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Paper-Based Photosensor Simplifies Hydrogen Peroxide Detection

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BENGALURU, India, March 18, 2022 — Researchers at the Indian Institute of Science (IISc) have developed an inexpensive sensor made with a photoluminescent paper that enables the visual detection of even miniscule amounts of hydrogen peroxide (H2O2). The chemical is found in diverse products and biological cells. The sensor uses a sensitive photoluminescence assay for H2O2 that the researchers developed by inducing photoluminescence in terbium (Tb3+), a rare earth metal, in a hydrogel matrix. They also designed a sensitizer molecule for the hydrogel that causes the Tb3+ to emit green light under a UV lamp. When they...Read full article

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