ChemInform Abstract: Configurational Assignment of α-Chiral Carboxylic Acids by Complexation to Dimeric Zn-Porphyrin: Host-Guest Structure, Chiral Recognition and Circular Dichroism.

ChemInform ◽  
2010 ◽  
Vol 33 (46) ◽  
pp. no-no
Author(s):  
Gloria Proni ◽  
Gennaro Pescitelli ◽  
Xuefei Huang ◽  
Nazia Q. Quraishi ◽  
Koji Nakanishi ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Carboxylic Acids ◽  
Chiral Recognition ◽  
Configurational Assignment ◽  
Circular Dichroïsm

Circular Dichroism of CdSe Nanocrystals Bound by Chiral Carboxylic Acids

ACS Nano ◽  
2017 ◽  
Vol 11 (12) ◽  
pp. 12240-12246 ◽  
Author(s):  
Mayank Puri ◽  
Vivian E. Ferry
Keyword(s):  
Circular Dichroism ◽  
Carboxylic Acids ◽  
Cdse Nanocrystals ◽  
Circular Dichroïsm

Optically Active Ultrafine Au–Ag Alloy Nanoparticles Used for Colorimetric Chiral Recognition and Circular Dichroism Sensing of Enantiomers

2017 ◽  
Vol 89 (18) ◽  
pp. 9781-9787 ◽  
Author(s):  
Jianjia Wei ◽  
Yanjia Guo ◽  
Jizhou Li ◽  
Mengke Yuan ◽  
Tengfei Long ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Chiral Recognition ◽  
Optically Active ◽  
Alloy Nanoparticles ◽  
Circular Dichroïsm

Nanogram scale absolute configurational assignment of ceramides by circular dichroism

1999 ◽  
Vol 40 (43) ◽  
pp. 7645-7649 ◽  
Author(s):  
Hong Jiang ◽  
Xuefei Huang ◽  
Koji Nakanishi ◽  
Nina Berova
Keyword(s):  
Circular Dichroism ◽  
Configurational Assignment ◽  
Circular Dichroïsm

scholarly journals Applied Circular Dichroism: A Facile Spectroscopic Tool for Configurational Assignment and Determination of Enantiopurity

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Macduff O. Okuom ◽  
Raychelle Burks ◽  
Crysta Naylor ◽  
Andrea E. Holmes
Keyword(s):  
Circular Dichroism ◽  
High Performance ◽  
Maximum Amplitude ◽  
Qualitative Evaluation ◽  
Racemic Mixture ◽  
Good Tool ◽  
Configurational Assignment ◽  
Cotton Effects ◽  
Spectroscopic Tool ◽  
Circular Dichroïsm

In order to determine if electronic circular dichroism (ECD) is a good tool for the qualitative evaluation of absolute configuration and enantiopurity in the absence of chiral high performance liquid chromatography (HPLC), ECD studies were performed on several prescriptions and over-the-counter drugs. Cotton effects (CE) were observed for both S and R isomers between 200 and 300 nm. For the drugs examined in this study, the S isomers showed a negative CE, while the R isomers displayed a positive CE. The ECD spectra of both enantiomers were nearly mirror images, with the amplitude proportional to the enantiopurity. Plotting the differential extinction coefficient (Δε) versus enantiopurity at the wavelength of maximum amplitude yielded linear standard curves with coefficients of determination (R2) greater than 97% for both isomers in all cases. As expected, Equate, Advil, and Motrin, each containing a racemic mixture of ibuprofen, yielded no chiroptical signal. ECD spectra of Suphedrine and Sudafed revealed that each of them is rich in 1S,2S-pseudoephedrine, while the analysis of Equate vapor inhaler is rich in R-methamphetamine.

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