):

Hao Deng ◽

Haiwu Zhang ◽

Xiangyong Zhao ◽

Chao Chen ◽

Xi'an Wang ◽

...

Keyword(s):

Light Microscopy ◽

Single Crystals ◽

Direct Observation ◽

Ferroelectric Phase ◽

Domain Switching ◽

Polarized Light ◽

Switching Process ◽

X Ray Diffraction ◽

X Ray

The domain-switching process of monoclinic K0.25Na0.75NbO3 single crystals were studied by in situ polarized light microscopy and X-ray diffraction.

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Light Absorption by Pyrene Single Crystals Between 4 and 300 °K

Zeitschrift für Naturforschung A ◽

10.1515/zna-1973-0620 ◽

1973 ◽

Vol 28 (6) ◽

pp. 973-979 ◽

Cited By ~ 4

Author(s):

D. Fischer ◽

G. Naundorf ◽

W. Klöpffer

Keyword(s):

Phase Transition ◽

Transition Temperature ◽

Single Crystals ◽

Absorption Edge ◽

Ground State ◽

Light Absorption ◽

Room Temperature ◽

Polarized Light ◽

Equilibrium Distance ◽

Exciton Transport

Pyrene single crystals have been grown from zone refined material by sublimation and from the melt. The absorption edge has been measured for thick and thin crystals at room temperature. Thin crystals have been successfully cooled below the phase transition temperature (123 °K) without cracking. The sharp absorption peak at 376 nm vanishes at this temperature while the fluorescence spectrum remains unchanged. Using polarized light below 50 °K, a band with a maximum at 410 nm appears whose intensity increases with decreasing temperature. It is concluded that this band is due to ground-to-excimer state absorption in the ground state equilibrium distance of the pyrene molecules. The consequences of this finding for excimer-exciton transport is discussed.

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THE ELECTRONIC SPECTRA OF CRYSTALLINE TOLUENE, DIBENZYL, DIPHENYLMETHANE, AND BIPHENYL IN THE NEAR ULTRAVIOLET

Canadian Journal of Chemistry ◽

10.1139/v58-006 ◽

1958 ◽

Vol 36 (1) ◽

pp. 48-58 ◽

Cited By ~ 60

Author(s):

Robert Coffman ◽

Donald S. McClure

Keyword(s):

Single Crystals ◽

Excited States ◽

Electronic Absorption ◽

Electronic Spectra ◽

Weak Coupling ◽

Electronic Absorption Spectra ◽

Polarized Light ◽

Near Ultraviolet ◽

Benzene Rings ◽

First Time

The electronic absorption spectra of single crystals of toluene, dibenzyl, diphenylmethane, and biphenyl have been photographed at 20 °K. using polarized light in the range 3000 to 2500 Å. The fluorescence spectrum of biphenyl has also been examined. This is the first time that the excited states of biphenyl analogous to the B2u state of benzene have been observed. The main features of the spectra are similar for all four compounds, and the differences may be understood in terms of the weak coupling between the benzene rings of the "double molecules".

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