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[½»Á÷] Nanomaterials in fluorescence-based biosensingÎÄÏ×·­Ò룬»¶Ó­½»Á÷

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Anal Bioanal Chem (2009) 394:47¨C59
DOI 10.1007/s00216-009-2643-x
Nanomaterials in fluorescence-based biosensing
Wenwan Zhong

Wenwan Zhong
has  been  Assistant  Professor  of Chemistry  at  the  University  of California, Riverside, since July 2006. She received the Pilot In-
terdisciplinary  Research  Award from the Institute for Integrative Genome Biology of UC, River-side.  Her  current  research  in-
terests  are:  developing  novel analytical strategies for utilizing nanomaterials  in  biosensing; studying  nanotoxicity  using  mi-
croscale  separation  techniques like capillary electrophoresis; and developing field-flow fractionation-based  methods  for  purification  and  analysis  of  large  protein
complexes.
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  • 2015-08-16 22:50:46, 564.83 K

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Abstract  
Fluorescence-based detection is the most common method utilized in biosensing because of its high sensitivity,
simplicity,  and  diversity.  In  the  era  of  nanotechnology, nanomaterials are starting to replace traditional organic dyes as  detection  labels  because  they  offer  superior  optical properties, such as brighter fluorescence, wider selections of excitation and emission wavelengths, higher photostability, etc. Their size- or shape-controllable optical characteristics also facilitate the selection of diverse probes for higher assay throughput.  Furthermore,  the  nanostructure  can  provide  a solid support for sensing assays with multiple probe molecules attached to each nanostructure, simplifying assay design and increasing the labeling ratio for higher sensitivity. The current review  summarizes  the  applications  of  nanomaterials¡ªincluding  quantum  dots,  metal  nanoparticles,  and  silica nanoparticles¡ªin biosensing using detection techniques such as  fluorescence,  fluorescence  resonance  energy  transfer (FRET), fluorescence lifetime measurement, and multiphoton microscopy. The advantages nanomaterials bring to the field of biosensing are discussed. The review also points out the importance of  analytical  separations  in  the  preparation  of nanomaterials with fine optical and physical properties for biosensing. In conclusion, nanotechnology provides a great opportunity to analytical chemists to develop better sensing strategies, but also relies on modern analytical techniques to pave its way to practical applications.

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