Journal
CHEMICAL SCIENCE
Volume 6, Issue 12, Pages 7105-7111Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5sc02216a
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Funding
- Hong Kong Research Grants Council [HKU 7008/09P]
- University Grants Committee Areas of Excellence Scheme [AoE/P-03/08]
- National Key Basic Research Program of China [2013CB834802]
- NSFC/RGC Joint Research Scheme [N_HKU 752/08]
- CAS-Croucher Funding Scheme for Joint Laboratories
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The encapsulation of luminescent gold(III) complexes by metal-organic frameworks (MOFs) lays the groundwork for new phosphorescent materials with activities that are not readily achieved by the host MOF materials or gold(III) complexes alone. In this work, strong phosphorescence with lifetimes of up to similar to 50 mu s in open air at room temperature has been achieved by incorporation of cationic cyclometalated gold(III) complexes into MOFs with anionic frameworks to form Au-III@MOFs. The Au-III@MOFs display solid state two-photon-induced phosphorescence. Photo-reduction of methyl viologen to the reduced radical was achieved inside AuIII@MOFs and in the presence of Et3N upon excitation at lambda > 370 nm under ambient conditions. These AuIII@MOFs comprise a class of reusable and size-selective heterogeneous photo-catalysts for the aerobic oxidation of secondary amines to imines as well as five other reactions, including oxidative C-H functionalization under aerobic conditions.
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