Precisely controlling self‐assembly behavior and micro/nanostructure morphology of conjugated materials is significant for constructing optoelectronic devices. Inspired by natural functional materials, molecular stereoisomerism strategy (MSS) is an effective and convenient means to tune their molecular arrangement and macroscopic property of conjugated materials. Herein, a supramolecular chiral difluorenols, 9,9′‐diphenyl‐9H,9′H‐[2,2′‐bifluorene]‐9,9′‐diol (DPFOH), is set as a desirable model to reveal the diastereomeric effects of conjugated molecules toward controlling the micro/nanostructure morphology and optoelectronic behavior for deep‐blue organic laser. Two diastereomers, raceme (rac)‐ and mesomer (meso)‐DPFOH, are obtained and unambiguously elucidated by X‐ray crystallography. It is common sense to observe the slight diastereomeric effects on photophysical properties and electrochemical characteristics in solution or pristine film state for the isotropic phase. Interestingly, as a consequent of the disparate multi‐dimensional intermolecular interaction, rac‐DPFOH molecule can self‐assemble into 1D rod‐shaped but rectangular plate‐shaped microcrystals for meso‐DPFOH. Impressively, rac‐DPFOH microrod presents a well‐defined emission with an excellent ultraviolet microlasing behavior at 398 nm, whereas the 2D microplate of meso‐DPFOH show a broad emission centered at 420 nm without gain processing. Therefore, MSS provides a new approach to design conjugated molecules and tune superstructure morphology for optoelectronic applications.

中文翻译：

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非对映异构体诱导的共轭分子的形态可调谐自组装有机微晶，用于紫外激光

精确控制共轭材料的自组装行为和微观/纳米结构形态对于构建光电器件具有重要意义。受天然功能材料的启发，分子立体异构策略（MSS）是一种有效且方便的方法，可调节其分子排列和共轭材料的宏观性能。在此，超分子手性difluorenols，9,9'-二苯基-9- ħ，9' ħ - [2,2'-二芴] -9,9'-二醇（DPFOH），被设定为所希望的模型以显示非对映异构分子对深蓝色有机激光的微观/纳米结构形态和光电行为的控制 两种非对映异构体，消旋体（rac）和中观异构体（中观）-DPFOH已获得，并通过X射线晶体学明确阐明。观察各向同性相在溶液或原始膜状态下对光物理性质和电化学特性的轻微非对映异构作用是常识。有趣的是，由于多维的分子间相互作用，rac -DPFOH分子可以自组装为一维棒状但矩形的板状微晶，用于内消旋-DPFOH。令人印象深刻的是，rac -DPFOH微棒呈现清晰的发射，并在398 nm处具有出色的紫外微激光行为，而二维的中观微孔板‐DPFOH在不进行增益处理的情况下，显示出以420 nm为中心的宽发射。因此，MSS提供了一种新的方法来设计共轭分子并调整用于光电应用的超结构形态。