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Reporter Genes02:11

Reporter Genes

Reporter genes are a type of protein-coding gene that are often tagged to a gene of interest. Once inside a target cell, reporter genes usually produce visually identifiable characteristics like fluorescence and luminescence when expressed along with the gene of interest. Thus, reporter genes “report” the presence or absence of genes of interest in an organism, determine the gene expression pattern, or track the physical location of a DNA segment or protein in the cell.
Commonly used reporter...

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Related Experiment Video

Updated: Jul 17, 2026

Compact Quantum Dots for Single-molecule Imaging
17:14

Compact Quantum Dots for Single-molecule Imaging

Published on: October 9, 2012

RNA-mediated fluorescent Q-PbS nanoparticles.

Anil Kumar1, Anshuman Jakhmola

  • 1Department of Chemistry and Centre of Nanotechnology, Indian Institute of Technology Roorkee, Roorkee-247667, India. anilkfcy@iitr.ernet.in

Langmuir : the ACS Journal of Surfaces and Colloids
|February 9, 2007
PubMed
Summary

Researchers synthesized fluorescent lead sulfide (PbS) nanoparticles using RNA. This RNA-templated approach enhances nanoparticle stability and electronic properties, enabling potential applications in solar cells and imaging.

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Area of Science:

  • Nanotechnology
  • Materials Science
  • Biophysics

Background:

  • Lead sulfide (PbS) nanoparticles exhibit quantum confinement effects.
  • RNA's unique structure can interact with nanomaterials.
  • Controlling nanoparticle properties is crucial for advanced applications.

Purpose of the Study:

  • To synthesize RNA-mediated fluorescent PbS nanoparticles.
  • To investigate the effect of RNA binding on PbS nanoparticle properties.
  • To explore potential applications of these biopolymeric nanostructures.

Main Methods:

  • Synthesis of PbS nanoparticles within the quantum-confined region.
  • Utilizing RNA for surface functionalization and size tailoring.
  • Characterization of optical and electronic properties, including emission spectra and excitation range.

Main Results:

  • Achieved face-centered cubic phase PbS nanoparticles with RNA.
  • Demonstrated RNA binding improved nanoparticle size, stability, and electronic properties.
  • Observed strong, narrow emission at 675 nm with broad excitation (330-620 nm).
  • Showcased control over charge carrier relaxation dynamics via experimental conditions.

Conclusions:

  • RNA plays a cooperative role in enhancing the electronic properties of PbS nanoparticles.
  • RNA-mediated PbS nanoparticles exhibit promising characteristics for optoelectronic devices.
  • Potential applications include solar cells, fluorescence imaging, and detection devices.