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Microarrays Formed by Microfluidic Spinning as Multidimensional Microreactors
Author(s) -
Xu LingLing,
Wang CaiFeng,
Chen Su
Publication year - 2014
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201310977
Subject(s) - microreactor , microfiber , microfluidics , nanotechnology , spinning , materials science , polyvinylpyrrolidone , fabrication , polymer , template , reagent , chemistry , composite material , polymer chemistry , organic chemistry , medicine , alternative medicine , pathology , catalysis
The exploration of methods allowing chemical reactions to be carried out at ultrasmall scales is of great scientific and technological interest. We report herein a microfluidic spinning technique for the fabrication of softened‐polymer microarrays for use as multidimensional microreactors and the application of these microreactors in the synthesis of fluorescent nanocrystals. Highly aligned microarrays and controlled‐angle grids were readily constructed from microfluidically spun polyvinylpyrrolidone (PVP) microfibers. One–zero dimensional (1D–0D), one–one dimensional (1D–1D), and one–two dimensional (1D–2D) microreactors were then produced by the intersections between microfibers and droplets, crossed microfibers, and microfibers and a PVP film, respectively; each component can be doped with different reagents. Specific examples show that these multidimensional microreactors enable the in situ generation of fluorescent nanocrystals without ligands within minutes.