期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 60, 期 46, 页码 24519-24525出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202109336
关键词
2D photonic barcodes; anti-counterfeiting applications; dimensional modulation; lanthanides; MOF heterostructures
资金
- Ministry of Science and Technology of China [2017YFA0204502]
- National Natural Science Foundation of China (NSFC) [21905145, 11774188]
- Incubation Program of Universities Preponderant Discipline of Shandong Province [03010304]
- Mountain Tai Young Scholarship [23170504]
- Excellent Youth Foundation of Shandongs Natural Scientific Committee [JQ201802]
A strategy based on steric-hindrance effect is proposed to construct lateral lanthanide-MOFs epitaxial heterostructures, allowing for the generation of lateral MOF epitaxial heterostructures with controllable aspect ratios. Through a stepwise epitaxial growth procedure, a library of lateral Ln-MOFs heterostructures are acquired, enabling the definition of photonic barcodes in a two-dimensional domain with remarkably enlarged encoding capacity. The results provide insight into the use of modulators in governing crystallite morphology for spatially assembling multifunctional heterostructures.
Metal-organic frameworks (MOFs) heterostructures with domain-controlled emissive colors have shown great potential for achieving high-throughput sensing, anti-counterfeit and information security. Here, a strategy based on steric-hindrance effect is proposed to construct lateral lanthanide-MOFs (Ln-MOFs) epitaxial heterostructures, where the channel-directed guest molecules are introduced to rebalance in-plane and out-of-plane growth rates of the Ln-MOFs microrods and eventually generate lateral MOF epitaxial heterostructures with controllable aspect ratios. A library of lateral Ln-MOFs heterostructures are acquired through a stepwise epitaxial growth procedure, from which rational modulation of each domain with specific lanthanide doping species allows for definition of photonic barcodes in a two-dimensional (2D) domain with remarkably enlarged encoding capacity. The results provide molecular-level insight into the use of modulators in governing crystallite morphology for spatially assembling multifunctional heterostructures.
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