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Abstract:
Superwettable patterns with superhydrophobic and superhydrophilic units have the capacity of enriching and absorbing microdroplets for multifunctional biosensing. Combining the advantages of superwettable micropatterns and a rapid click reaction, we first prepared a film using propargyl methacrylate-ethylene dimethacrylate and then created a superhydrophobic-superhydrophilic micropattern by a rapid thiol-yne click reaction. Due to the high wettability contrast, water droplets tend to be anchored in the superhydrophilic region. Molecules dissolved in a water droplet are therefore uniformly enriched in the superhydrophilic region after evaporation because of the Malangoni effect. This provides a rational strategy to develop novel patterned microchips for sensing applications. Combining with fluorescence imaging technology, the Ti superwettable microchip can be used to detect o-phthalaldehyde in water, with a detection limit as low as 10-7 mol L-1. In addition, taking advantage of the oxidative color rendering ability of glucose, the microchip, when fabricated on a glass substrate, can realize reuseable glucose detection with a detection limit of 2 mM within 15 min. © 2019 American Chemical Society.
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ACS Biomaterials Science and Engineering
ISSN: 2373-9878
Year: 2019
Issue: 11
Volume: 5
Page: 6186-6195
4 . 1 5 2
JCR@2019
5 . 5 0 0
JCR@2023
ESI HC Threshold:236
JCR Journal Grade:2
CAS Journal Grade:3
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count: 5
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
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30 Days PV: 0
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