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    Area of Science:

    • Analytical Chemistry
    • Spectroscopy
    • Mobile Technology Integration

    Background:

    • Traditional time-gated luminescence spectroscopy relies on expensive and bulky laboratory instruments.
    • There is a need for portable and cost-effective solutions for luminescence measurements.

    Purpose of the Study:

    • To demonstrate the feasibility of using a smartphone for detecting time-gated luminescence spectra.
    • To develop a portable and accessible method for luminescence analysis.

    Main Methods:

    • A smartphone was utilized as the detector for time-gated luminescence spectra.
    • A mechanical chopper was employed as a shutter, synchronized with the excitation source via a transistor-transistor logic (TTL) signal.
    • Eu(TTA)3 powder and Eu-tetracycline complex solutions were analyzed.

    Main Results:

    • Time-gated luminescence spectra were successfully detected using the smartphone-based system.
    • The method achieved a temporal resolution of tens of microseconds.
    • The system demonstrated capability in analyzing both solid-state (Eu(TTA)3 powder) and solution-based (Eu-tetracycline complex) samples.

    Conclusions:

    • Smartphone integration offers a viable route towards portable luminescence spectroscopy.
    • This approach can significantly reduce the cost and complexity associated with luminescence measurements.
    • The developed method paves the way for field-deployable instruments for luminescence spectra and lifetime analysis.