Abstract
The fabrication of functional conductive polymer nanowires (CPNWs), including ultrahigh-sensitive flexible nanosensors has attracted considerable attention in field of the Internet of Things. However, the controllable and space-selective growth of CPNWs remains challenging, and a novel synthetic technique is required. Herein, we demonstrate the synthesis of space-selective CPNWs that include quantum dots (QDs) with changeable optical properties via single-pulse laser irradiation in air at atmospheric pressure. Time-resolved shadowgraphy was applied to monitor the synthetic process of the CPNWs and optimise the process conditions. The electrical conductivity of the CPNWs with QDs (QD-CPNWs) was analysed in the presence and absence of light irradiation and was found to change drastically (over six times) under light irradiation. QD-CPNW synthesis under laser irradiation shows great potential for fabricating highly photosensitive functional nanomaterials and is expected to be applied in the production of ultrahigh-sensitive photosensors in the future.
Highlights
The fabrication of functional conductive polymer nanowires (CPNWs), including ultrahigh-sensitive flexible nanosensors has attracted considerable attention in field of the Internet of Things
We demonstrate the space-selective synthesis of conductive polymer nanowires that include quantum dots (QD-CPNWs) with changeable electrical properties via single-pulse laser irradiation in air at atmospheric pressure
The QD-CPNWs were generated by a single pulsed laser irradiation from a source film prepared by drop-casting a solution of CdSe/ZnS core–shell QDs dispersed in PEDOT-PEG propylenecarbonate solution on a glass substrate
Summary
The fabrication of functional conductive polymer nanowires (CPNWs), including ultrahigh-sensitive flexible nanosensors has attracted considerable attention in field of the Internet of Things. We demonstrate the synthesis of space-selective CPNWs that include quantum dots (QDs) with changeable optical properties via single-pulse laser irradiation in air at atmospheric pressure. Several approaches for the synthesis of PNWs have been reported, including the wetting of porous alumina templates36, electrospinning[37] and methods based on solution chemistry These methods do not provide space selectivity and size controllability, and the types of PNWs that can be synthesized are restricted by the requirement of high temperatures and/or chemical solvents. We demonstrate the space-selective synthesis of conductive polymer nanowires that include quantum dots (QD-CPNWs) with changeable electrical properties via single-pulse laser irradiation in air at atmospheric pressure. The conductivity of the QD-CPNWs was drastically increased by approximately six times by light irradiation
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