Journal
CHINESE JOURNAL OF POLYMER SCIENCE
Volume 32, Issue 7, Pages 871-879Publisher
SPRINGER
DOI: 10.1007/s10118-014-1461-6
Keywords
Cyano-substituted diarylethlene derivative; Aggregation-induced emission; Anhydride ring-opening polymerization; Red fluorescent organic nanoparticles; Cell imaging
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Funding
- National Natural Science Foundation of China [21134004, 21201108, 51363016]
- National 973 Project [2011CB935700]
- China Postdoctoral Science Foundation [2012M520243, 2013T60100]
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A cyano-substituted diarylethlene derivative aggregation-induced emission (AIE) dye with two amino end-groups and 4,4'-(hexafluoroisopropylidene)diphthalic anhydride were facilely incorporated into red fluorescent organic nanoparticles (FONs) via room temperature anhydride ring-opening polymerization under an air atmosphere. These obtained RO-HFDA FONs were characterized by a series of techniques including gel permeation chromatography, Fourier transform infrared spectroscopy, size distribution and zeta potential measurements, UV-Vis absorption spectrum, fluorescent spectroscopy and transmission electron microscopy. Biocompatibility evaluation and cell uptake behavior of RO-HFDA FONs were further investigated to explore their potential biomedical application. We demonstrated that such FONs showed high water dispersibility, stable uniform spherical morphology (150-200 nm), broad excitation band (350-605 nm), intense red fluorescence (627 nm) and excellent biocompatibility, making them promising for cell imaging applications.
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