Journal ArticleDOI
Self-organization of supramolecular helical dendrimers into complex electronic materials
Virgil Percec,Martin Glodde,Tushar K. Bera,Yoshiko Miura,Irina Shiyanovskaya,Kenneth D. Singer,Venkatachalapathy S. K. Balagurusamy,Paul A. Heiney,Ingo Schnell,Almut Rapp,Hans Wolfgang Spiess,Steven D. Hudson,H. Duan +12 more
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TLDR
This work finds that attaching conducting organic donor or acceptor groups to the apex of the dendrons leads to supramolecular nanometre-scale columns that contain in their cores π-stacks of donors, acceptors or donor–acceptor complexes exhibiting high charge carrier mobilities.Abstract:
The discovery of electrically conducting organic crystals1 and polymers1,2,3,4 has widened the range of potential optoelectronic materials5,6,7,8,9, provided these exhibit sufficiently high charge carrier mobilities6,7,8,9,10 and are easy to make and process. Organic single crystals have high charge carrier mobilities but are usually impractical11, whereas polymers have good processability but low mobilities1,12. Liquid crystals exhibit mobilities approaching those of single crystals and are suitable for applications13,14,15,16,17,18, but demanding fabrication and processing methods limit their use. Here we show that the self-assembly of fluorinated tapered dendrons can drive the formation of supramolecular liquid crystals with promising optoelectronic properties from a wide range of organic materials. We find that attaching conducting organic donor or acceptor groups to the apex of the dendrons leads to supramolecular nanometre-scale columns that contain in their cores π-stacks of donors, acceptors or donor–acceptor complexes exhibiting high charge carrier mobilities. When we use functionalized dendrons and amorphous polymers carrying compatible side groups, these co-assemble so that the polymer is incorporated in the centre of the columns through donor–acceptor interactions and exhibits enhanced charge carrier mobilities. We anticipate that this simple and versatile strategy for producing conductive π-stacks of aromatic groups, surrounded by helical dendrons, will lead to a new class of supramolecular materials suitable for electronic and optoelectronic applications.read more
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Journal ArticleDOI
Macrosurfactant-mediated, aminopolycarboxy-acid-decorated open-cellular adsorbent for removing metal micropollutants from water
Shiqi Weng,Ming Jin,Decheng Wan +2 more
TL;DR: In this article, a dendritic polyamine macrosurfactant was used to stabilize a water-in-oil high internal phase emulsion (HIPE), while a linear PEI did so poorly.
Journal ArticleDOI
Optically active mesogenic triphenylenedicarboxyimides: Effects of axially connected aromatic ring at the stereogenic center on liquid crystal and self-assembly properties
Xuelin Xia,Caichen Zhao,Hongchuang Xu,Wen-Hao Yu,S.-K. Xiang,Lai-Cai Li,Ke-Qing Zhao,Chun Feng,Aiqin Wang +8 more
TL;DR: In this article , the synthesis and self-assembly behavior of a series of ten optically active triphenylenedicarboxyimide derivatives with a stereogenic center attached to the imide nitrogen carrying an end aromatic ring was described.
Book ChapterDOI
Transport and electro-optical properties in polymeric self-assembled systems
Olli Ikkala,Gerrit ten Brinke +1 more
Journal ArticleDOI
Crowding-Induced Unconventional Phase Behaviors in Dendritic Rodlike Molecules via Side-Chain Engineering
Xiaobo Liu,Ruimeng Zhang,Ruimeng Zhang,Yu Shao,Liguo Xu,Guorui He,Jiahao Huang,Jiahao Huang,Zi-Hao Guo,Wen-Bin Zhang,Wen Tang,Kan Yue +11 more
TL;DR: A simple yet highly efficient strategy to tune the molecular conformation of dendritic rodlike molecules by adjusting the length of alkyl side chains tethered to the rods and provides a practical platform for further investigation of unconventional structure formation and phase transitions in soft matter.
Journal ArticleDOI
Influence of the side group shape on the arrangement of liquid‐crystalline polyethers obtained by ring opening polymerization of oxiranes
TL;DR: In this article, a family of benzylglycidylether derivatives with 4-dodecyloxybenzyloxy groups at the 4-, 3, 5-, and 3, 4, 5- positions of the aromatic ring was synthesized and characterized.
References
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Integrated Optoelectronic Devices Based on Conjugated Polymers
TL;DR: An all-polymer semiconductor integrated device is demonstrated with a high-mobility conjugated polymer field-effect transistor driving a polymer light-emitting diode (LED) of similar size, which represents a step toward all- polymer optoelectronic integrated circuits such as active-matrix polymer LED displays.
Journal ArticleDOI
Self-Organized Discotic Liquid Crystals for High-Efficiency Organic Photovoltaics
Lukas Schmidt-Mende,Andreas Fechtenkötter,Klaus Müllen,Ellen Moons,Richard H. Friend,J. D. MacKenzie +5 more
TL;DR: Self-organization of liquid crystalline and crystalline-conjugated materials has been used to create, directly from solution, thin films with structures optimized for use in photodiodes, demonstrating that complex structures can be engineered from novel materials by means of simple solution-processing steps and may enable inexpensive, high-performance, thin-film photovoltaic technology.