A series of binary charge-transfer (CT) cocrystals and microtubes involving 9-formylcarbazole, 9-acetylcarbazole, 1-formylpyrene, and 1-acetylpyrene as CT donors and 1,2,4,5-tetracyanobenzene as CT acceptor were obtained via molecular self-assembly. Crystal structural analysis revealed that these organic cocrystals were constructed with D··A··D··A··D (Ia and IIb) and DAD···DAD (Ib and IIa) modes through π···π, hydrogen bond, C–H···π, and C–N···π interactions. Infrared spectroscopy, thermal property profiles, and solid-state absorption spectroscopy were recorded to understand physicochemical properties of all CT materials. The morphology and structure of microtubes were detected by scanning electron microscopy and powder X-ray diffraction. Investigation of luminescent properties shows that a stepwise increase of luminescent efficiency from pristine donors to microtubes can be realized. These results provide an effective way for exploring new luminescent materials.

中文翻译：

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高效的电荷转移有机共晶体发光微管，涉及1,2,4,5-三苯甲基，咔唑衍生物和P衍生物

通过分子获得了一系列的二元电荷转移（CT）共晶体和微管，涉及9-甲酰基咔唑，9-乙酰基咔唑，1-甲酰基py和1-乙酰基as作为CT供体，以及1,2,4,5-四氰基苯作为CT受体。自组装。晶体结构分析表明，这些有机共晶体由D··A··D··A··D（Ia和IIb）和DAD···DAD（Ib和IIa）构成）模式通过π··π，氢键，CH···π和CN····π相互作用。记录红外光谱，热性质曲线和固态吸收光谱，以了解所有CT材料的理化性质。通过扫描电子显微镜和粉末X射线衍射检测微管的形态和结构。发光特性的研究表明，可以实现从原始供体到微管的发光效率的逐步提高。这些结果为探索新型发光材料提供了有效的途径。