Abstract
In this study, polydiacetylenes (PDAs) film based on the oleophilic double-sides tape as substrate was fabricated by simple drop-casting and illumination, which exhibited dramatic fluorescence and colorimetric change in the presence of VOC vapor in 2 min. Four diacetylene monomers with different chemical structure were polymerized on the double-sides tape substrate for a PDA film array, which exhibited a superior response to VOC vapor and eight different VOC vapors could be detected and discriminated using the as-prepared PDA array combined with a pattern recognition approach. Analysis of exhaled breath using these as-prepared PDA array showed that the simulated exhaled breath of diabetic patients and nephrotic patients, and the exhaled breath of healthy individuals could clearly be identified and distinguished, indicating promising application of the PDA array in disease diagnosis. Compared with the reported PDA film array, our PDA array has significant advantages in rapid response, high sensitivity, excellent flexibility, as well as simple, low-cost, and easy to mass-produce characteristics.
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