Planar Chirality:  Synthesis and Transannular Reactions of Unsaturated Optically Active Azoninones BearingE-Olefins

2000 ◽  
Vol 65 (6) ◽  
pp. 1710-1720 ◽  
Author(s):  
Alexander Sudau ◽  
Winfried Münch ◽  
Udo Nubbemeyer ◽  
Jan W. Bats
Keyword(s):  
Optically Active ◽  
Planar Chirality

ChemInform Abstract: Planar Chirality: Cycloaddition and Transannular Reactions of Optically Active Azoninones that Contain (E)-Olefins.

ChemInform ◽  
2010 ◽  
Vol 33 (10) ◽  
pp. no-no
Author(s):  
Alexander Sudau ◽  
Winfried Muench ◽  
Jan W. Bats ◽  
Udo Nubbemeyer
Keyword(s):  
Optically Active ◽  
Planar Chirality

Chemoenzymatic synthesis of optically active 1,2-disubstituted ferrocenes with planar chirality

2009 ◽  
Vol 20 (12) ◽  
pp. 1371-1377 ◽  
Author(s):  
Mounia Merabet-Khellasi ◽  
Louisa Aribi-Zouioueche ◽  
Olivier Riant
Keyword(s):  
Optically Active ◽  
Chemoenzymatic Synthesis ◽  
Planar Chirality

Control of Axial Chirality by Planar Chirality Based on Optically Active [2.2]Paracyclophane

2020 ◽  
Vol 26 (65) ◽  
pp. 14871-14877 ◽  
Author(s):  
Genki Namba ◽  
Yuki Mimura ◽  
Yoshitane Imai ◽  
Ryo Inoue ◽  
Yasuhiro Morisaki
Keyword(s):  
Optically Active ◽  
Axial Chirality ◽  
Planar Chirality

New approach to chiral phosphapalladacycles: first optically active phosphinite PC-palladacycle with non-metallocenic planar chirality

2008 ◽  
Vol 19 (13) ◽  
pp. 1519-1522 ◽  
Author(s):  
Valery V. Dunina ◽  
Eugeniya I. Turubanova ◽  
Michail V. Livantsov ◽  
Konstantin A. Lyssenko ◽  
Yuri K. Grishin
Keyword(s):  
Optically Active ◽  
New Approach ◽  
Planar Chirality

scholarly journals Ferrocene-Containing Optically Active Liquid-Crystalline Side-Chain Polysiloxanes with Planar Chirality

2006 ◽  
Vol 16 (2) ◽  
pp. 260-267 ◽  
Author(s):  
J. Brettar ◽  
T. Bürgi ◽  
B. Donnio ◽  
D. Guillon ◽  
R. Klappert ◽  
...  
Keyword(s):  
Liquid Crystalline ◽  
Optically Active ◽  
Side Chain ◽  
Planar Chirality ◽  
Active Liquid

Cover Feature: Control of Axial Chirality by Planar Chirality Based on Optically Active [2.2]Paracyclophane (Chem. Eur. J. 65/2020)

2020 ◽  
Vol 26 (65) ◽  
pp. 14772-14772
Author(s):  
Genki Namba ◽  
Yuki Mimura ◽  
Yoshitane Imai ◽  
Ryo Inoue ◽  
Yasuhiro Morisaki
Keyword(s):  
Optically Active ◽  
Axial Chirality ◽  
Planar Chirality

Optical analysis of ink and other contaminants in process waters

TAPPI Journal ◽  
2012 ◽  
Vol 11 (8) ◽  
pp. 51-58
Author(s):  
ANTTI HAAPALA ◽  
MIKA KÖRKKÖ ◽  
ELISA KOIVURANTA ◽  
JOUKO NIINIMÄKI
Keyword(s):  
Optically Active ◽  
Process Water ◽  
Paper Machine ◽  
Optical Analysis ◽  
Direct Process ◽  
Active Components ◽  
Water Contaminants ◽  
Dependent Measurement ◽  
Measurement Methodology

Analysis methods developed specifically to determine the presence of ink and other optically active components in paper machine white waters or other process effluents are not available. It is generally more interest¬ing to quantify the effect of circulation water contaminants on end products. This study compares optical techniques to quantify the dirt in process water by two methods for test media preparation and measurement: direct process water filtration on a membrane foil and low-grammage sheet formation. The results show that ink content values obtained from various analyses cannot be directly compared because of fundamental issues involving test media preparation and the varied methodologies used to formulate the results, which may be based on different sets of assumptions. The use of brightness, luminosity, and reflectance and the role of scattering measurements as a part of ink content analysis are discussed, along with fine materials retention and measurement media selection. The study concludes with practical tips for case-dependent measurement methodology selection.

Microscopic Structure of Er-Related Optically Active Centers in Si

2003 ◽  
Vol 770 ◽  
Author(s):  
H. Przybylinska ◽  
N. Q. Vinh ◽  
B.A. Andreev ◽  
Z. F. Krasil'nik ◽  
T. Gregorkiewicz
Keyword(s):  
Ground State ◽  
Photoluminescence Spectrum ◽  
Zeeman Effect ◽  
Optically Active ◽  
Single Type ◽  
Active Centers ◽  
Mbe Growth ◽  
Spectral Components ◽  
Er Doped ◽  
Successful Observation

AbstractA successful observation and analysis of the Zeeman effect on the near 1.54 μm photoluminescence spectrum in Er-doped crystalline MBE-grown silicon are reported. A clearly resolved splitting of 5 major spectral components was observed in magnetic fields up to 5.5 T. Based on the analysis of the data the symmetry of the dominant optically active center was conclusively established as orthorhombic I (C2v), with g‼≈18.4 and g⊥≈0 in the ground state. The fact that g⊥≈0 explains why EPR detection of Er-related optically active centers in silicon may be difficult. Preferential generation of a single type of an optically active Er-related center in MBE growth confirmed in this study is essential for photonic applications of Si:Er.

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