期刊
MATERIALS HORIZONS
卷 7, 期 7, 页码 1782-1789出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0mh00249f
关键词
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资金
- National Natural Science Foundation of China (NSFC) [2017YFB1104600, 61605055, 61590930, 61825502, 81771930]
- Shenzhen Science and Technology Innovation Commission [KQTD20170810111314625]
- Graduate Interdisciplinary Research Fund of Jilin University [10183201832]
Novel high-performance non-labeled fluoro-sensing micro/nanooptics require lithographically fabricable stimuli-fluorescence transductive materials well-tailored in molecular levels, towards superior processibility, stability, sensitivity, on-chip integration and portability, and real-time and in situ analysis. Here, aggregation-induced-emission fluorophores with oxetane groups (AIEoxes) and their covalently co-crosslinkable epoxy composites are customized for the fabrication of micro/nano-devices via single/multi-photon lithography. The oxetane modification increases the AIEoxe miscibility in the epoxy matrix (doping ratio up to 10 wt%), and consequently improves the as-formed devices' quality, stability, and fluorescence intensity and sensitivity. The multi-color-AIEoxe polymeric micro/nano-devices allow fluorescence-resonance-energy-transfer among AIEoxes, which enables sensitive and specifically spectral detection of VOCs. With the micro/nano-waveguide configuration, solvent-responsive AIE fluorescence and evanescent-field/refractive-index sensing enhance the AIE-fluorescent detection of trace organic solvents in aqueous solutions (detection limit, similar to 0.004% v/v, tetrahydrofuran/water) and their facile integration in functional micro/nano-systems like optofluidics.
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