MUMBAI, India, Jan. 9 -- Intellectual Property India has published a patent application (202511114963 A) filed by Chandigarh University, Mohali, Punjab, on Nov. 21, 2025, for 'calcium-based metal organic framework as a turn-off fluorescent sensor for antibiotics detection.'
Inventor(s) include Tanvi Verma; and Archana Thakur.
The application for the patent was published on Jan. 9, under issue no. 02/2026.
According to the abstract released by the Intellectual Property India: "A calcium-based metal-organic framework (Ca-MOF) was synthesized hydrothermally using calcium acetate with dual organic linkers, trimesic acid and glutaric acid, for use as a turn-off fluorescent sensor for antibiotic detection. The synthesized Ca-MOF exhibited a rod-like morphology and strong photoluminescence, confirmed by XRD, FESEM, FTIR, TGA, BET, and XPS analyses. The Ca-MOF demonstrated rapid fluorescence quenching in the presence of various antibiotics, including tetracycline hydrochloride, ciprofloxacin, amoxicillin, doxycycline, and sulfadiazine, with a detection limit of 0.0793 M for tetracycline hydrochloride and a response time of 20 minutes. The sensor showed high selectivity, pH stability, reusability, and long-term storage stability. The environmentally friendly, calcium-based framework offers a cost-effective and sustainable platform for antibiotic detection in environmental and pharmaceutical samples."
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