Aggregation-induced Chirality Amplification of Optically Active Fluorescent Polyurethane and Cyclic Dimer in the Ground and Excited States

2021 ◽  
Author(s):  
Zhiyi Song ◽  
Hiroyasu Sato ◽  
Adriana Pietropaolo ◽  
Qingyu Wang ◽  
Shuhei Shimoda ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Excited States ◽  
Optically Active ◽  
Spectral Intensity ◽  
Cyclic Dimer ◽  
Aggregate Formation ◽  
Circular Dichroïsm

Optically active linear polyurethane and cyclic dimer were synthesized from 2,7-diisocyanatofluorene and 2,2’-dihydroxy-1,1’-binaphthyl. Circular dichroism (CD) spectral intensity of polymer was amplified at a higher concentration through aggregate formation while...

New Approach to the Theory of Circular Dichroism

1998 ◽  
Vol 63 (8) ◽  
pp. 1187-1201 ◽  
Author(s):  
Jaroslav Zamastil ◽  
Lubomír Skála ◽  
Petr Pančoška ◽  
Oldřich Bílek
Keyword(s):  
Electromagnetic Wave ◽  
Circular Dichroism ◽  
Electromagnetic Waves ◽  
Maxwell Equations ◽  
Optically Active ◽  
Semiclassical Approach ◽  
New Approach ◽  
Isotropic Media ◽  
New Formula ◽  
Circular Dichroïsm

Using the semiclassical approach for the description of the propagation of the electromagnetic waves in optically active isotropic media we derive a new formula for the circular dichroism parameter. The theory is based on the idea of the time damped electromagnetic wave interacting with the molecules of the sample. In this theory, the Lambert-Beer law need not be taken as an empirical law, however, it follows naturally from the requirement that the electromagnetic wave obeys the Maxwell equations.

First optically active ferricinium salts: A circular dichroism study

1992 ◽  
Vol 438 (3) ◽  
pp. C26-C28 ◽  
Author(s):  
Viatcheslav I. Sokolov ◽  
Irina A. Mamedyarova ◽  
Marina N. Nefedova ◽  
Günther Snatzke
Keyword(s):  
Circular Dichroism ◽  
Optically Active ◽  
Circular Dichroïsm

Circulardichroismusuntersuchungen von Polyalkohol- und Zucker-Vanadat(V)-Komplexen / Circular Dichroism Studies of Polyalcohol and Sugar Vanadate(V) Complexes

1989 ◽  
Vol 44 (11) ◽  
pp. 1464-1472 ◽  
Author(s):  
Hermann Bauer ◽  
Jeanine Brun ◽  
Alexius R. Hernanto ◽  
Wolfgang Voelter ◽  
Spyridon Paraskewas
Keyword(s):  
Circular Dichroism ◽  
Wavelength Range ◽  
Optically Active ◽  
Hydroxyl Groups ◽  
Pyranose Ring ◽  
Cotton Effects ◽  
Circular Dichroïsm

The complexes of tetravanadate ions with optically active polyols and carbohydrates with suitable steric properties show up to four separate cotton effects in the wavelength range of λ = 200-350 nm. Thus it is possible to classify pyranoses into four groups according to their circular dichroitic behaviour and determine the configuration and the conformation of the hydroxyl groups attached to the pyranose ring.

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
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