Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 53, Issue 15, Pages 3988-3992Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201310977
Keywords
microarrays; microfluidic spinning; microreactors; nanocrystals; polymer grids
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Funding
- National High Technology Research and Development Program of China (863 Program) [2012AA030313]
- National Natural Science Foundation of China [21076103, 21006046]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20103221110001]
- Industrial Project in the Science and Technology Pillar Program of Jiangsu Province [BE2012181]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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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.
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