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Photoluminescence: Applications01:14

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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...
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Fluorescence and phosphorescence are essential phenomena in fields like analytical chemistry, biological imaging, and materials science, where they detect molecular properties and visualize cellular structures. Understanding the variables that influence these luminescent behaviors is crucial for maximizing accuracy and efficiency in their applications. These variables can broadly be grouped into chemical structure, solvent properties, and external conditions, each playing a distinct role in...
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In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...
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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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In IR spectroscopy of carboxylic acids, the C=O bond shows a characteristic band between 1710 and 1760 cm⁻¹, and the O–H bond exhibits a broad band between 2500 and 3300 cm⁻¹.
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Photoluminescence is a process where a molecule absorbs light energy and re-emits it in the form of light. This phenomenon occurs when a substance absorbs photons, promoting its electrons to higher energy level excited states, followed by a relaxation process in which the electrons return to their original ground state energy levels and emit light. Photoluminescence is widely observed in various materials, including semiconductors, and organic and inorganic compounds.
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  11. Phosphorescent Sensor Based On Iridium(iii) Complex With Aggregation-induced Emission Activity For Facile Detection Of Volatile Acids.
  1. Home
  3. Research Domains
  5. Chemical Sciences
  7. Inorganic Chemistry
  9. Inorganic Green Chemistry
  11. Phosphorescent Sensor Based On Iridium(iii) Complex With Aggregation-induced Emission Activity For Facile Detection Of Volatile Acids.

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Phosphorescent Sensor Based on Iridium(III) Complex with Aggregation-Induced Emission Activity for Facile Detection of Volatile Acids.

Yu Pei1, Yan Sun1, Dongxia Zhu1

  • 1Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun 130024, China.

Molecules (Basel, Switzerland)
|January 8, 2025

View abstract on PubMed

Summary
This summary is machine-generated.

Researchers developed a novel solid-state phosphorescent sensor for detecting volatile acids. This new material, Ir-NH, offers rapid, reversible visual detection, crucial for environmental and health monitoring.

Keywords:
Iridium(III) complexacid-base stimulationaggregation-induced emission (AIE)

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Area of Science:

  • Materials Science
  • Analytical Chemistry
  • Environmental Science

Background:

  • Phosphorescent sensors are vital for detecting volatile acids, which significantly impact ecosystems and human health.
  • Solid-state phosphorescent materials for acid-base sensing are scarce, hindering real-time monitoring.
  • Developing efficient and rapid volatile acid sensors is a critical need.

Purpose of the Study:

  • To synthesize a novel cationic Iridium(III) complex, Ir-NH, with Aggregation-Induced Emission (AIE) properties.
  • To investigate the potential of Ir-NH as a solid-state sensor for volatile acids.
  • To achieve reversible acid-base stimulus-responsive emission switching.

Main Methods:

  • Synthesis of a new cationic Iridium(III) complex (Ir-NH) by introducing N-H and -NH2 substituents into an auxiliary ligand.
  • Characterization of the synthesized complex and its photophysical properties, including AIE.
  • Fabrication of a sensing device using Ir-NH as the active material for volatile acid monitoring.

    • Main Results:

    • The synthesized Ir-NH complex exhibits Aggregation-Induced Emission (AIE), enhancing emission in aggregated states.
    • Ir-NH demonstrated reversible color switching in response to acid-base stimulation due to its molecular structure.
    • A practical sensing device for volatile acid monitoring was successfully constructed using Ir-NH.

    Conclusions:

    • The study presents a new strategy for designing phosphorescent materials with AIE and acid-base stimulus-responsive properties.
    • Ir-NH serves as an efficient and rapid solid-state sensor for volatile acid detection.
    • The developed sensor offers a convenient method for real-time monitoring of volatile acids.