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Issue 10, 2010
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Amplified energy transfer in conjugated polymer nanoparticle tags and sensors

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Abstract

Nanoparticles primarily consisting of π-conjugated polymers have emerged as extraordinarily bright fluorescent tags with potential applications in biological imaging and sensing. As fluorescent tags, conjugated polymer nanoparticles possess a number of advantageous properties, such as small particle size, extraordinary fluorescence brightness, excellent photostability, and high emission rate. Exciton diffusion occurring in the nanoparticles results in amplified energy transfer, doubling the energy transfer efficiency in some cases. Amplified energy transfer has been exploited to obtain highly red-shifted emission, oxygen-sensing nanoparticles, and fluorescence photoswitching. Additional observed phenomena are attributable to amplified energy transfer in conjugated polymers, including superquenching by metal nanoparticles, and fluorescence modulation by hole polarons. This feature article presents an overview of recent investigations of optical properties and energy transfer phenomena of this relatively novel type of fluorescent nanoparticle with a viewpoint towards demanding fluorescence-based imaging and sensing applications.

Graphical abstract: Amplified energy transfer in conjugated polymer nanoparticle tags and sensors

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Publication details

The article was received on 12 May 2010, accepted on 11 Jun 2010 and first published on 10 Aug 2010


Article type: Feature Article
DOI: 10.1039/C0NR00322K
Citation: Nanoscale, 2010,2, 1999-2011
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    Amplified energy transfer in conjugated polymer nanoparticle tags and sensors

    Z. Tian, J. Yu, C. Wu, C. Szymanski and J. McNeill, Nanoscale, 2010, 2, 1999
    DOI: 10.1039/C0NR00322K

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