scholarly journals Electronic transitions of tetrathiafulvalene oriented in polyethylene film - Near and vacuum UV synchrotron radiation polarization spectroscopy

2020 ◽  
pp. 100009
Author(s):  
P.W. Thulstrup ◽  
S.V. Hoffmann ◽  
N.C. Jones ◽  
J. Spanget-Larsen
Keyword(s):  
Synchrotron Radiation ◽  
Polyethylene Film ◽  
Electronic Transitions ◽  
Radiation Polarization ◽  
Polarization Spectroscopy ◽  
Vacuum Uv

Characterization of III-nitride Based Schottky UV Detectors with Wide Detectable Wavelength Range (360–10 nm) using Synchrotron Radiation

2003 ◽  
Vol 798 ◽  
Author(s):  
Atsushi Motogaito ◽  
Kazumasa Hiramatsu ◽  
Yasuhiro Shibata ◽  
Hironobu Watanabe ◽  
Hideto Miyake ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Schottky Barrier ◽  
Wavelength Range ◽  
Epitaxial Layer ◽  
Device Performance ◽  
Uv Detectors ◽  
X Ray ◽  
High Responsivity ◽  
Vacuum Uv

ABSTRACTCharacterizations of transparent Schottky barrier GaN and AlGaN UV detectors in the vacuum UV (VUV) and soft X-ray (SX) region using synchrotron radiation are described. In the GaN UV detectors, the responsivity achieved about 0.05 A/W at 95 eV (13 nm). Thus, their device performance is shown between 3.4 and 100 eV (10 and 360 nm). Furthermore, the high responsivity spectra were realized by using AlGaN Schottky UV detectors consisting of Al0.5Ga0.5N on AlN epitaxial layer.

Bonding and electronic states of boron in silicon nanowires characterized by an infrared synchrotron radiation beam

Nanoscale ◽  
2015 ◽  
Vol 7 (16) ◽  
pp. 7246-7251 ◽  
Author(s):  
N. Fukata ◽  
W. Jevasuwan ◽  
Y. Ikemoto ◽  
T. Moriwaki
Keyword(s):  
Synchrotron Radiation ◽  
Excited States ◽  
Silicon Nanowires ◽  
Ground State ◽  
Electronic States ◽  
Electronic Transitions ◽  
Synchrotron Radiation Beam ◽  
Radiation Beam ◽  
Acceptor Atom ◽  
Ft Ir

The first report of B local vibrational peaks and electronic transitions of a bound hole from the ground state of a B acceptor atom to excited states by means of micro-FT-IR measurements using an IR-SR beam.

Vacuum UV Polarization Spectroscopy of p-Terphenyl

2017 ◽  
Vol 122 (1) ◽  
pp. 184-191 ◽  
Author(s):  
Duy Duc Nguyen ◽  
Nykola C. Jones ◽  
Søren V. Hoffmann ◽  
Jens Spanget-Larsen
Keyword(s):  
Polarization Spectroscopy ◽  
Vacuum Uv

Vacuum UV fluorescence excitation spectrum of ICl using synchrotron radiation

1985 ◽  
Vol 31 (2-3) ◽  
pp. 149-155 ◽  
Author(s):  
Elinor Kerr ◽  
Michael MacDonald ◽  
Robert J. Donovan ◽  
Jeremy P.T. Wilkinson ◽  
David Shaw ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Excitation Spectrum ◽  
Fluorescence Excitation Spectrum ◽  
Fluorescence Excitation ◽  
Uv Fluorescence ◽  
Vacuum Uv

scholarly journals UV synchrotron radiation linear dichroism spectroscopy of the anti-psoriatic drug anthralin

2019 ◽  
Vol 1 ◽  
pp. e5 ◽  
Author(s):  
Duy Duc Nguyen ◽  
Nykola C. Jones ◽  
Søren Vrønning Hoffmann ◽  
Jens Spanget-Larsen
Keyword(s):  
Synchrotron Radiation ◽  
Density Functional ◽  
Skin Diseases ◽  
Linear Dichroism ◽  
Intramolecular Proton Transfer ◽  
Functional Theory ◽  
Td Dft ◽  
Polarization Spectra ◽  
Vacuum Uv ◽  
Biochemical Action

Anthralin (1,8-dihydroxyanthrone, 1,8-dihydroxy-9(10H)-anthracenone), also known as dithranol and cignolin, is one of the most efficient drugs in the treatment of psoriasis and other skin diseases. The precise mode of biochemical action is not fully understood, but the activity of the drug is increased by the influence of UV radiation. In the present investigation, the UV absorption of anthralin is studied by synchrotron radiation linear dichroism (SRLD) spectroscopy on molecular samples partially aligned in stretched polyethylene, covering the near and vacuum UV regions with wavenumbers ranging from 23,000 to 58,000 cm–1(430–170 nm). The observed polarization spectra are well predicted by quantum chemical calculations using time-dependent density functional theory (TD–DFT). About a dozen spectral features are assigned to computed electronic transitions. The calculations support interpretation of the anomalous fluorescence of anthralin as a result of barrier-less excited state intramolecular proton transfer (ESIPT) to the tautomer 8,9-dihydroxy-1(10H)-anthracenone.

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