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In this work, a robust molecular fingerprinting of metal oxide nanowires selectively to recognizes nonanal as as target molecule from analogous volatile molecule mixture is successfully prepared. The ...functional material is composed of zinc oxide (ZnO) nanowires with titanium oxide shell. ZnO nanowires were prepared by hydrothermal methods and the fingerprint shell layer was obtained by sol-gel method. The molecular imprinted nanowires could highly recognize the nonanal gas among different functional group in the mix C9 gases. Also, the selectivity among different chain length is measured and weak selectivity could be observed. Such result shows the fingerprint process could imprint C=O bond and recognition C=O bond. The present concept based on volatile molecules via molecular fingerprinting of oxide nanowires will be an interesting approach to integrate a selective molecule sensor on integrated electronics and utilized in human breath.show more
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