In: Advanced Materials, 2010, vol. 22, no. 6, p. 763-768
A new polymer blend formed by poly(3-hexylthiophene)-poly(4-vinylpyridine) (P3HT- P4VP) block copolymers and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) is reported. The P4VP and PCBM are mixed together by weak supramolecular interactions, and the resulting materials exhibit microphase separated morphologies of electron-donor and electron-acceptor rich domains. The properties of the blend,...
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In: Journal of Applied Polymer Science, 2008, vol. 110, no. 6, p. 3664 - 3670
Atom transfer radical polymerization (ATRP) was used as a versatile route to well-defined poly(diethylhexyl-p-phenylenevinylene-b-styrene) (PPV-b-PS) semiconducting block copolymers. For this purpose, original conjugated macroinitiators were synthesized from DEH-PPV and further used for the copolymerization reaction. The microphase-separated morphologies obtained with the semiconducting PPV-b-PS...
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In: Macromolecular Symposia, 2008, vol. 268, no. 1, p. 28-32
Two different approaches to obtain electron donor-acceptor interfaces via self-assembly of block copolymer systems are discussed, where the donor domains are formed by a π-conjugated rod-like polymer and the acceptor domains result from a coiled polymer modified by C₆₀ fullerenes. In the first strategy, C₆₀ is chemically grafted onto the coil polymer, typically a statistical...
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In: Macromolecules, 2007, vol. 40, no. 19, p. 6990 -6997
We describe the synthesis, the morphology, and self-assembly behavior of semiconducting poly(4-vinylpyridine-b-diethylhexyloxy-p-phenylenevinylene) (P4VP-b-PPV) rod-coil block copolymer systems. Three different block copolymers with 55%, 80%, and 88% coil volume fraction were synthesized by convergent anionic polymerization in THF using lithium α-methylstyrene as initiator....
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In: Macromolecules, 2007, vol. 40, no. 9, p. 3277 -3286
The morphology arising from the self-assembly of π-conjugated poly(diethylhexyloxy-p-phenylenevinylene) rod homopolymers (PPV) and poly(diethylhexyloxy-p-phenylenevinylene)-polystyrene (PPV-PS) rod-coil block copolymers is described. Two PPV-PS block copolymers, one with low rod volume fraction (~17%) and the other with high volume fraction (~50%), were synthesized by convergent...
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