What can two-dimensional correlation infrared spectroscopy (2D-IR) tell us about the composition, origin and authenticity of herbal medicines?

2013 ◽  
Vol 2 (2) ◽  
pp. 101-113 ◽  
Author(s):  
Qun Zhou ◽  
Jianbo Chen ◽  
Suqin Sun
Keyword(s):  
Infrared Spectroscopy ◽  
Herbal Medicines ◽  
Two Dimensional ◽  
2D Ir

Dynamic Analysis of Polymer-Dispersed Liquid Crystal by Infrared Spectroscopy

1993 ◽  
Vol 47 (9) ◽  
pp. 1386-1389 ◽  
Author(s):  
Ray Hasegawa ◽  
Masanori Sakamoto ◽  
Hideyuki Sasaki
Keyword(s):  
Infrared Spectroscopy ◽  
Liquid Crystal ◽  
Side Chain ◽  
Two Dimensional ◽  
Rigid Core ◽  
Polymer Dispersed Liquid Crystal ◽  
2D Ir ◽  
Polymer Dispersed ◽  
Polymerization Induced Phase Separation ◽  
Two Dimensional Infrared Spectroscopy

The dynamic behavior of a polymer-dispersed liquid crystal (PDLC) under an electric field has been studied by static and two-dimensional infrared spectroscopy. The PDLC sample was prepared by polymerization-induced phase separation of a mixture of nematic liquid crystal E7 and acrylate. 2D IR correlation analysis indicates that the rigid core of the liquid crystal molecules reorients as a unit, and suggests that the polymer side chain existing in the interface between the polymer and the liquid crystals may reorient in phase with the liquid crystal reorientation by interaction with the liquid crystal molecules.

scholarly journals Applications of two-dimensional infrared spectroscopy

The Analyst ◽  
2015 ◽  
Vol 140 (13) ◽  
pp. 4336-4349 ◽  
Author(s):  
Amanda L. Le Sueur ◽  
Rachel E. Horness ◽  
Megan C. Thielges
Keyword(s):  
Infrared Spectroscopy ◽  
Ir Spectroscopy ◽  
Two Dimensional ◽  
2D Ir ◽  
Two Dimensional Infrared Spectroscopy

The potential of 2D IR spectroscopy is illustrated through select examples of recent applications in chemistry and biology.

scholarly journals Two-dimensional infrared spectroscopy: an emerging analytical tool?

The Analyst ◽  
2020 ◽  
Vol 145 (6) ◽  
pp. 2014-2024
Author(s):  
Robby Fritzsch ◽  
Samantha Hume ◽  
Lucy Minnes ◽  
Matthew J. Baker ◽  
Glenn A. Burley ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Data Analysis ◽  
Ir Spectroscopy ◽  
Recent Progress ◽  
Analytical Tool ◽  
Two Dimensional ◽  
Laser Technology ◽  
2D Ir ◽  
Two Dimensional Infrared Spectroscopy ◽  
Data Analysis Methods

Recent progress in laser technology and data analysis methods has enabled high throughput applications of ultrafast two-dimensional infrared (2D-IR) spectroscopy measurements and opened the door to analytical applications.

Protein Dynamics by Two-Dimensional Infrared Spectroscopy

2021 ◽  
Vol 14 (1) ◽  
pp. 299-321
Author(s):  
Goran W. Tumbic ◽  
Md Yeathad Hossan ◽  
Megan C. Thielges
Keyword(s):  
Infrared Spectroscopy ◽  
Ir Spectroscopy ◽  
Protein Dynamics ◽  
Two Dimensional ◽  
Spatial And Temporal Scales ◽  
2D Ir ◽  
Functional Dynamics ◽  
Powerful Approach ◽  
Two Dimensional Infrared Spectroscopy

Proteins function as ensembles of interconverting structures. The motions span from picosecond bond rotations to millisecond and longer subunit displacements. Characterization of functional dynamics on all spatial and temporal scales remains challenging experimentally. Two-dimensional infrared spectroscopy (2D IR) is maturing as a powerful approach for investigating proteins and their dynamics. We outline the advantages of IR spectroscopy, describe 2D IR and the information it provides, and introduce vibrational groups for protein analysis. We highlight example studies that illustrate the power and versatility of 2D IR for characterizing protein dynamics and conclude with a brief discussion of the outlook for biomolecular 2D IR.

scholarly journals Does liquid–liquid phase separation drive peptide folding?

2021 ◽  
Author(s):  
Dean N. Edun ◽  
Meredith R. Flanagan ◽  
Arnaldo L. Serrano
Keyword(s):  
Infrared Spectroscopy ◽  
Phase Separation ◽  
Liquid Phase ◽  
Model Membrane ◽  
Peptide Folding ◽  
Two Dimensional ◽  
Intrinsically Disordered ◽  
Intrinsically Disordered Peptide ◽  
Two Dimensional Infrared Spectroscopy ◽  
Liquid Liquid Phase Separation

Two-dimensional infrared spectroscopy reveals folding of an intrinsically disordered peptide when sequestered into a model “membrane-less” organelle.

scholarly journals Understanding the structure and dynamics of hydrogenases by ultrafast and two-dimensional infrared spectroscopy

2019 ◽  
Vol 10 (39) ◽  
pp. 8981-8989 ◽  
Author(s):  
Marius Horch ◽  
Janna Schoknecht ◽  
Solomon L. D. Wrathall ◽  
Gregory M. Greetham ◽  
Oliver Lenz ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Two Dimensional ◽  
Proof Of Concept ◽  
Concept Study ◽  
Structure And Dynamics ◽  
Two Dimensional Infrared Spectroscopy

A proof-of-concept study on a catalytic [NiFe] intermediate reveals structural and dynamical details of hydrogenases by ultrafast and two-dimensional infrared spectroscopies.

Generalized two-dimensional correlation infrared spectroscopy to reveal mechanisms of CO2 capture in nitrogen enriched biochar

2017 ◽  
Vol 36 (3) ◽  
pp. 3933-3940 ◽  
Author(s):  
Xiong Zhang ◽  
Shihong Zhang ◽  
Haiping Yang ◽  
Jingai Shao ◽  
Yingquan Chen ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Co2 Capture ◽  
Two Dimensional
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