Hydrogen-Bonded Polymers with Bent-Shaped Side Chains and Poly(4-vinylpridine) Backbone: Phase Behavior and Thin Film Morphologies

2014 ◽  
Vol 47 (12) ◽  
pp. 3917-3925 ◽  
Author(s):  
Xiaoshan Liu ◽  
Xiaofang Chen ◽  
Jingkui Wang ◽  
Gang Chen ◽  
Hailiang Zhang
Keyword(s):  
Thin Film ◽  
Phase Behavior ◽  
Side Chains ◽  
Hydrogen Bonded

Smectic Demixing in the Phase Behavior and Self-Assembly of a Hydrogen-Bonded Polymer with Mesogenic Side Chains

2010 ◽  
Vol 43 (16) ◽  
pp. 6646-6654 ◽  
Author(s):  
Manesh Gopinadhan ◽  
Evan S. Beach ◽  
Paul T. Anastas ◽  
Chinedum O. Osuji
Keyword(s):  
Phase Behavior ◽  
Self Assembly ◽  
Side Chains ◽  
Hydrogen Bonded

Stability of Cyclic β-Hairpins:  Asymmetric Contributions from Side Chains of a Hydrogen-Bonded Cross-Strand Residue Pair

2003 ◽  
Vol 125 (2) ◽  
pp. 388-395 ◽  
Author(s):  
Stephen J. Russell ◽  
Tamas Blandl ◽  
Nicholas J. Skelton ◽  
Andrea G. Cochran
Keyword(s):  
Residue Pair ◽  
Side Chains ◽  
Hydrogen Bonded

scholarly journals Variation of the Side Chain Branch Position Leads to Vastly Improved Molecular Weight and OPV Performance in 4,8-dialkoxybenzo[1,2-b:4,5-b′]dithiophene/2,1,3-benzothiadiazole Copolymers

2011 ◽  
Vol 2011 ◽  
pp. 1-10 ◽  
Author(s):  
Robert C. Coffin ◽  
Christopher M. MacNeill ◽  
Eric D. Peterson ◽  
Jeremy W. Ward ◽  
Jack W. Owen ◽  
...  
Keyword(s):  
Thin Film ◽  
Molecular Weight ◽  
Thin Film Transistor ◽  
Power Conversion ◽  
Hole Mobility ◽  
Side Chain ◽  
Side Chains ◽  
Absorption Profile ◽  
Polymer Backbone ◽  
Chain Branch

Through manipulation of the solubilizing side chains, we were able to dramatically improve the molecular weight(Mw)of 4,8-dialkoxybenzo[1,2-b:4,5-b′]dithiophene (BDT)/2,1,3-benzothiadiazole (BT) copolymers. When dodecyl side chains (P1) are employed at the 4- and 8-positions of the BDT unit, we obtain a chloroform-soluble copolymer fraction withMwof 6.3 kg/mol. Surprisingly, by moving to the commonly employed 2-ethylhexyl branch (P2),Mwdecreases to 3.4 kg/mol. This is despite numerous reports that this side chain increases solubility andMw. By moving the ethyl branch in one position relative to the polymer backbone (1-ethylhexyl,P3),Mwis dramatically increased to 68.8 kg/mol. As a result of thisMwincrease, the shape of the absorption profile is dramatically altered, withλmax= 637 nm compared with 598 nm forP1and 579 nm forP2. The hole mobility as determined by thin film transistor (TFT) measurements is improved from~1×10−6 cm2/Vs forP1andP2to7×10−4 cm2/Vs forP3, while solar cell power conversion efficiency in increased to2.91%forP3relative to0.31%and0.19%forP1andP2, respectively.

Polystyrene-poly(2-ethylhexylmethacrylate) block copolymers: Synthesis, bulk phase behavior, and thin film structure

Polymer ◽  
2014 ◽  
Vol 55 (8) ◽  
pp. 2059-2067 ◽  
Author(s):  
Ha-Kyung Kwon ◽  
Vanessa E. Lopez ◽  
Raleigh L. Davis ◽  
So Youn Kim ◽  
Adam B. Burns ◽  
...  
Keyword(s):  
Thin Film ◽  
Block Copolymers ◽  
Phase Behavior ◽  
Film Structure ◽  
Bulk Phase ◽  
Thin Film Structure

Prediction of the Phase Behavior of Hydrogen-Bonded Polymer Blends

ChemInform ◽  
2006 ◽  
Vol 37 (50) ◽  
Author(s):  
Michael M. Coleman ◽  
Paul C. Painter
Keyword(s):  
Polymer Blends ◽  
Phase Behavior ◽  
Hydrogen Bonded
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