Citation: Xi-qi Zhang, Xiao-yong Zhang, Bin Yang, Yen Wei. Tetraphenylethene End-capped Polyethylenimine Fluorescent Nanoparticles for Cell Imaging[J]. Chinese Journal of Polymer Science, ;2014, 32(11): 1479-1488. doi: 10.1007/s10118-014-1537-3 shu

Tetraphenylethene End-capped Polyethylenimine Fluorescent Nanoparticles for Cell Imaging

1.
Department of Chemistry and the Center for Frontier Polymer Research, Tsinghua University, Beijing 100084, China

Received Date: 3 January 2014
Revised Date: 19 June 2014

Fund Project: This work was financially supported by the National Natural Science Foundation of China (Nos. 21134004, 21201108 and 51363016), and the National 973 Project (No. 2011CB935700), China Postdoctoral Science Foundation (Nos. 2012M520243 and 2013T60100).

Water soluble tetraphenylethene-based (TPE) aggregation-induced emission fluorescent organic nanoparticles (FONs) were facilely prepared via Schiff base condensation with polyethylenimine (PEI) and subsequent reduction. The obtained TPE-PEI FONs were characterized by a series of techniques including 1H-NMR, 13C-NMR, gel permeation chromatography, UV absorption spectra, fluorescence spectra, Fourier transform infrared spectroscopy, size distribution and zeta potential measurement, and transmission electron microscopy. Biocompatibility evaluation and cell imaging of TPE-PEI FONs were further explored. We demonstrated that such FONs showed intense fluorescence, spherical morphology and excellent biocompatibility, making them very suitable for cell imaging application.
- Aggregation-induced emission,
- Polyethylenimine,
- Schiff base condensation,
- Fluorescent organic nanoparticles,
- Cell imaging
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沈阳化工大学材料科学与工程学院沈阳 110142