Phase Separation in the Melt and Confined Crystallization as the Key to Well-Ordered Microphase Separated Donor–Acceptor Block Copolymers

2013 ◽  
Vol 46 (11) ◽  
pp. 4403-4410 ◽  
Author(s):  
Ruth H. Lohwasser ◽  
Gaurav Gupta ◽  
Peter Kohn ◽  
Michael Sommer ◽  
Andreas S. Lang ◽  
...  
Keyword(s):  
Phase Separation ◽  
Block Copolymers ◽  
Confined Crystallization ◽  
Donor Acceptor

Enhancing Phase Separation and Photovoltaic Performance of All-Conjugated Donor–Acceptor Block Copolymers with Semifluorinated Alkyl Side Chains

2015 ◽  
Vol 48 (21) ◽  
pp. 7851-7860 ◽  
Author(s):  
Florian Lombeck ◽  
Hartmut Komber ◽  
Alessandro Sepe ◽  
Richard H. Friend ◽  
Michael Sommer
Keyword(s):  
Phase Separation ◽  
Block Copolymers ◽  
Photovoltaic Performance ◽  
Side Chains ◽  
Alkyl Side Chains ◽  
Donor Acceptor

Design and Synthesis of a Low Band Gap Conjugated Macroinitiator:  Toward Rod−Coil Donor−Acceptor Block Copolymers

2006 ◽  
Vol 39 (13) ◽  
pp. 4289-4297 ◽  
Author(s):  
Karin Van De Wetering ◽  
Cyril Brochon ◽  
Chheng Ngov ◽  
Georges Hadziioannou
Keyword(s):  
Block Copolymers ◽  
Band Gap ◽  
Low Band Gap ◽  
Design And Synthesis ◽  
Donor Acceptor

Tuning the morphology of the active layer of organic solar cells by spin 1/2 radicals

2019 ◽  
Vol 43 (35) ◽  
pp. 13998-14008
Author(s):  
Yuancheng Qin ◽  
Manman Li ◽  
Yu Xie ◽  
Xue Li ◽  
Chunming Yang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Phase Separation ◽  
Active Layer ◽  
Network Structure ◽  
Organic Solar Cells ◽  
Interpenetrating Network ◽  
Donor Acceptor

The morphology of the active layer, the formation of an interpenetrating network structure and the phase separation of donor–acceptor polymers has been improved by spin 1/2 radicals, and enhanced the PCEs of the organic solar cells.

scholarly journals Microphase separation of highly amphiphilic, low N polymers by photoinduced copper-mediated polymerization, achieving sub-2 nm domains at half-pitch

2019 ◽  
Vol 10 (46) ◽  
pp. 6254-6259 ◽  
Author(s):  
Ellis Hancox ◽  
Evelina Liarou ◽  
James S. Town ◽  
Glen R. Jones ◽  
Siân A. Layton ◽  
...  
Keyword(s):  
Phase Separation ◽  
Block Copolymers ◽  
Polyacrylic Acid ◽  
Microphase Separation

Fluoro-polyacrylic acid block copolymers with vary narrow dispersity are shown to have sub-2 nm domain sizes on phase separation.

Elastomeric Polyether-Ester Block Copolymers. I. Structure-Property Relationships of Tetramethylene Terephthalate/Polyether Terephthalate Copolymers

1977 ◽  
Vol 50 (4) ◽  
pp. 688-703 ◽  
Author(s):  
J. R. Wolfe
Keyword(s):  
Phase Separation ◽  
Melting Point ◽  
Block Copolymers ◽  
Low Temperature ◽  
Chain Length ◽  
Chemical Structure ◽  
High Water ◽  
Structure Property ◽  
Tear Strength ◽  
Structure Property Relationships

Abstract The properties of elastomeric tetramethylene terephthalate/polyether terephthalate copolymers have been related to the chemical structure, chain length, and concentration in the copolymers of the PTMEG-, PEG-, and PPG-derived polyether units. Low-temperature properties and tear strength are dependent on all three polyether-related variables. Melting point, hardness, and stress at 100% elongation appear to be independent of polyether structure. Polyether glycols of low MW volatilize during copolymer preparation. High-MW polyethers tend to crystallize when present in the copolymers. Polyether glycols of intermediate MW (∼ 1000) yield copolymers with the best resistance to low-temperature stiffening. Copolymer synthesis is most difficult with PPG as the polyether glycol. Inherent viscosities are low, and phase separation occurs at lower polyether MW than with PTMEG or PEG. The PEG-based copolymers exhibit high water swell, particularly at intermediate and high PEG MW. The PTMEG-based copolymers are easiest to synthesize and exhibit the best overall combination of properties.

Chain Orientation in Block Copolymers Exhibiting Cylindrically Confined Crystallization

1998 ◽  
Vol 31 (15) ◽  
pp. 4891-4898 ◽  
Author(s):  
Daniel J. Quiram ◽  
Richard A. Register ◽  
Gary R. Marchand ◽  
Douglas H. Adamson
Keyword(s):  
Block Copolymers ◽  
Chain Orientation ◽  
Confined Crystallization

Functionalizing benzothiadiazole with non-conjugating ester groups as side chains in a donor–acceptor polymer improves solar cell performance

2019 ◽  
Vol 43 (10) ◽  
pp. 4242-4252
Author(s):  
Radhakrishna Ratha ◽  
Mohammad Adil Afroz ◽  
Ritesh Kant Gupta ◽  
Parameswar Krishnan Iyer
Keyword(s):  
Phase Separation ◽  
Solar Cell ◽  
Conjugated Polymers ◽  
Active Layer ◽  
Polymer Solar Cell ◽  
Bulk Heterojunction ◽  
Side Chain ◽  
Solar Cell Performance ◽  
Donor Acceptor ◽  
Chain Ester

Side chain ester substitution on donor–acceptor based conjugated polymers used as solar harvesters in a bulk-heterojunction (BHJ) polymer solar cell (PSC) can improve harvesting properties, phase separation in the active layer and PSC performance.

Development of Flexible LEO-Resistant PI Films for Space Applications Using a Self-Healing Mechanism by Surface-Directed Phase Separation of Block Copolymers

2010 ◽  
Vol 2 (8) ◽  
pp. 2218-2225 ◽  
Author(s):  
Hartmut R. Fischer ◽  
Karin Tempelaars ◽  
Aat Kerpershoek ◽  
Theo Dingemans ◽  
M. Iqbal ◽  
...  
Keyword(s):  
Phase Separation ◽  
Block Copolymers ◽  
Self Healing ◽  
Space Applications
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