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Near-Infrared Aggregation-Induced Enhanced Electrochemiluminescent Tetraphenylethylene Nanocrystals: A New Generation of ECL emitter

Abstract

Herein, near-infrared electrochemiluminescence (NIR ECL) emission from tetraphenylethylene nanocrystals (TPE NCs) is observed, which possesses high ECL efficiency and excellent biocompatibility compared with the current NIR ECL emitters (such as semiconductor quantum dots and metal nanoclusters). The strong ECL signal of TPE NCs originates from the aggregation-induced enhanced ECL emission via improving the efficiency of electron hole recombination and suppressing the nonradiative transition. Impressively, the TPE NCs exhibit an enormous red-shift ECL emission (678 nm) relative to the blue-light photoluminescence (PL) emission (440 nm). Compared to the photobleaching and autofluorescence in fluorescence imaging, the NIR ECL emission of TPE NCs is highly favorable to diminish background interference over visible lights and realize deeper tissue penetration, which expands the ECL emission of organic nanomaterials to NIR region for broader biological applications.

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Publication details

The article was received on 07 Jan 2019, accepted on 11 Mar 2019 and first published on 15 Mar 2019


Article type: Edge Article
DOI: 10.1039/C9SC00084D
Citation: Chem. Sci., 2019, Accepted Manuscript
  • Open access: Creative Commons BY-NC license
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    Near-Infrared Aggregation-Induced Enhanced Electrochemiluminescent Tetraphenylethylene Nanocrystals: A New Generation of ECL emitter

    J. Liu, J. Zhang, Z. Tang, Y. Zhuo, Y. Chai and R. Yuan, Chem. Sci., 2019, Accepted Manuscript , DOI: 10.1039/C9SC00084D

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