Laterally Engineering Lanthanide-MOFs Epitaxial Heterostructures for Spatially Resolved Planar 2D Photonic Barcoding
Laterally Engineering Lanthanide-MOFs Epitaxial Heterostructures for Spatially Resolved Planar 2D Photonic Barcoding
复制标题
用于空间分辨平面二维光子条形码的横向工程镧系元素-MOF 外延异质结构
DOI：
10.1002/anie.202109336
复制
发表时间：
2021-08-23
影响因子：
16.6
通讯作者：
Zhao, Yong Sheng
中科院分区：
文献类型：
--
作者：
Gao, Zhenhua;Yang, Shuo;Zhao, Yong Sheng
具有畴控发射色的金属有机骨架异质结构在实现高通量传感、防伪和信息安全方面显示出巨大的潜力。本文提出了一种基于位阻效应构建横向镧系MOF外延异质结构的策略，通过引入通道导向的客体分子来平衡镧系MOF微棒的面内和面外生长速率，最终生成具有可控长宽比的横向MOF外延异质结构。通过逐步的外延生长过程，获得了一个横向的镧系mofs异质结构库，从这个库中，用特定的镧系掺杂物质对每个畴进行合理的调制，可以在二维（2D）畴中定义光子条形码，并显着增加编码容量。这些结果提供了分子水平的洞察在空间组装多功能异质结构中使用调制剂来控制晶体形态。
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.