Temperature-Dependent Multidimensional Self-Assembly of Polyphenylene-Based “Rod–Coil” Graft Polymers

Huang, Yinjuan; Mai, Yiyong; Yang, Xiangwen; Beser, Uliana; Liu, Junzhi; Zhang, Fan; Yan, Deyue; Müllen, Kläus; Feng, Xinliang

doi:10.1021/jacs.5b07487

Cited by 64 publications

(73 citation statements)

References 25 publications

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“…This question can be better discussed, if the occurrence of π–π interactions and the structures of consequential assemblies can be varied by the desolvation conditions. This research is rarely reported, because π–π interactions in many systems are complicated by other forces and not sensitive enough to solution conditions for the study …”

Section: Methodsmentioning

confidence: 99%

The Effect of Solution Conditions on the Driving Forces for Self‐Assembly of a Pyrene Molecule

Shi

Liu²,

Wang³

2017

Chemistry A European J

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Fe(CO){CO(CH ) CH -pyrene}(Cp)(PPh ) (Fp-pyrene) is soluble in DMSO and THF, but insoluble in water, methanol, and ethanol. The hydrophobic force drives the molecules' assembly into vesicles in THF/water. The π-π interaction of the pyrene groups subsequently occurred within the vesicular membrane. The assembly, however, is driven by the π-π interaction in DMSO/water (water content: 40-80 vol %) into membranes, which is attributed to the relatively higher degree of de-solvation (δ) of pyrene in DMSO. Further increase in δ (DMSO/90 vol % water) suppresses the π-π interaction and spherical particles are formed. On the other hand, the supersaturated solutions were prepared via a cycle of heating and cooling of Fp-pyrene in methanol or ethanol. Fp-pyrene aggregates into particles without the π-π interaction in the solutions with a lower degree of supersaturation (σ). In contrast, a higher σ induces the π-π interaction, which drives the assembly into nanotapes. The π-π interaction is a conditional effect depending on the solution conditions, which can be adjusted for the synthesis of nanostructures assembled from the same aromatic molecule.

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Section: Methodsmentioning

confidence: 99%

The Effect of Solution Conditions on the Driving Forces for Self‐Assembly of a Pyrene Molecule

Shi

Liu²,

Wang³

2017

Chemistry A European J

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“…Introduction of pendant moieties onto conjugated polymers to form graft copolymers is an effective pathway to improve their solubility and tailor their optoelectronic properties, which also provides opportunities to study their self‐assembly behavior and physiochemical properties of their self‐assembled structures in solution . Very recently, our group synthesized a novel type of rod‐coil graft copolymers containing an expanded poly‐ para ‐phenylene backbone grafted with PEO side chains (Fig.…”

Section: Self‐assembly Of Amphiphilic Rod‐coil Graft Copolymersmentioning

confidence: 99%

“…Very recently, our group synthesized a novel type of rod‐coil graft copolymers containing an expanded poly‐ para ‐phenylene backbone grafted with PEO side chains (Fig. ) . Featuring a unique structure with a short average distance between neighboring PEO chains on the conjugated backbone, these graft copolymers exhibited temperature‐dependent 1D and 2D hierarchical self‐assembly behavior in THF/H 2 O solution above and below the crystallization temperature of the PEO chains, respectively.…”

Section: Self‐assembly Of Amphiphilic Rod‐coil Graft Copolymersmentioning

confidence: 99%

Recent advances in the solution self‐assembly of amphiphilic “rod‐coil” copolymers

Huang

et al. 2017

J. Polym. Sci. Part A: Polym. Chem.

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Solution self‐assembly of amphiphilic “rod‐coil” copolymers, especially linear block copolymers and graft copolymers (also referred to as polymer brushes), has attracted considerable interest, as replacing one of the blocks of a coil‐coil copolymer with a rigid segment results in distinct self‐assembly features compared with those of the coil‐coil copolymer. The unique interplay between microphase separation of the rod and coil blocks with great geometric disparities can lead to the formation of unusual morphologies that are distinctly different from those known for coil‐coil copolymers. This review presents the recent achievements in the controlled self‐assembly of rod‐coil linear block copolymers and graft copolymers in solution, focusing on copolymer systems containing conjugated polymers, liquid crystalline polymers, polypeptides, and polyisocyanates as the rod segments. The discussions concentrate on the principle of controlling over the morphology of rod‐coil copolymer assemblies, as well as their distinctive optical and optoelectronic properties or biocompatibility and stimuli‐responsiveness, which afford the assemblies great potential as functional materials particularly for optical, optoelectronic and biological applications. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017, 55, 1459–1477

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“…In addition, helical morphologies are of fundamental scientific interest because a better understanding of physical and chemical behaviors of helical structures can provide crucial clues to understanding biological systems. Nevertheless, the realization of helically patterned, synthetic multicompartmental microbuilding blocks have been limited to a small number of techniques, such as E‐beam lithography15 or block copolymer self‐assembly methods 16…”

Section: Introductionmentioning

confidence: 99%

Compartmentalized Microhelices Prepared via Electrohydrodynamic Cojetting

et al. 2018

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Anisotropically compartmentalized microparticles have attracted increasing interest in areas ranging from sensing, drug delivery, and catalysis to microactuators. Herein, a facile method is reported for the preparation of helically decorated microbuilding blocks, using a modified electrohydrodynamic cojetting method. Bicompartmental microfibers are twisted in situ, during electrojetting, resulting in helical microfibers. Subsequent cryosectioning of aligned fiber bundles provides access to helically decorated microcylinders. The unique helical structure endows the microfibers/microcylinders with several novel functions such as translational motion in response to rotating magnetic fields. Finally, microspheres with helically patterned compartments are obtained after interfacially driven shape shifting of helically decorated microcylinders.

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Temperature-Dependent Multidimensional Self-Assembly of Polyphenylene-Based “Rod–Coil” Graft Polymers

Cited by 64 publications

References 25 publications

The Effect of Solution Conditions on the Driving Forces for Self‐Assembly of a Pyrene Molecule

The Effect of Solution Conditions on the Driving Forces for Self‐Assembly of a Pyrene Molecule

Recent advances in the solution self‐assembly of amphiphilic “rod‐coil” copolymers

Compartmentalized Microhelices Prepared via Electrohydrodynamic Cojetting

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