Influence of Molecular Weight on Molecular Ordering and Proton Transport in Organized Sulfonated Polyimide Thin Films

2015 ◽  
Vol 119 (38) ◽  
pp. 21767-21774 ◽  
Author(s):  
Karthik Krishnan ◽  
Hiroko Iwatsuki ◽  
Mitsuo Hara ◽  
Shusaku Nagano ◽  
Yuki Nagao
Keyword(s):  
Thin Films ◽  
Molecular Weight ◽  
Proton Transport ◽  
Sulfonated Polyimide ◽  
Molecular Ordering

scholarly journals Influence of Confined Polymer Structure on Proton Transport Property in Sulfonated Polyimide Thin Films

2014 ◽  
Vol 82 (10) ◽  
pp. 865-869 ◽  
Author(s):  
Karthik KRISHNAN ◽  
Tomoaki YAMADA ◽  
Hiroko IWATSUKI ◽  
Mitsuo HARA ◽  
Shusaku NAGANO ◽  
...  
Keyword(s):  
Thin Films ◽  
Transport Property ◽  
Proton Transport ◽  
Polymer Structure ◽  
Sulfonated Polyimide ◽  
Confined Polymer

Proton conductivity enhancement in oriented, sulfonated polyimide thin films

2014 ◽  
Vol 2 (19) ◽  
pp. 6895-6903 ◽  
Author(s):  
Karthik Krishnan ◽  
Hiroko Iwatsuki ◽  
Mitsuo Hara ◽  
Shusaku Nagano ◽  
Yuki Nagao
Keyword(s):  
Thin Films ◽  
Proton Conductivity ◽  
Polymer Electrolytes ◽  
Proton Transport ◽  
Structure Property ◽  
Conductivity Enhancement ◽  
Additional Information ◽  
Sulfonated Polyimide ◽  
Structure Property Relationships ◽  
Thin Polymer

Studies of proton transport in confined thin polymer electrolytes are essential for providing additional information regarding the structure–property relationships of such materials.

scholarly journals Effect of Casting Solvent on Interfacial Molecular Structure and Proton Transport Characteristics of Sulfonated Polyimide Thin Films

2017 ◽  
Vol 33 (1) ◽  
pp. 35-39 ◽  
Author(s):  
Yuki NAGAO ◽  
Karthik KRISHNAN ◽  
Ryosuke GOTO ◽  
Mitsuo HARA ◽  
Shusaku NAGANO
Keyword(s):  
Molecular Structure ◽  
Thin Films ◽  
Proton Transport ◽  
Sulfonated Polyimide

Degradation in a Methyl-phenyl Co-Polymeric Polysilane for LED Applications

2003 ◽  
Vol 769 ◽  
Author(s):  
Asha Sharma ◽  
Deepak ◽  
Monica Katiyar ◽  
Satyendra Kumar ◽  
V. Chandrasekhar ◽  
...  
Keyword(s):  
Thin Films ◽  
Molecular Weight ◽  
Light Source ◽  
Room Temperature ◽  
Light Exposure ◽  
Room Temperature Photoluminescence ◽  
Pl Spectrum ◽  
Pl Intensity ◽  
Methyl Phenyl

AbstractThe optical degradation of polysilane copolymer has been studied in spin cast thin films and solutions using light source of 325 nm wavelength. The room temperature photoluminescence (PL) spectrum of these films show a sharp emission at 368 nm when excited with a source of 325 nm. However, the PL intensity deteriorates with time upon light exposure. Further the causes of this degradation have been examined by characterizing the material for its transmission behaviour and changes occurring in molecular weight as analysed by GPC data.

Sulfonated Polyimide-Clay Thin Films for Energy Application

2016 ◽  
Vol 10 (999) ◽  
pp. 1-1 ◽  
Author(s):  
Farman Ali ◽  
Shaukat Saeed ◽  
Syed Shah ◽  
Fazal Rahim ◽  
Laurent Duclaux ◽  
...  
Keyword(s):  
Thin Films ◽  
Sulfonated Polyimide ◽  
Energy Application

scholarly journals Effect of the molecular weight on the depth profiling of PMMA thin films using low‐energy Cs + sputtering

2021 ◽  
Author(s):  
Amal Ben Hadj Mabrouk ◽  
Christophe Licitra ◽  
Antoine Chateauminois ◽  
Marc Veillerot
Keyword(s):  
Thin Films ◽  
Molecular Weight ◽  
Depth Profiling ◽  
Low Energy

Chemistry and Properties of Imide Oligomers from Phenylethynyl-Containing Diamines

2000 ◽  
Vol 12 (1) ◽  
pp. 213-223 ◽  
Author(s):  
J G Smith ◽  
J W Connell
Keyword(s):  
Thin Films ◽  
Molecular Weight ◽  
Research Effort ◽  
Average Molecular Weight ◽  
Number Average Molecular Weight ◽  
Similar Composition ◽  
Imide Oligomers ◽  
Calculated Number

As an extension of work on pendent phenylethynyl-containing imide oligomers, three new diamines containing pendent phenylethynyl groups were prepared and characterized. These diamines were used to prepare pendent and pendent and terminal phenylethynyl imide oligomers via the amide acid route in N-methyl-2-pyrrolidinone at a calculated number average molecular weight of 5000 g mol−1. The pendent phenylethynyl groups were randomly distributed along the oligomer backbone and provided a means of controlling the distance between reactive sites. The imide oligomers were characterized and thermally cured, and the cured polymers evaluated as thin films and compared with materials of similar composition prepared from 3,5-diamino-4′-phenylethynylbenzophenone. This work was performed as part of a continuing research effort to develop structural resins for potential aeronautical applications.

On the “Lamellar” Morphology of Poly(p-Phenylene Terephthalamide) and Poly(p-Phenylene Benzobisthiazole)

1988 ◽  
Vol 134 ◽  
Author(s):  
Eric J. Roche
Keyword(s):  
Thin Films ◽  
Molecular Weight ◽  
Quench Rate ◽  
Lamellar Morphology

ABSTRACTRow-nucleated structures in PPTA and PBZT thin films are compared and their dependence upon quench rate and molecular weight illustrated. It is proposed that the lamellar appearance of the morphology is due to a coherent periodic twisting of fibrillar ribbons. The role of crystallosolvate phases is discussed.

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