Circular dichroism in excited triplet states. 1. Role of matrix birefringence, photoselection, and rotational diffusion

1983 ◽  
Vol 87 (17) ◽  
pp. 3226-3234 ◽  
Author(s):  
Daniel Lavalette ◽  
Catherine Tetreau
Keyword(s):  
Circular Dichroism ◽  
Rotational Diffusion ◽  
Triplet States ◽  
Excited Triplet ◽  
Circular Dichroïsm ◽  
Excited Triplet States

Circular dichroism in excited triplet states. 2. Chiral dimer-like molecules in the binaphthyl and spirobifluorene series

1983 ◽  
Vol 87 (17) ◽  
pp. 3234-3239 ◽  
Author(s):  
Catherine Tetreau ◽  
Daniel Lavalette ◽  
Daniel Cabaret ◽  
Niall Geraghty ◽  
Zoltan Welvart
Keyword(s):  
Circular Dichroism ◽  
Triplet States ◽  
Excited Triplet ◽  
Circular Dichroïsm ◽  
Excited Triplet States

A β-cyclodextrin–resveratrol inclusion complex and the role of geometrical and electronic effects on its electronic induced circular dichroism

RSC Advances ◽  
2013 ◽  
Vol 3 (26) ◽  
pp. 10242 ◽  
Author(s):  
Eduardo Troche-Pesqueira ◽  
Ignacio Pérez-Juste ◽  
Armando Navarro-Vázquez ◽  
María Magdalena Cid
Keyword(s):  
Circular Dichroism ◽  
Inclusion Complex ◽  
Induced Circular Dichroism ◽  
Electronic Effects ◽  
Circular Dichroïsm

The important role of non-covalent interactions for the vibrational circular dichroism of lactic acid in aqueous solution

2021 ◽  
Author(s):  
Sascha Jähnigen ◽  
Daniel Sebastiani ◽  
Rodolphe Vuilleumier
Keyword(s):  
Lactic Acid ◽  
Circular Dichroism ◽  
Computational Study ◽  
Bulk Water ◽  
Vibrational Circular Dichroism ◽  
Ab Initio Molecular Dynamics ◽  
Non Covalent Interactions ◽  
Circular Dichroïsm ◽  
Covalent Interactions

We present a computational study of vibrational circular dichroism (VCD) in solutions of (S)-lactic acid, relying on ab initio molecular dynamics (AIMD) and full solvation with bulk water. We discuss...

Citrate chelation as a potential mechanism against aluminum toxicity in cells: the role of calmodulin

1985 ◽  
Vol 63 (11) ◽  
pp. 1167-1175 ◽  
Author(s):  
Charles G. Suhayda ◽  
Alfred Haug
Keyword(s):  
Circular Dichroism ◽  
Conceptual Understanding ◽  
Aluminum Toxicity ◽  
Hydrophobic Surface ◽  
Native Structure ◽  
Calcium Calmodulin Dependent ◽  
Α Helix ◽  
Kinetics Of ◽  
Circular Dichroïsm

At a molar excess of [citrate]/[aluminum], this organic acid can protect calmodulin from aluminum binding if the metal is presented to the protein in stoichiometric micromolar quantities, as judged by fluorescence and circular dichroism spectroscopy. Similar citrate concentrations are also capable of fully restoring calmodulin's hydrophobic surface exposure to that of the native protein when calmodulin was initially damaged by aluminum binding. Fluoride anions are equally effective in restoring calmodulin's native structure as determined by fluorescence spectroscopy. Measurements of the kinetics of citrate-mediated aluminum removal also indicated that the metal ions are completely removed from calmodulin, consistent with results derived from atomic absorption experiments. On the other hand, results from circular dichroism studies indicated that citrate-mediated aluminum removal from calmodulin can only partially restore the α-helix content to that originally present in apocalmodulin or in calcium–calmodulin, dependent upon the absence or presence of calcium ions. The results that chelators like citrate can protect calmodulin from aluminum injury may provide a conceptual understanding of physiological observations regarding aluminum-tolerant plant species which are generally rich in certain organic acids.

An apparatus for pulsed ESR and DNP experiments using optically excited triplet states down to liquid helium temperatures

2013 ◽  
Vol 234 ◽  
pp. 58-66 ◽  
Author(s):  
T.R. Eichhorn ◽  
M. Haag ◽  
B. van den Brandt ◽  
P. Hautle ◽  
W.Th. Wenckebach ◽  
...  
Keyword(s):  
Liquid Helium ◽  
Triplet States ◽  
Excited Triplet ◽  
Excited Triplet States
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