Guest effects on crystal structure and phosphorescence of a Cu6L3 prismatic cage,Inorganic Chemistry Frontiers

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Guest effects on crystal structure and phosphorescence of a Cu6L3 prismatic cage
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2020/02/10 , DOI: 10.1039/c9qi01578g
Zhi-Chun Shi _{1,

2,

3,

4,

5} , Wei Chen _{4,

5,

6,

7} , Shun-Ze Zhan _{4,

5,

6,

7} , Mian Li _{4,

5,

6,

7} , Mo Xie _{1,

2,

3,

4} , Yan Yan Li _{1,

2,

3,

4} , Seik Weng Ng _{8,

9,

10} , Yong-Liang Huang _{1,

2,

3,

4} , Zhiyin Zhang _{1,

2,

3,

4} , Guo-Hong Ning _{1,

2,

3,

4} , Dan Li _{1,

2,

3,

4}

Affiliation

Coordination cages with a nanocavity can encapsulate various guests, which allows modulation of the physical and chemical properties of the host–guest inclusion complexes. In this work, we designed and prepared a phosphorescence Cu₆L₃ trigonal prismatic cage, which accommodates a series of aromatic guest molecules. Single crystal X-ray analysis revealed that the intermolecular Cu⋯Cu distance can be mediated by changing the volume of the guests. Moreover, the host–guest charge-transfer interactions can be also fine-tuned via tailoring the ionization potential of guests. Consequently, we have observed the guest-induced photoluminescence properties change including a gradual red shift of the maximum emission peak and a linear relationship between the quantum yield and ionization potential of guests.

中文翻译：

客体对Cu6L3棱柱形笼的晶体结构和磷光的影响

具有纳米腔的配位笼可以封装各种客体，从而可以调节宿主-客体包合物的物理和化学性质。在这项工作中，我们设计并制备了磷光Cu ₆ L ₃三角棱柱笼，该笼可容纳一系列芳族客体分子。单晶X射线分析表明，分子间Cu⋯Cu距离可以通过改变客体的体积来调节。此外，主客之间的电荷转移相互作用也可以通过调整客人的电离潜力。因此，我们观察到了客体诱导的光致发光特性的变化，包括最大发射峰的逐渐红移以及客体的量子产率和电离势之间的线性关系。

更新日期：2020-03-19

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