Conformation-Driven Responsive 1D and 2D Lanthanide-Metal-Organic Framework Heterostructures for High-Security Photonic Barcodes

被引：4

作者：

Yang, Shuo ^{[1
]}

Xu, Yuyu ^{[1
]}

Lin, Ru ^{[1
]}

Feng, Xingwei ^{[1
]}

Wang, Kai ^{[1
]}

Wang, Zhitong ^{[1
]}

Cui, Ke ^{[1
]}

Chen, Shunwei ^{[1
]}

Wang, Zifei ^{[1
]}

Wang, Xue ^{[1
]}

Chen, Shiwei ^{[1
]}

Zhang, Wei ^{[2
]}

Zhu, Chaofeng ^{[1
]}

Gao, Zhenhua ^{[1
]}

机构：

[1] Qilu Univ Technol, Shandong Acad Sci, Sch Mat Sci & Engn, 3501 Daxue Rd, Jinan 250353, Shandong, Peoples R China

[2] Hunan Normal Univ, Coll Chem & Chem Engn, Changsha 410081, Peoples R China

来源：

SMALL | 2024年 / 20卷 / 44期

基金：

中国国家自然科学基金;

关键词：

anti-counterfeiting applications; conformational variation; energy transfer; MOF heterostructures; photonic barcodes; ENERGY-TRANSFER; WAVE-GUIDES; LUMINESCENCE;

D O I：

10.1002/smll.202402890

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Development of luminescent segmented heterostructures featuring multiple spatial-responsive blocks is important to achieve miniaturized photonic barcodes toward anti-counterfeit applications. Unfortunately, dynamic manipulation of the spatial color at micro/nanoscale still remains a formidable challenge. Here, a straightforward strategy is proposed to construct spatially varied heterostructures through amplifying the conformation-driven response in flexible lanthanide-metal-organic frameworks (Ln-MOFs), where the thermally induced minor conformational changes in organic donors dramatically modulate the photoluminescence of Ln acceptors. Notably, compositionally and structurally distinct heterostructures (1D and 2D) are further constructed through epitaxial growth of multiple responsive MOF blocks benefiting from the isomorphous Ln-MOF structures. The thermally controlled emissive colors with distinguishable spectra carry the fingerprint information of a specific heterostructure, thus allowing for the effective construction of smart photonic barcodes with spatially responsive characteristics. The results will deepen the understanding of the conformation-driven responsive mechanism and also provide guidance to fabricate complex stimuli-responsive hierarchical microstructures for advanced optical recording and high-security labels. A strategy to amplify the conformation-variation-driven response is proposed through thermally regulating the degree of the ET from flexible ligand to Ln3+ acceptors in lanthanide-MOFs, where the minor conformational variations in organic linkers dramatically modulate the PL performances. These results will provide guidance for the rational construction of responsive photonic devices for advanced optical recording and high-security labels. image

引用

页数：10