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Special Issue "Photoactive Nanomaterials for Sensitive and Selective Determination of Trace Analyzes"

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A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Chemical Sensors".

Deadline for manuscript submissions: closed (30 June 2008)

Special Issue Editor

Guest Editor
Prof. Dr. Julia Xiaojun Zhao (Website)

Department of Chemistry, University of North Dakota, Grand Forks, ND 58202, USA
Interests: Luminescent Nanoparticles, Quantum Dots, Gold Nanoparticles, Silver Nanoparticles, Luminescence, Ultrasensitive Determination

Special Issue Information

Sensitive and selective determination of various analyzes using photoactive nanomaterials will be covered in this special issue. In recent years, several types of photoactive nanomaterials have been developed and applied to ultrasensitive determination of trace amount of analytes. In general, these nanomaterials are used as a signaling reagent or a sample carrier. Compared to traditional signaling reagents, the photoactive nanomaterials provide excellent signaling characteristics and high photostability for a wide variety of analyses. In this special issue different photoactive nanomaterials and their applications in ultrasensitive determination will be described. These include: quantum dots, PEBBLEs, polymer fluorescent nanoparticles, silica fluorescent nanoparticles, gold nanoparticles and silver nanoparticles etc.

Keywords

  • Luminescent Nanoparticles
  • Quantum Dots
  • Gold Nanoparticles
  • Silver Nanoparticles
  • Luminescence
  • Ultrasensitive Determination

Published Papers (3 papers)

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Review

Open AccessReview Developments and Applications of Electrogenerated Chemiluminescence Sensors Based on Micro- and Nanomaterials
Sensors 2008, 8(9), 5942-5960; doi:10.3390/s8095942
Received: 11 August 2008 / Revised: 22 September 2008 / Accepted: 23 September 2008 / Published: 25 September 2008
Cited by 13 | PDF Full-text (197 KB) | HTML Full-text | XML Full-text
Abstract
A variety of recent developments and applications of electrogenerated chemiluminescence (ECL) for sensors are described. While tris(2,2′-bipyridyl)-ruthenium(II) and luminol have dominated and continue to pervade the field of ECL-based sensors, recent work has focused on use of these lumophores with micro- and [...] Read more.
A variety of recent developments and applications of electrogenerated chemiluminescence (ECL) for sensors are described. While tris(2,2′-bipyridyl)-ruthenium(II) and luminol have dominated and continue to pervade the field of ECL-based sensors, recent work has focused on use of these lumophores with micro- and nanomaterials. It has also extended to inherently luminescent nanomaterials, such as quantum dots. Sensor configurations including microelectrode arrays and microfluidics are reviewed and, with the recent trend toward increased use of nanomaterials, special attention has been given to sensors which include thin films, nanoparticles and nanotubes. Applications of ECL labels and examples of label-free sensing that incorporate nanomaterials are also discussed. Full article
Open AccessReview Near-Infrared Fluorescent Materials for Sensing of Biological Targets
Sensors 2008, 8(5), 3082-3105; doi:10.3390/s8053082
Received: 25 March 2008 / Accepted: 23 April 2008 / Published: 8 May 2008
Cited by 97 | PDF Full-text (602 KB) | HTML Full-text | XML Full-text
Abstract
Near-infrared fluorescent (NIRF) materials are promising labeling reagents for sensitive determination and imaging of biological targets. In the near-infrared region biological samples have low background fluorescence signals, providing high signal to noise ratio. Meanwhile, near-infrared radiation can penetrate into sample matrices deeply [...] Read more.
Near-infrared fluorescent (NIRF) materials are promising labeling reagents for sensitive determination and imaging of biological targets. In the near-infrared region biological samples have low background fluorescence signals, providing high signal to noise ratio. Meanwhile, near-infrared radiation can penetrate into sample matrices deeply due to low light scattering. Thus, in vivo and in vitro imaging of biological samples can be achieved by employing the NIRF probes. To take full advantage of NIRF materials in the biological and biomedical field, one of the key issues is to develop intense and biocompatible NIRF probes. In this review, a number of NIRF materials are discussed including traditional NIRF dye molecules, newly developed NIRF quantum dots and single-walled carbon nanotubes, as well as rare earth metal compounds. The use of some NIRF materials in various nanostructures is illustrated. The enhancement of NIRF using metal nanostructures is covered as well. The fluorescence mechanism and bioapplications of each type of the NIRF materials are discussed in details. Full article
Open AccessReview Metallic Nanomaterials for Sensitivity Enhancement of Fluorescence Detection
Sensors 2008, 8(2), 886-896; doi:10.3390/s8020886
Received: 15 January 2008 / Accepted: 30 January 2008 / Published: 8 February 2008
Cited by 15 | PDF Full-text (3186 KB) | HTML Full-text | XML Full-text
Abstract Utrasensitive detection of trace analytes by fluorescence benefits forfluorescence amplifying substrates. We review here our recent work concerned withunderstanding of enhancement mechanisms and formation of three such substrates: silverfractals, silver coated gold nanoparticles deposited on glass and fluorescence enhancinggold colloids. Full article

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