Tuning the Properties of Metal‐Organic Cages through Platinum Nanoparticle Encapsulation. Issue 39 (19th October 2022)

• Record Type: Journal Article
• Authors: Shi, Hua‐Tian; Luo, Shi‐Ting; Ma, Hui‐Rong; Yu, Weibin; Wei, Xianwen
• Is Part Of: ChemistrySelect. Volume 7:Issue 39(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-10-19
• Subjects: metal-organic cage -- host-guest system -- half-sandwich -- rhodium -- catalysis; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.202202940
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: Metal‐organic cages (MOCs) are promising candidates for drug deliveries, catalysis, and host‐guest systems. In addition, their own finite cavities can control to the sizes and shapes of metal nanoparticles (MNPs), leading to promote their catalytic performance. Herein, we used half‐sandwich rhodium moieties with pyridyl ligands through coordination‐driven self‐assembly strategy and bridged‐unit (tpphz)‐mediated host‐guest complex formation in concert to produce a sufficient cavity with about 2.0 nm of size that facilitate to prepare controllably sizes and shapes of MNPs. Specifically, a metal‐organic cage 1, containing robust ligands (tpeb) and bridged units, has been successfully synthesized and fully characterized by several spectroscopic techniques. Its final structure was unambiguously confirmed by single‐crystal X‐ray diffraction (SCXRD). The pyridyl ligand units of 1 underwent noncovalent complexation with platinum nanoparticles to yield a Pt‐NPs@1 under UV‐visible irradiation of K2 PtCl6 . Moreover, UV and CV were carried out to determine the redox properties of 1 and Pt‐NPs@1, finding that Pt‐NPs@1 has a good redox property. Therefore, the supramolecular composites were used as catalysis for degradation of dye stuffs in aqueous solution, exhibiting good selectivity and activity. Abstract : Metal‐organic cages (MOCs) are promising candidates for drug deliveries, catalysis, and host‐guest systems. Herein, we used half‐sandwich rhodium moieties with pyridyl ligands through coordination‐driven self‐assembly strategy and bridged‐unit (tpphz)‐mediated host‐guest complex formation in concert to produce a sufficient cavity that facilitate to prepare controllably sizes and shapes of MNPs.