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[Mater. Chem. Front.] Fluorophore core-engineered supramolecular discotic columnar liquid crystals with tunable fluorescent behavior
作者:Bin Mu, Xuhong Quan, Yu Zhao, Xun Li and Wei Tian *
關鍵字:Liquid crystals,Fluorophore core-engineered,tunable fluorescent behavior,
論文來源:期刊
具體來源:Mater. Chem. Front., 2019, 3, 1671-1677
發表時間:2019年

Achieving hydrogen-bonded supramolecular discotic columnar liquid crystals with tunable fluorescent behavior, especially in the solid state, is still a substantial challenge due to the absence of suitable fluorophore components. To this end, we herein report a function-directing expansion based on a C3-symmetric tris(imidazole-2-yl)benzene skeletal structure to obtain various fluorophore cores, which are either fused with p-expanded benzene or naphthalene rings, or substituted with tolyl groups twisted out of the core plane. By means of complementary hydrogen-bonding interactions with alkylated benzoic acids, well-organized supramolecular discotic columnar liquid crystals can be formed and readily aligned in a homeotropic fashion. Effiffifficient color-tunable fluorescent behavior, ranging from blue, cyan, green to yellow emission, is achieved with these liquid crystals even in the solid state, which manifest a close correlation with the difffferent structural parameters shown by each of the designed cores, and also the assembled structures of the resultant complexes. Our study will lead to the design of new functional supramolecular liquid crystals that can potentially be applicable as anisotropic optoelectronic materials.



全文鏈接:https://pubs.rsc.org/en/content/articlelanding/2019/QM/C9QM00337A

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