Peptides are promising probes for sensor development, while peptide screening for volatile organic compound (VOC) binding remains a challenge. In this study, the peptides binding to benzaldehyde were screened from a phage display library. The peptide sequences showing the highest binding activity were NPAATMA, SIFPVSR, and MPRLPPA. The binding in the gas phase was also confirmed using a candidate peptide-immobilized ZnO nanowire structure. The screened peptides could prove to be useful for benzaldehyde sensor development.
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