NDLI: Controlling the morphology and crystallization of a thiophene-based all-conjugated diblock copolymer by solvent blending.

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Controlling the morphology and crystallization of a thiophene-based all-conjugated diblock copolymer by solvent blending.

Content Provider	Semantic Scholar
Author	Cui, Huina Yang, Xiubao Peng, Juan Qiu, Feng
Copyright Year	2017
Abstract	We report the crystallization and microphase separation behavior of an all-conjugated poly(3-hexylthiophene)-b-poly[3-(6-hydroxy)hexylthiophene] (P3HT-b-P3HHT) block copolymer in mixed solvents and demonstrate how the conformations of P3HT and P3HHT chains influence the photophysical properties of the copolymer. It is shown that the balance among π-π stacking of P3HT, P3HHT and microphase separation of the copolymer can be dynamically shifted by controlling the rod-rod interactions of the copolymer via changing the block ratio and solvent blending. A series of nanostructures such as well-ordered nanofibers, spheres and lamellar structures are formed and their formation mechanisms and kinetics are discussed in detail. The variations in P3HT-b-P3HHT conformations are concomitant with a hybrid photophysical property depending on the competition between intrachain and interchain excitonic coupling, resulting in the transformation between J- and H-aggregation. Overall, this work demonstrates how the P3HT-b-P3HHT conformations crystallize and phase-separate in the solution and solid state, and the correlation between their structures and photophysical properties, which improves our understanding of all-conjugated rod-rod block copolymer systems.
Starting Page	5261
Ending Page	5268
Page Count	8
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.rsc.org/suppdata/c7/sm/c7sm01126a/c7sm01126a1.pdf
PubMed reference number	28702655v1
Alternate Webpage(s)	https://doi.org/10.1039/c7sm01126a
DOI	10.1039/c7sm01126a
Journal	Soft matter
Volume Number	13
Issue Number	31
Language	English
Access Restriction	Open
Subject Keyword	Copolymer Crystallization Immunostimulating conjugate (antigen) Nanofibers Nanostructured Materials Order (action) Thiophene
Content Type	Text
Resource Type	Article

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