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<p>Luminescent metal-organic frameworks (MOFs) with multifunctional capabilities are highly sought after for applications in security, forensics, and environmental monitoring. Herein, a 2D Zn-MOF (<b>LCU-133</b>) was rationally constructed to integrate multiple functions based on intrinsic fluorescence and host-guest interaction. The intrinsic blue emission of <b>LCU-133</b> enables high-resolution latent fingerprints imaging on multiple substrates, while its structural adaptability facilitates advanced information encryption <i>via</i> UV-responsive QR codes and anti-counterfeiting inks. Furthermore, <b>LCU-133</b> demonstrates excellent fluorescence enhancement detection of ciprofloxacin (CIP) in river water, achieving low detection limits (LODs) of 0.56 and 0.25 µmol/L, respectively, with high selectivity, fast response and strong anti-interference ability. In addition, using a smartphone RGB app to analyze the luminous test strips, a naked eye on-site visual quantification detection CIP is realized. Comprehensive experiments coupled with DFT calculations elucidate a photoinduced electron transfer (PET)-mediated luminescence enhancement mechanism, underscoring the role of host-guest interactions in selective recognition. This work presents a versatile single MOF-based platform that bridges diverse luminescence applications in security, forensics, and environmental sensing.</p>

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Multifunctional fluorescent Zn-MOF for latent fingerprint visualization, information anti-counterfeiting encryption and turn-on sensing of ciprofloxacin in river water

  • 期刊论文

  • 发表日期：

    2026年3月24日

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  • Yuying Yuan,
  • Yuting Ren,
  • Yunwu Li,
  • Luomei Liu,
  • Huiyan Ma,
  • Suna Wang,
  • Jiandong Pang

摘要

Luminescent metal-organic frameworks (MOFs) with multifunctional capabilities are highly sought after for applications in security, forensics, and environmental monitoring. Herein, a 2D Zn-MOF (LCU-133) was rationally constructed to integrate multiple functions based on intrinsic fluorescence and host-guest interaction. The intrinsic blue emission of LCU-133 enables high-resolution latent fingerprints imaging on multiple substrates, while its structural adaptability facilitates advanced information encryption via UV-responsive QR codes and anti-counterfeiting inks. Furthermore, LCU-133 demonstrates excellent fluorescence enhancement detection of ciprofloxacin (CIP) in river water, achieving low detection limits (LODs) of 0.56 and 0.25 µmol/L, respectively, with high selectivity, fast response and strong anti-interference ability. In addition, using a smartphone RGB app to analyze the luminous test strips, a naked eye on-site visual quantification detection CIP is realized. Comprehensive experiments coupled with DFT calculations elucidate a photoinduced electron transfer (PET)-mediated luminescence enhancement mechanism, underscoring the role of host-guest interactions in selective recognition. This work presents a versatile single MOF-based platform that bridges diverse luminescence applications in security, forensics, and environmental sensing.