Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 39, Pages 13803-13807Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201907433
Keywords
anti-counterfeiting devices; heteroepitaxial growth; Ln-MOF; metal-organic frameworks; photonic barcodes
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Funding
- Ministry of Science and Technology of China [2017YFA0204502]
- National Natural Science Foundation of China [21790364, 21533013]
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Micro/nanoscale multicolor barcodes with unique identifiability and a small footprint play significant roles in applications such as multiplexed labeling and tracking systems. Now, a strategy is reported to design multicolor photonic barcodes based on 1D Ln-MOF multiblock heterostructures, where the domain-controlled emissive colors and different block lengths constitute the fingerprint of a corresponding heterostructure. The excellent heteroepitaxial growth characteristics of MOFs enable the effective modulation of the coding structures, thereby remarkably increasing the encoding capacity. The as-prepared multicolor barcodes enable an efficient authentication and exhibit great potential in fulfilling the functions of anti-counterfeiting, information security, and so on. The results will pave an avenue to novel hybrid MOFs for optical data recording and security labels.
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