Regulating Energy Transfer Pathways to Construct Multicolor Luminescent Lanthanide Metal–Organic Frameworks and Their Multiorder Anticounterfeiting Barcodes and Antibiotic Sensing

We present the development of “all-in-one”
layered
Ln-MOFs (Ln-OXAL and Ln-GLYC; Ln = Tb, Eu)
with efficient multicolor emission, multiple anticounterfeiting, and
smart photoresponsive antibiotic properties. By controlling the energy
transfer pathways, a series of multicolor emissions from chartreuse
to red light were successfully achieved in Ln-MOFs. Furthermore, the
typical fingerprint emission spectrum of Ln-MOFs with multicolor emission
characteristics was utilized and further integrated into a high-capacity
photonic barcode encoding library, and by employing an effective encoding
strategy, a multilayered anticounterfeiting material with advanced
information encryption capabilities was developed. Both Tb-OXAL and Tb-GLYC exhibit highly sensitive optical sensing
abilities for detecting low concentrations of oxytetracycline, achieving
limit of detection values as low as 1.35 and 7.44 μM, respectively.
The integration of various applications in a specific material remains
considerably challenging, primarily due to the inherent complexities
in coordinating and ensuring compatibility among these varied properties.

本工作报道了“全合一”层状镧系金属有机框架（Ln-MOFs，包括Ln-OXAL与Ln-GLYC，其中Ln代表铽Tb、铕Eu）的开发，该材料具备高效多色发射、多重防伪以及智能光响应抗生素传感性能。通过调控能量传递路径，我们在Ln-MOFs中成功实现了从黄绿色到红光的一系列多色发射。此外，我们利用具备多色发射特性的Ln-MOFs典型指纹发射光谱，将其进一步整合至大容量光子条码编码库中；通过采用高效编码策略，开发出了具备先进信息加密能力的多层防伪材料。Tb-OXAL与Tb-GLYC均对低浓度土霉素（oxytetracycline）展现出高灵敏光学传感能力，其检测限分别低至1.35 μM与7.44 μM。在单一材料中集成多种应用场景仍面临较大挑战，这主要源于协调并保障这些各异性能间兼容性的内在复杂性。