Thermal stability of conductive charge transfer complexes of poly(4-vinylpyridine)-poly(dimethylsiloxane) block copolymers

1995 ◽  
Vol 34 (3) ◽  
pp. 345-352 ◽  
Author(s):  
N. Nugay ◽  
S. K���kyavuz ◽  
Z. K���kyavuz
Keyword(s):  
Thermal Stability ◽  
Charge Transfer ◽  
Block Copolymers ◽  
Charge Transfer Complexes ◽  
Thermal Stability Of

scholarly journals Molecular anchoring stabilizes low valence Ni(i)TPP on copper against thermally induced chemical changes

2020 ◽  
Vol 8 (26) ◽  
pp. 8876-8886
Author(s):  
Henning Maximilian Sturmeit ◽  
Iulia Cojocariu ◽  
Matteo Jugovac ◽  
Albano Cossaro ◽  
Alberto Verdini ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Charge Transfer ◽  
Copper Substrate ◽  
Surface Interaction ◽  
Chemical Changes ◽  
Thermally Induced ◽  
Thermal Stability Of ◽  
Molecule Surface

The strong molecule-surface interaction, followed by charge transfer at the interface, plays a fundamental role in the thermal stability of the layer by rigidly anchoring the porphyrin molecules to the copper substrate.

High thermal stability of block copolymer-capped Au and Cu nanoparticles

2014 ◽  
Vol 50 (80) ◽  
pp. 11919-11921 ◽  
Author(s):  
Iryna I. Perepichka ◽  
Mohamed A. Mezour ◽  
Dmitrii F. Perepichka ◽  
R. Bruce Lennox
Keyword(s):  
Thermal Stability ◽  
Block Copolymer ◽  
Block Copolymers ◽  
Metal Nanoparticles ◽  
High Temperatures ◽  
High Thermal Stability ◽  
Cu Nanoparticles ◽  
Prolonged Heating ◽  
Thermal Stability Of

Pyridine-containing block copolymers (PS-P4VP) can effectively stabilize metal nanoparticles which survive prolonged heating in solutions at high temperatures.

scholarly journals Comparing blends and blocks: Synthesis of partially fluorinated diblock polythiophene copolymers to investigate the thermal stability of optical and morphological properties

2016 ◽  
Vol 12 ◽  
pp. 2150-2163 ◽  
Author(s):  
Pierre Boufflet ◽  
Sebastian Wood ◽  
Jessica Wade ◽  
Zhuping Fei ◽  
Ji-Seon Kim ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Block Copolymer ◽  
Block Copolymers ◽  
Morphological Properties ◽  
Visible Absorption ◽  
Active Layers ◽  
Homopolymer Blends ◽  
The Impact ◽  
Thermal Stability Of

The microstructure of the active blend layer has been shown to be a critically important factor in the performance of organic solar devices. Block copolymers provide a potentially interesting avenue for controlling this active layer microstructure in solar cell blends. Here we explore the impact of backbone fluorination in block copolymers of poly(3-octyl-4-fluorothiophene)s and poly(3-octylthiophene) (F-P3OT-b-P3OT). Two block co-polymers with varying block lengths were prepared via sequential monomer addition under Kumada catalyst transfer polymerisation (KCTP) conditions. We compare the behavior of the block copolymer to that of the corresponding homopolymer blends. In both types of system, we find the fluorinated segments tend to dominate the UV–visible absorption and molecular vibrational spectral features, as well as the thermal behavior. In the block copolymer case, non-fluorinated segments appear to slightly frustrate the aggregation of the more fluorinated block. However, in situ temperature dependent Raman spectroscopy shows that the intramolecular order is more thermally stable in the block copolymer than in the corresponding blend, suggesting that such materials may be interesting for enhanced thermal stability of organic photovoltaic active layers based on similar systems.

scholarly journals Morphological Transformation and Photophysical Properties of Polyfluorene-Based Luminescent Rod-Coil Block Copolymers

2016 ◽  
Vol 2016 ◽  
pp. 1-8
Author(s):  
Yang-Yen Yu ◽  
Chun-Yen Huang
Keyword(s):  
Thermal Stability ◽  
Block Copolymers ◽  
Fluorescence Quenching ◽  
Fluorescence Spectra ◽  
Annealing Temperature ◽  
Photophysical Properties ◽  
Morphological Transformation ◽  
Solvent Selectivity ◽  
Thermal Stability Of

The morphologies, synthesis, and photophysical characterizations of poly[2,7-(9,9-dihexylfluorene)]-block-poly(2-(diethylamino)ethylmethacrylate) using amphiphilic rod-coil (PF-b-PDEAEMA) were demonstrated. The aggregation morphologies of PF13-b-PDEAEMA100 were manipulated by tuning the selectivity of mixed THF/methanol solvents with methanol contents ranging from 0 to 90 vol%. The morphological transformation of PF13-b-PDEAEMA100 caused significant changes in its photophysical properties, including absorption, fluorescence spectra, and fluorescence quenching. Moreover, the thermal stability of PF13-b-PDEAEMA100 was investigated by varying the annealing temperature. The results of the present study suggest that the solvent selectivity influences the photophysical properties and aggregation morphologies of rod-coil block copolymers in solid and solution states.

Effects of ozone in surface modification and thermal stability of SEBS block copolymers

2010 ◽  
Vol 95 (6) ◽  
pp. 975-986 ◽  
Author(s):  
Carmen Peinado ◽  
Teresa Corrales ◽  
Fernando Catalina ◽  
Sara Pedrón ◽  
Valentín Ruiz Santa Quiteria ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Surface Modification ◽  
Block Copolymers ◽  
Thermal Stability Of

Boosting the photovoltaic thermal stability of fullerene bulk heterojunction solar cells through charge transfer interactions

2017 ◽  
Vol 5 (45) ◽  
pp. 23662-23670 ◽  
Author(s):  
Carr Hoi Yi Ho ◽  
Huanyang Cao ◽  
Yong Lu ◽  
Tsz-Ki Lau ◽  
Sin Hang Cheung ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Solar Cells ◽  
Charge Transfer ◽  
Active Layer ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells ◽  
Charge Transfer Interaction ◽  
Thermal Stability Of

Charge transfer interaction of a donor polymer with an appropriate 9-fluorenylidene malononitrile derivative in the active layer leads to profoundly enhanced thermal stability of fullerene-based bulk heterojunction organic solar cells.

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