Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 57, Issue 28, Pages 8453-8457Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201802089
Keywords
band-gap engineering; metal doping; metal-organic frameworks; photocatalysis; titanium
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Funding
- EU [ERC Stg Chem-fs-MOF 714122]
- Spanish MINECO [MDM-2015-0538, MAT2016-75586-C4-4-P, CTQ2017-83486-P, CTQ2014-59209-P]
- Junta de Andalucia [P10-FQM-6050]
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We report a new family of titanium-organic frameworks that enlarges the limited number of crystalline, porous materials available for this metal. They are chemically robust and can be prepared as single crystals at multi-gram scale from multiple precursors. Their heterometallic structure enables engineering of their photoactivity by metal doping rather than by linker functionalization. Compared to other methodologies based on the post-synthetic metallation of MOFs, our approach is well-fitted for controlling the positioning of dopants at an atomic level to gain more precise control over the band-gap and electronic properties of the porous solid. Changes in the band-gap are also rationalized with computational modelling and experimentally confirmed by photocatalytic H-2 production.
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