scholarly journals Synthesis and characterization of a new benzobisoxazole/thiophene derivative polymer and the effect of the substituent on the push/pull properties

2021 ◽  
Author(s):  
Juan Carlos Ahumada ◽  
Juan Pablo Soto ◽  
Carlos Alemán ◽  
Juan Torras
Keyword(s):  
Synthesis And Characterization ◽  
Thiophene Derivative

Synthesis and characterization of low bandgap copolymers based on indenofluorene and thiophene derivative

2009 ◽  
Vol 47 (19) ◽  
pp. 5044-5056 ◽  
Author(s):  
Wei-Che Yen ◽  
Bikash Pal ◽  
Jye-Shane Yang ◽  
Ying-Chieh Hung ◽  
Shiang-Tai Lin ◽  
...  
Keyword(s):  
Synthesis And Characterization ◽  
Thiophene Derivative ◽  
Low Bandgap

The Synthesis and Characterization of Thiophene Derivative Polymers

2011 ◽  
Vol 284-286 ◽  
pp. 1846-1849 ◽  
Author(s):  
Wei Xing Chen ◽  
Su Yan Zhang ◽  
Ai Jie Ma ◽  
Qi Guan Wang
Keyword(s):  
Absorption Band ◽  
Chemical Oxidation ◽  
Electrochemical Activity ◽  
Strong Absorption ◽  
Synthesis And Characterization ◽  
Thiophene Derivative ◽  
The Media ◽  
Ft Ir ◽  
Important Kind

Thiophene derivative polymer is an important kind of conductive polymers. They often have good electrochemical activity, environment stability and ease of processing. Here, 3-bromothiophene and 3-thiophenezoic acid as monomers, using chemical oxidation approach, the poly (3-thiophenezoic acid) (PTPA), the copolymer of 3-bromine thiophene (BTP) and 3-thiophenezoic acid (TPA) are synthesized in the media of chloroform or methanol. The structures of both polymers are characterized with FT IR, NMR and UV-vis. The results showed that the reactivity of TPA can be improved after alkalizing. The copolymer has strong absorption in the UV region. Its absorption band and intensity are higher than that of PTPA.

Synthesis and Characterization of the Three Dicyclopentapyrenes

1996 ◽  
Vol 61 (10) ◽  
pp. 3572-3572
Author(s):  
Lawrence T. Scott ◽  
Atena Necula
Keyword(s):  
Synthesis And Characterization

Synthesis and characterization of TiN / Ti / AISI 410 coatings

2018 ◽  
Vol 2 (1) ◽  
pp. 7
Author(s):  
S Chirino ◽  
Jaime Diaz ◽  
N Monteblanco ◽  
E Valderrama
Keyword(s):  
Synthesis And Characterization ◽  
Photoemission Spectroscopy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Columnar Grains ◽  
Tin Thin Films ◽  
Steel Aisi ◽  
Interacting Surfaces ◽  
Stainless Steel Aisi

The synthesis and characterization of Ti and TiN thin films of different thicknesses was carried out on a martensitic stainless steel AISI 410 substrate used for tool manufacturing. The mechanical parameters between the interacting surfaces such as thickness, adhesion and hardness were measured. By means of the scanning electron microscope (SEM) the superficial morphology of the Ti/TiN interface was observed, finding that the growth was of columnar grains and by means of EDAX the existence of titanium was verified.  Using X-ray diffraction (XRD) it was possible to observe the presence of residual stresses (~ -3.1 GPa) due to the different crystalline phases in the coating. Under X-ray photoemission spectroscopy (XPS) it was possible to observe the molecular chemical composition of the coating surface, being Ti-N, Ti-N-O and Ti-O the predominant ones.

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