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Folic Acid-Functionalized Polythiophene for Targeted Cellular Imaging

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Polythiophene containing pendant N-hydroxysuccinimide (NHS) ester groups was reacted with poly(ethylene glycol) (PEG) and oleylamine, which was subsequently modified with folic acid to prepare a targeting fluorescent cellular imaging probe. The amphiphilic character of the folic acidfunctionalized polythiophene induced the formation of nanoparticles with an average diameter of 95.3 nm in water. This polymer shows good photostability and low toxicity toward KB cells at a high concentration (100 μg/mL), which meets the crucial requirement for cellular imaging and other biological applications. The folic acid-functionalized polythiophene could be internalized efficiently into KB cells and accumulated in the cytoplasm to yield bright fluorescence, indicating that it is a good candidate material for the fluorescence imaging of living cells.
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Document Type: Research Article

Publication date: January 1, 2016

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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