Regulating\nEnergy Transfer Pathways to Construct Multicolor\nLuminescent Lanthanide Metal–Organic Frameworks and Their Multiorder\nAnticounterfeiting Barcodes and Antibiotic Sensing

We present the development of “all-in-one”\nlayered\nLn-MOFs (<b>Ln-OXAL</b> and <b>Ln-GLYC</b>; Ln = Tb, Eu)\nwith efficient multicolor emission, multiple anticounterfeiting, and\nsmart photoresponsive antibiotic properties. By controlling the energy\ntransfer pathways, a series of multicolor emissions from chartreuse\nto red light were successfully achieved in Ln-MOFs. Furthermore, the\ntypical fingerprint emission spectrum of Ln-MOFs with multicolor emission\ncharacteristics was utilized and further integrated into a high-capacity\nphotonic barcode encoding library, and by employing an effective encoding\nstrategy, a multilayered anticounterfeiting material with advanced\ninformation encryption capabilities was developed. Both <b>Tb-OXAL</b> and <b>Tb-GLYC</b> exhibit highly sensitive optical sensing\nabilities for detecting low concentrations of oxytetracycline, achieving\nlimit of detection values as low as 1.35 and 7.44 μM, respectively.\nThe integration of various applications in a specific material remains\nconsiderably challenging, primarily due to the inherent complexities\nin coordinating and ensuring compatibility among these varied properties.