A Chemical-Receptor Functionalizable Interpenetrating Polymer Semiconductor Nano-networks for Outstanding Chemodetection with Remarkable Sensitivity, Selectivity and Recovery
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초록
내용
Chemosensor based on polymer semiconductors emerge a significant attention due to their low operating temperature and effective contact with target chemicals. However, their low sensitivity and selectivity, as well as slow recovery capability, are major drawbacks which should be improved. Herein, we demonstrate a functionalizable interpenetrating polymer semiconductor nano-networks (IPSNs), so that functional groups can be introduced by manipulating silanol groups of IPSNs. We anchored amine receptors as NO2 gas moieties due to their high dipole moment interaction with the gas. Therefore, the amine-receptor functionalized polymer semiconductor nano-networks (NH2-PSNs) possesses high sensitivity attributed to enhanced interactions with NO2. Further, the recovery time was significantly improved because penetration of NO2 was restricted by the NH2 receptors introduced onto the surface. Consequently, our novel approach will provide a guidance for realization of practical chemodetection.