Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 7, Issue 16, Pages 8827-8833Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b01436
Keywords
Janus suprabeads; microfluidics; colloidal photonic crystals; sensor; display
Funding
- National High Technology Research and Development Program of China (863 Program) [2012AA030313]
- National Natural Science Foundation of China [21076103, 21474052, 21176122]
- Natural Science Foundation of Jiangsu Province [BK20140934]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Qing Lan Project
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The design and development of Janus suprabeads (JSs) With multiple responses are highly desirable in the fabrication of functional nanomaterials, In this work, we report a triphase microfluidic strategy for the construction of JSs with temperature-magnetism-optics triple responses. Initially, macromonomer poly(methacrylic acid) (PMAA) obtained Via catalytic chain transfer polymerization (CCTP) was grafted onto the polystyrene (PS) colloidal photonic crystals (CPCs) surface. Because abundant carboxylic acid groups in PMAA could coordinate cadmium ions for in situ production of fluorescent CdS quantum dots (QDs) after introducing sulfur ions, the as-prepared JSs were endowed with favorable optical properties. Meanwhile, the as-prepared Cd2+/PS CPCs were employed as a template to build JSs with temperature-magnetism sensitivity via the introduction of magnetic Fe3O4 and hydrogels. Finally, the fluorescence pattern was easily performed by using chalcogenides as ink to write on the pad) in which in situ reaction mechanism was involved in the response. The multiple responsive JSs show promising applications in sensor, display, and anticounterfeit fields.
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