scholarly journals Role of impurities on the optical properties of rectangular graphene flakes

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Z. S. Sadeq ◽  
Rodrigo A. Muniz ◽  
J. E. Sipe
Keyword(s):  
Optical Properties ◽  
Graphene Flakes

scholarly journals Role of the Anilinium Ion on the Selective Polymerization of Anilinium 2-Acrylamide-2-methyl-1-propanesulfonate

Polymers ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 2349
Author(s):  
Alain Salvador Conejo-Dávila ◽  
Marco Armando Moya-Quevedo ◽  
David Chávez-Flores ◽  
Alejandro Vega-Rios ◽  
Erasto Armando Zaragoza-Contreras
Keyword(s):  
Cyclic Voltammetry ◽  
Optical Properties ◽  
Thermal Properties ◽  
Free Radical ◽  
1H Nmr ◽  
Molecular Interactions ◽  
13C Nmr ◽  
Oxidative Polymerization ◽  
Cyclic Voltammetry Analysis

The development of anilinium 2-acrylamide-2-methyl-1-propanesulfonate (Ani-AMPS) monomer, confirmed by 1H NMR, 13C NMR, and FTIR, is systematically studied. Ani-AMPS contains two polymerizable functional groups, so it was submitted to selective polymerization either by free-radical or oxidative polymerization. Therefore, poly(anilinium 2-acrylamide-2-methyl-1-propanesulfonic) [Poly(Ani-AMPS)] and polyaniline doped with 2-acrylamide-2-methyl-1-propanesulfonic acid [PAni-AMPS] can be obtained. First, the acrylamide polymer, poly(Ani-AMPS), favored the π-stacking of the anilinium group produced by the inter- and intra-molecular interactions and was studied utilizing 1H NMR, 13C NMR, FTIR, and UV-Vis-NIR. Furthermore, poly(Ani-AMPS) fluorescence shows quenching in the presence of Fe2+ and Fe3+ in the emission spectrum at 347 nm. In contrast, the typical behavior of polyaniline is observed in the cyclic voltammetry analysis for PAni-AMPS. The optical properties also show a significant change at pH 4.4. The PAni-AMPS structure was corroborated through FTIR, while the thermal properties and morphology were analyzed utilizing TGA, DSC (except PAni-AMPS), and FESEM.

scholarly journals Effect of dopant concentration and the role of ZnS shell on optical properties of Sm3+ doped CdS quantum dots

RSC Advances ◽  
2021 ◽  
Vol 11 (14) ◽  
pp. 7961-7971
Author(s):  
N. D. Vinh ◽  
P. M. Tan ◽  
P. V. Do ◽  
S. Bharti ◽  
V. X. Hoa ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Dopant Concentration ◽  
Core Shell ◽  
Cds Quantum Dots ◽  
Cds Qds

The role of samarium (Sm) dopant on the structural, morphological, and optical properties of CdS QDs and CdS/ZnS core/shell QDs was methodically reported.

Optical properties of GaSb(001)-c(2 × 6): The role of surface antisite defects

2010 ◽  
Vol 247 (8) ◽  
pp. 1960-1964 ◽  
Author(s):  
Conor Hogan ◽  
Rita Magri ◽  
Rodolfo Del Sole
Keyword(s):  
Optical Properties ◽  
Antisite Defects

Exploring Structural Dynamics and Optical Properties of UnaG Fluorescent Protein upon N57 Mutations

2021 ◽  
Author(s):  
Mohammad Asad ◽  
Adèle D Laurent
Keyword(s):  
Optical Properties ◽  
Structural Dynamics ◽  
Fluorescent Protein ◽  
Green Light ◽  
Endogenous Ligand ◽  
New Class ◽  
Fluorescence Protein

UnaG is a new class of fluorescence protein for which an endogenous ligand namely bilirubin (BLR) is playing the role of the chromophore. Upon photoexcitation, holoUnaG emits the green light....

scholarly journals Role of Bismuth and Substrate Temperature on the Optical Properties of Some Flash Evaporated Se<SUB>100-X</SUB> Bi<SUB>X</SUB> Glassy System

2015 ◽  
Vol 05 (02) ◽  
pp. 16-24 ◽  
Author(s):  
Austine A. Mulama ◽  
Julius M. Mwabora ◽  
Andrew O. Oduor ◽  
Cosmas M. Muiva ◽  
Boniface Muthoka ◽  
...  
Keyword(s):  
Optical Properties ◽  
Substrate Temperature ◽  
Glassy System
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