| Autor: |
Baoyuan Xu, Shuo Yang, Xingwei Feng, Tongjin Zhang, Zhenhua Gao, Yong Sheng Zhao |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Journal of Materiomics, Vol 9, Iss 3, Pp 423-430 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2352-8478 |
| DOI: |
10.1016/j.jmat.2022.12.009 |
| Popis: |
Micro/nanoscale photonic barcodes hold great potential for broad applications in items tracking, multiplexed bioassays and anti-counterfeiting. The ever-increasing demand in advanced anti-counterfeiting applications calls for micro/nanoscale barcodes with accurate recognition, large encoding capacity and high security level. Here, we proposed a strategy to construct the dual-stimuli responsive photonic barcodes based on the perovskite quantum dots (PQDs) doped polymer whispering-gallery-mode (WGM) microcavities via swelling-deswelling method. Benefiting from the well-defined spherical microcavities, the photoluminescence (PL) spectra of as-prepared composites exhibit a series of sharp peaks characteristics resulting from the effective WGM modulation, which constitutes the fingerprint of a specific resonator and thus allows a definition of photonic barcodes. On this basis, we achieved responsive photonic barcodes based on the volatile polar-solvent-controlled luminescence in the microspheres benefitting from the space-confined microcavities and the ionic feature of the PQDs. Moreover, the light-controlled photonic barcodes have further been acquired through reversibly regulating the inactivation and activation of the energy transfer (ET) process between the PQDs and photochromic dyes. The well-established protocols of PQDs@WGM enable the development of distinct responsive barcodes with multi-responsive features, which will pave an avenue to new types of flexible WGM-based components for optical data recording and security labels. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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