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Erschienen in: Journal of Materials Science 26/2021

21.06.2021 | Polymers & biopolymers

Microfluidic-assisted assembly of fluorescent self-healing gel particles toward dual-signal sensors

verfasst von: Yun-Ya He, Ji-Dong Liu, Rui Cheng, Chang Liu, Hong-Gang Ye, Lu-Wei Hao, Qing Li, Su Chen

Erschienen in: Journal of Materials Science | Ausgabe 26/2021

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Abstract

Quantum dots (QDs)/gel composites have sparked tremendous interests due to their great potentials in sensors. However, in most cases, these sensors are focused on single signal detection, suffers from a key hurdle of low signal density. Thus, it is highly desirable to develop multi-signal QDs/gel-based sensors. In this work, we constructed dual-signal QDs/gel assemblies by a microfluidic-assisted method, which shows promising application in dual-signal sensors. Typically, self-healing QDs/gel beads with different fluorescent signals were fabricated via microfluidic techniques. In virtue of the microfluidic-assisted self-assembly, various dual-signal assemblies were constructed controllably in the confined channels, where self-healing QDs/gel beads serve as building blocks. As expected, the assemblies exhibit rapid dual-signal detection capability toward organic amines and pH values. In addition, by using self-healing gels as printable materials, the combination of the self-assembly strategy with 3D microfluidic printing allows the generation of diverse responsive dual-signal patterns and structures. The self-assembly of self-healing building blocks not only offers a promising route toward fluorescent dual-signal architectures for advanced sensors, but will also guide the development of 3D printing for controllable fabrication of functional assemblies.

Graphical abstract

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Metadaten
Titel
Microfluidic-assisted assembly of fluorescent self-healing gel particles toward dual-signal sensors
verfasst von
Yun-Ya He
Ji-Dong Liu
Rui Cheng
Chang Liu
Hong-Gang Ye
Lu-Wei Hao
Qing Li
Su Chen
Publikationsdatum
21.06.2021
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 26/2021
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-021-05992-1

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