Asymmetric and Symmetric Dipole−Dipole Interactions Drive Distinct Aggregation and Emission Behavior of Intramolecular Charge-Transfer Molecules
Asymmetric and Symmetric Dipole−Dipole Interactions Drive Distinct Aggregation and Emission Behavior of Intramolecular Charge-Transfer Molecules
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DOI：
10.1021/jp809258h
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发表时间：
2009-03
影响因子：
3.7
通讯作者：
Jialiang Xu;L. Wen;Weidong Zhou;J. Lv;Yanbing Guo;Mei Zhu;Huibiao Liu;Yuliang Li;Lei Jiang-Lei
中科院分区：
文献类型：
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作者：
Jialiang Xu;L. Wen;Weidong Zhou;J. Lv;Yanbing Guo;Mei Zhu;Huibiao Liu;Yuliang Li;Lei Jiang-Lei
合成了三种含二硫杂环戊烯-硝基芴强推拉二元组的分子内电荷转移（ICT）化合物，并将其组装成形态可控的超分子自组装体.虽然化合物的化学结构差异很小，但它们表现出相当不同的自组装行为，由不对称或对称的偶极-偶极相互作用驱动。的微观尺寸的超结构的形态可以很容易地通过改变主要的操作参数和观察到的形态过渡到动力学上稳定的超架构。化合物的紫外维斯光谱是聚集依赖性的，并且观察到三硝基取代的类似物（1a）具有AIE活性。这种有序的分级结构超结构的红光发射特性使其在有机发光器件、分子探针、生物标记等领域具有潜在的应用前景。
Three intramolecular charge-transfer (ICT) compounds with dithiole−nitrofluorene strong push−pull diads have been synthesized and fabricated into well-formed and morphology-controllable supramolecular self-assemblies. Although the difference in chemical structures of the compounds is slight, they exhibit rather distinct self-assembly behaviors driven by asymmetric or symmetric dipole−dipole interactions. The morphologies of the microsized suprastructures can be easily tuned by changing main operation parameters and the morphologies are observed to transit from kinetically to thermodynamically stable supraarchitectures. UV−vis spectra of the compounds are aggregation-dependent and the trinitro-substituted analogue (1a) is observed to be AIE active. The red emitting behavior of the well-formed hierarchical structured supraarchitectures endows the material with potential applications in the fields of OLEDs, molecular probes, biolabels, and so on.