A Smart-Perception Rare Earth MOF.

Area of Science:

• Materials Science
• Optoelectronics
• Nanotechnology

Background:

• Smart luminescent materials are crucial for optoelectronics but face limitations like single responsiveness and poor adaptability.
• Existing materials often lack comprehensive spectral coverage and environmental robustness, hindering broader applications.

Purpose of the Study:

• To introduce the concept of smart multi-stimuli responsive scintillators (SMRS).
• To fabricate novel rare earth metal-organic frameworks (RE-MOFs) with active and passive perception.
• To explore their potential in advanced intelligent perception systems.

Main Methods:

• Fabrication of rare earth metal-organic frameworks (RE-MOFs).
• Characterization of scintillation performance, including light yield and detection limits.
• Investigation of luminescence responses to UV, X-ray, and thermal stimuli.

Main Results:

• RE-MOFs exhibit high relative light yield (max 42,200 photons MeV^-1) and low dose rate detection limit (min 128.2 nGy_air s^-1).
• Tunable broadband luminescence achieved through modulation of RE³⁺ content enables passive perception.
• Distinct spectral contrasts under UV and X-ray, and thermal-stimuli responsive luminescence demonstrate active perception.

Conclusions:

• The developed RE-MOFs function as effective SMRSs with both active and passive perception capabilities.
• These materials show significant potential for in situ optical imaging and high-security photonic barcodes.
• This work establishes a new direction for MOF-based scintillators in intelligent perception systems.