Organic cage inclusion crystals exhibiting guest-enhanced multiphoton harvesting

Ning, Guo-Hong, Cui, Peng, Sazanovich, Igor V, Pegg, James T, Zhu, Qiang, Pang, Zhongfu, Wei, Rong-Jia, Towrie, Mike, Jelfs, Kim E, Little, Marc A
et al (show 1 more authors) (2021) Organic cage inclusion crystals exhibiting guest-enhanced multiphoton harvesting. CHEM, 7 (11). pp. 3157-3170.

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Host-guest complexation is an important supramolecular route to materials. Clear design rules have been developed for complexation in solution. This has proved more challenging for solid-state host-guest co-crystals because they often exhibit polymorphism, leading many researchers to focus instead on bonded frameworks, such as metal-organic frameworks. Here, we report an anthracene-based organic cage (1) that forms isoskeletal host-guest co-crystals with five similarly sized solid organic guests. The co-crystals were designed using inexpensive computational methods to identify appropriate guests that have packing coefficients (PCs) ranging from 44% to 50%, coupled with consideration of the guest shape. By complexing highly emissive BODIPY guests into the host structure, we enhanced its two-photon excited photoluminescent properties by a factor of six. Our crystal design approach was also transferrable to hard-to-design ternary organic crystals that were accessed by inserting specific guests into different sized voids in the host.

Item Type: Article
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 26 Oct 2021 08:19
Last Modified: 18 Jan 2023 21:25
DOI: 10.1016/j.chempr.2021.09.016
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