“In situ” observation of the role of chloride ion binding to monkey green sensitive visual pigment by ATR-FTIR spectroscopy

2018 ◽  
Vol 20 (5) ◽  
pp. 3381-3387 ◽  
Author(s):  
Kota Katayama ◽  
Yuji Furutani ◽  
Masayo Iwaki ◽  
Tetsuya Fukuda ◽  
Hiroo Imai ◽  
...  
Keyword(s):  
Spectroscopic Study ◽  
Ftir Spectroscopy ◽  
Visual Pigment ◽  
Chloride Ion ◽  
Ion Binding ◽  
In Situ Observation ◽  
The Novel ◽  
Long Wavelength

ATR-FTIR spectroscopic study elucidates the novel role of Cl−-binding in primate long-wavelength-sensitive (LWS) visual pigment.

Understanding the Role of SnO 2 Support in Water‐Tolerant Methane Combustion: In situ Observation of Pd(OH) 2 and Comparison with Pd/Al 2 O 3

ChemCatChem ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 944-952 ◽  
Author(s):  
William Barrett ◽  
Jing Shen ◽  
Yongfeng Hu ◽  
Robert E. Hayes ◽  
Robert W. J. Scott ◽  
...  
Keyword(s):  
Methane Combustion ◽  
In Situ Observation

scholarly journals Novel ion-binding C3 symmetric tripodal triazoles: synthesis and characterization

2014 ◽  
Vol 12 (1) ◽  
pp. 115-125 ◽  
Author(s):  
Gábor Neumajer ◽  
Gergő Tóth ◽  
Szabolcs Béni ◽  
Béla Noszál
Keyword(s):  
2D Nmr ◽  
Ion Binding ◽  
The Novel ◽  
Spectrometric Data ◽  
Polydentate Ligands ◽  
Nmr Techniques ◽  
Sonogashira Reactions ◽  
Symmetric Ligands ◽  
Complexation Process

AbstractNovel C3 symmetric tripodal molecules were synthesized from cyclohexane 1,3,5-tricarboxylic acid. Utilizing click and Sonogashira reactions, ion-binding triazole and pyridazin-3(2H)-one units were incorporated to form polydentate ligands for ion complexation. The structures of the novel C3 symmetric derivatives were extensively characterized by 1H, 13C and 2D NMR techniques along with HRMS and IR. The copper(I)-binding potentials of these ligands were investigated by using them as additives in model copper(I)-catalysed azide-alkyne cycloaddition (CuAAC) reactions. The copper(I) complexation ability of our compound was also proved by different spectroscopic methods, such as mass spectrometry, UV and NMR spectroscopy. Based on the mass spectrometric data all of the C3 symmetric ligands formed 1:1 complex with copper(I) ion. The specific role of C3 symmetric polydentate form in the complexation process was also discussed

Defect clusters of molybdenum alloys bombarded by HVEM

1978 ◽  
Vol 36 (1) ◽  
pp. 402-403
Author(s):  
N. Igata ◽  
A. Kohyama ◽  
H. Murakami ◽  
K. Itadani ◽  
H. Tsunakawa
Keyword(s):  
Incident Beam ◽  
In Situ Observation ◽  
Dislocation Loops ◽  
Defect Clusters ◽  
Voltage Electron ◽  
Molybdenum Alloys ◽  
Damage Process ◽  
Hot Rolled

As a simulation study of heavy radiation damage by neutrons, in-situ observation of damage process in molybdenum alloys was performed by a high voltage electron microscope. The objectives of this study are to clarify the processes of defect cluster nucleation and growth, and the role of alloying elements on these in the temperature range from 300K to 1300K.The used molybdenum alloys were Mo-(150-1000)at.ppm.C, Mo-(0.06-0.6)at.%Nb, MO-0.29at.%Hf, MO-(0.026-26)at.%Re and Mo-0.56at.%Ni. The used materials were electron-beam melted and hot rolled at 200-400°C and annealing was performed in the vacuum of l×l0-7torr. at 1800°C for 1.0 hr. The standard irradiation conditions were as follows,Accelerating voltage: 1250KV, Beam intensity: l-6×l019 e/cm2 sec, Incident beam direction: <100>, g-vector: {110},The density of defect clusters was determined by the thickness gradient method.The logarithmic density of interstitial dislocation loops, logNi, increased with the reciprocal irradiation temperature, 1/T. The relation between logNiand 1/T was divided into two Arrhenius type relations above and below 500K.

scholarly journals Chloride Ion Binding to Bacteriorhodopsin at Low pH: An Infrared Spectroscopic Study

1999 ◽  
Vol 76 (4) ◽  
pp. 1951-1958 ◽  
Author(s):  
Lóránd Kelemen ◽  
Péter Galajda ◽  
Sándor Száraz ◽  
Pál Ormos
Keyword(s):  
Spectroscopic Study ◽  
Chloride Ion ◽  
Low Ph ◽  
Ion Binding ◽  
Infrared Spectroscopic Study ◽  
Infrared Spectroscopic

Role of Gln114 in Spectral Tuning of a Long-Wavelength Sensitive Visual Pigment

Biochemistry ◽  
2019 ◽  
Vol 58 (26) ◽  
pp. 2944-2952 ◽  
Author(s):  
Kota Katayama ◽  
Shunta Nakamura ◽  
Takuma Sasaki ◽  
Hiroo Imai ◽  
Hideki Kandori
Keyword(s):  
Visual Pigment ◽  
Spectral Tuning ◽  
Long Wavelength
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