Results 1 to 10 of about 653,357 (287)

Intermediates of reversible photochemistry of phycoerythrocyanin α from Mastigocladus laminosus probed by low temperature absorption and circular dichroism spectroscopy

International Journal of Photoenergy, 1999
The reversible photochemistry of the α-subunit of phycoerythrocyanin (α-PEC) has been measured by low temperature absorption and circular dichroism in the range of 125K to 295 K.
Kai-Hong Zhao, Hugo Scheer
doaj   +1 more source

Tunable chiral and nematic states in the triple-Q antiferromagnet Co1/3TaS2

Nature Communications
Complex spin configurations in magnetic materials, ranging from collinear single-Q to non-coplanar multi-Q states, exhibit rich symmetry and chiral properties.
Erik Kirstein, Pyeongjae Park, Woonghee Cho, Cristian D. Batista, Je-Geun Park, Scott A. Crooker   +5 more
doaj   +1 more source

Circular Dichroism Reflectance Anisotropy of Chiral Atomically Thin Films

Chemosensors
Recently, a technical modification of a Reflectance Anisotropy Spectroscopy (RAS) spectrometer has been proposed to investigate the circular dichroism (CD) of samples instead of the normally studied linear dichroism. CD-RAS measures the anisotropy of the
Ilaria Tomei, Filippo Pierucci, Beatrice Bonanni, Anna Sgarlata, Massimo Fanfoni, Seong-Jun Yang, Cheol-Joo Kim, Claudio Goletti   +7 more
doaj   +1 more source

Indole alkaloid sulfonic acids from an aqueous extract of Isatis indigotica roots and their antiviral activity

Acta Pharmaceutica Sinica B, 2017
Six new indole alkaloid sulfonic acids (1–6), together with two analogues (7 and 8) that were previously reported as synthetic products, were isolated from an aqueous extract of the Isatis indigotica root.
Lingjie Meng, Qinglan Guo, Yufeng Liu, Minghua Chen, Yuhuan Li, Jiandong Jiang, Jiangong Shi   +6 more
doaj   +1 more source

Method of oriented circular dichroism

Biophysical Journal, 1990
We present a new method for determining the orientation of alpha-helical sections of proteins or peptides in membrane. To apply this method, membranes containing proteins must be prepared in a multilayer array. Circular dichroism (CD) spectra of the multilayer sample are then measured at the normal as well as oblique incident angles with respect to the
Wu, Y., Huang, H.W., Olah, G.A.
openaire   +2 more sources

Chiroptical and Magneto‐Optical Properties of Chiral Copper Phthalocyanine‐Based Thin Films

ChemistryEurope
Chirality, once considered unrelated to magnetism, has recently been recognized to couple with magnetic fields through magneto‐chiral anisotropies (MChAs), such as magneto‐chiral dichroism (MChD).
Kazuyuki Ishii, Keishi Yamaguchi, Ryo Ishii, Kei Murata   +3 more
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Investigation on the Recognition of Split Aflatoxin M1 Aptamer

Shipin gongye ke-ji
In this work, AFM1 was chosen as the target, and the aptamer was split to solve the low sensitivity due to unstable structure of the aptamer. The recognition ability and specificity of the split aptamer were evaluated using electrochemical methods, and ...
Yekun ZHENG, Congcong DU, Honglin LI, Ting GUO, Yuhao ZHANG, Liang MA   +5 more
doaj   +1 more source

Giant Circular Dichroism in Individual Carbon Nanotubes Induced by Extrinsic Chirality

Physical Review X, 2014
Circular dichroism is widely used for characterizing organic and biological materials, but measurements at a single-molecule level are challenging because differences in absorption for opposite helicities are small. Here, we show that extrinsic chirality
A. Yokoyama, M. Yoshida, A. Ishii, Y. K. Kato   +3 more
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Electronic circular dichroism behavior of chiral Phthiobuzone

Acta Pharmaceutica Sinica B, 2014
Phthiobuzone is a bis(thiosemicarbazone) derivative with a single chiral center which has been used as a racemate in the clinical treatment of herpes and trachoma diseases.
Li Li, Lin Wang, Yikang Si
doaj   +1 more source

Multidimensional helical dichroism from a chiral molecular nanoassembly

Nature Communications
Detecting the chirality of molecules is of great importance in optics, biomedicine, and materials science. In chiroptical spectroscopy, it’s crucial to achieve strong chiroptical signals with a minimal number of chiral molecules.
Yusheng Jin, Xinghao Wang, Zhijie Xia, Xiaoxu Rao, Xiaomei Chen, Kaixuan Li, Yucheng Jiang, Jiaru Chu, Dong Wu, Cheng-Wei Qiu, Jincheng Ni   +10 more
doaj   +1 more source