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Related Concept Videos

Photoluminescence: Applications01:14

Photoluminescence: Applications

Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
Fluorescence and Phosphorescence: Instrumentation01:25

Fluorescence and Phosphorescence: Instrumentation

Fluorometers and spectrofluorometers are two types of instruments used for measuring molecular fluorescence. These instruments differ in how they select excitation and emission wavelengths and the type of light sources they utilize. Fluorometers use absorption interference filters to choose excitation and emission wavelengths. The excitation source in a fluorometer is typically a low-pressure mercury vapor lamp that emits intense lines distributed throughout the ultraviolet and visible regions.

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Related Experiment Video

Updated: Jun 11, 2026

Fluorescence-based Monitoring of PAD4 Activity via a Pro-fluorescence Substrate Analog
08:37

Fluorescence-based Monitoring of PAD4 Activity via a Pro-fluorescence Substrate Analog

Published on: November 5, 2014

A fluorescent sensor for pyrophosphate based on a Pd(II) complex.

Jie Gao1, Thomas Riis-Johannessen, Rosario Scopelliti

  • 1State Key Laboratory of Bioreactor Engineering, School of Pharmacy, East China University of Science and Technology, 200237, Shanghai, China.

Dalton Transactions (Cambridge, England : 2003)
|June 29, 2010
PubMed
Summary
This summary is machine-generated.

A new sensor using a palladium complex and fluorescent dye detects pyrophosphate (PPi) in aqueous solutions. This method offers selective detection of PPi at micromolar levels, crucial for various analytical applications.

Related Experiment Videos

Last Updated: Jun 11, 2026

Fluorescence-based Monitoring of PAD4 Activity via a Pro-fluorescence Substrate Analog
08:37

Fluorescence-based Monitoring of PAD4 Activity via a Pro-fluorescence Substrate Analog

Published on: November 5, 2014

Area of Science:

  • Coordination Chemistry
  • Analytical Chemistry
  • Chemical Sensing

Background:

  • Pyrophosphate (PPi) is an important analyte in biological and environmental systems.
  • Selective and sensitive detection methods for PPi are needed.
  • Fluorescent chemosensors offer advantages in sensitivity and real-time detection.

Purpose of the Study:

  • To develop a novel chemosensing ensemble for pyrophosphate detection.
  • To investigate the selectivity and sensitivity of the developed sensor.
  • To demonstrate the utility of the sensor in aqueous buffered solutions.

Main Methods:

  • Synthesis and characterization of the Pd(II) complex [Pd(NO3)2(bipy)] (bipy = 2,2'-bipyridine).
  • Preparation of a chemosensing ensemble by mixing the Pd(II) complex with Methylcalcein blue (MCB).
  • Detection of pyrophosphate using fluorescence spectroscopy in buffered aqueous solution at neutral pH.

Main Results:

  • The Pd(II)-MCB ensemble effectively detected pyrophosphate.
  • The sensor demonstrated high selectivity for pyrophosphate over other common anions including phosphate, acetate, nitrate, sulfate, chloride, and bicarbonate.
  • Detection of pyrophosphate was achieved at low to mid micromolar concentrations.

Conclusions:

  • The Pd(II)-MCB chemosensing ensemble provides a selective and sensitive method for pyrophosphate detection.
  • The sensor operates effectively in aqueous solutions at neutral pH, making it suitable for various applications.
  • This fluorescent approach offers a promising tool for pyrophosphate analysis.