用于包括室温磷光在内的多色圆偏振发光的手性 MOF 的主客体化学,Advanced Functional Materials

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用于包括室温磷光在内的多色圆偏振发光的手性 MOF 的主客体化学
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2023-03-17 , DOI: 10.1002/adfm.202300105
Pengfu Gao _{1,

2} , Kun Zhang _{1,

3} , Dandan Ren _{1,

3} , Hui Liu _{1,

3} , Huiju Zhang ₂ , Hongru Fu _{1,

3} , Lufang Ma ₁ , Dongsheng Li ₃

Affiliation

通过可见和准确的结构利用分级手性系统中的手性转移和放大仍然是一个挑战。在此，通过网状化学合成了一对具有高刚性和高孔隙率的纯手性金属有机骨架 (MOF) DCF-12 和 LCF-12。有趣的是，这两种对映异构体可以充当纳米容器，其中可以通过原位封装引入四种发色团，包括吖啶、芘、9,10-双（苯基乙烯基）蒽（BPEA）和晕苯。重要的是，通过 X 射线衍射技术可以顺利获得所有客体负载 MOF 的精确单晶结构。它不仅清楚地揭示了通过空间手性转移从手性主体框架到非手性客体发射体的手性转移，而且还可以通过协同效应实现和调制圆偏振发光。不同寻常的是，pyrene@DCF-12 和 pyrene@LCF-12 均表现出迷人的多色可调室温磷光 (RTP) 和动态圆偏振发光。此外，pyrene@DCF-12和pyrene@LCD-12的RTP量子产率高达75.39%和73.43%，超过了大部分RTP材料。这些结果表明，手性 MOFs 可以作为一个准确的平台来研究手性转移和放大的机制，并促进 CPL 活性材料的发展。pyrene@DCF-12和pyrene@LCD-12的RTP量子产率高达75.39%和73.43%，超过了大部分RTP材料。这些结果表明，手性 MOFs 可以作为一个准确的平台来研究手性转移和放大的机制，并促进 CPL 活性材料的发展。pyrene@DCF-12和pyrene@LCD-12的RTP量子产率高达75.39%和73.43%，超过了大部分RTP材料。这些结果表明，手性 MOFs 可以作为一个准确的平台来研究手性转移和放大的机制，并促进 CPL 活性材料的发展。

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Host-Guest Chemistry of Chiral MOFs for Multicolor Circularly Polarized Luminescence Including Room Temperature Phosphorescence

Exploiting the chirality transfer and amplification in the hierarchical chiral systems by the visible and accurate structures is still a challenge. Herein, a pair of homochiral metal-organic frameworks (MOFs) DCF-12 and LCF-12 with high rigidity and high porosity are synthesized via reticular chemistry. Interestingly, these two enantiomers can act as nano-containers, in which four chromophores, covering acridine, pyrene, 9,10-Bis(phenylvinyl) anthracene (BPEA), and coronene can be introduced by in situ encapsulation. Importantly, the precise single crystal structures of all guest-loaded MOFs by X-ray diffraction technique can be obtained smoothly. It not only clearly reveals the chirality transfer from chiral host framework to achiral guest emitters through space chirality transfer, but also circularly polarized luminescence can be achieved and modulated through the synergistic effect. Extraordinarily, both pyrene@DCF-12 and pyrene@LCF-12 exhibit fascinating multi-color tunable room temperature phosphorescence (RTP) and dynamic circularly polarized luminescence. Besides, the RTP quantum yields of pyrene@DCF-12 and pyrene@LCD-12 are high up to 75.39% and 73.43%, which exceeds most of that of RTP materials. These results demonstrate that chiral MOFs can serve as an accurate platform to investigate the mechanism of chirality transfer and amplification and to prompt the development of CPL-active materials.

更新日期：2023-03-17

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