Infrared spectrum, molecular structure and theoretical calculation of 2-pyridone-6-carboxylic acid

2007 ◽  
Vol 839 (1-3) ◽  
pp. 76-83 ◽  
Author(s):  
H. Arslan ◽  
A. Şengül ◽  
S. Aygün ◽  
N. Karadayı ◽  
S. Haman Bayarı
Keyword(s):  
Molecular Structure ◽  
Carboxylic Acid ◽  
Infrared Spectrum ◽  
Theoretical Calculation

Molecular Structure, Theoretical Calculation and Thermal Behavior of DAG(NTO)

2008 ◽  
Vol 26 (9) ◽  
pp. 1549-1554 ◽  
Author(s):  
Chun-Ran CHANG ◽  
Kang-Zhen XU ◽  
Jie HUANG ◽  
Meng LI ◽  
Ji-Rong SONG ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Thermal Behavior ◽  
Theoretical Calculation

Infrared and Raman spectrum, molecular structure and theoretical calculation of 3,4-dichlorophenylboronic acid

2009 ◽  
Vol 921 (1-3) ◽  
pp. 178-187 ◽  
Author(s):  
Mustafa Kurt ◽  
T. Raci Sertbakan ◽  
Mustafa Özduran ◽  
Mehmet Karabacak
Keyword(s):  
Molecular Structure ◽  
Raman Spectrum ◽  
Theoretical Calculation

scholarly journals Chiral recognition and enantiomer excess determination based on emission wavelength change of AIEgen rotor

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Ming Hu ◽  
Ying-Xue Yuan ◽  
Weizhou Wang ◽  
Dong-Mi Li ◽  
Hong-Chao Zhang ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Theoretical Calculation ◽  
Fluorescence Intensity ◽  
Chiral Recognition ◽  
Natural World ◽  
Enantiomer Excess ◽  
Intensity Changes ◽  
Colour Changes ◽  
Chiral Receptors ◽  
Fluorescence Wavelength

AbstractChiral recognition, such as enantioselective interactions of enzyme with chiral agents, is one of the most important issues in the natural world. But artificial chiral receptors are much less efficient than natural ones. For tackling the chiral recognition and enantiomer excess (ee) analysis, up until now all the fluorescent receptors have been developed based on fluorescence intensity changes. Here we report that the chiral recognition of a large number of chiral carboxylic acids, including chiral agrochemicals 2,4-D, is carried out based on fluorescent colour changes rather than intensity changes of AIEgen rotors. Moreover, the fluorescence wavelength of the AIEgen rotor linearly changes with ee of the carboxylic acid, enabling the ee to be accurately measured with average absolute errors (AAE) of less than 2.8%. Theoretical calculation demonstrates that the wavelength change is ascribed to the rotation of the AIEgen rotor upon interaction with different enantiomers.

Study of Molecular Structure of Water-Soluble Phenolic Resin with Different Molecular Weight by Infrared Spectrum

2014 ◽  
Vol 900 ◽  
pp. 15-19 ◽  
Author(s):  
Xing Lei ◽  
Gui Long Xu ◽  
Jin Yang ◽  
Jian Hu
Keyword(s):  
Molecular Structure ◽  
Molecular Weight ◽  
Infrared Spectrum ◽  
Sodium Hydroxide ◽  
Phenolic Resin ◽  
Addition Reaction ◽  
Early Stage ◽  
Water Soluble ◽  
Structure Of Water ◽  
Different Molecular Weight

Water-soluble phenolic resin was prepared using sodium hydroxide and ammonia as catalysts. The molecular structure of water-soluble phenolic with different molecular weight was studied by infrared spectrum and the mechanism was discussed. The results show that addition reaction and polycondensation synchronize in the reaction process, while addition reaction dominates in the early stage while polycondensation dominates in the later stage.

Sign in / Sign up

Export Citation Format

Share Document