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Author Spotlight: High-Throughput Measurement of Intracellular ROS Levels in Hepatocellular Lines

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Controlled ROS generation in pyridinium-functionalized nanocatalysts for selective photooxidation.

Jing-Wang Cui^1,2, Shuai Ma¹, Yun-Rui Chen¹

¹MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China. zhangjie68@bit.edu.cn.

Chemical Communications (Cambridge, England)

|February 4, 2026

Summary

This summary is machine-generated.

Researchers developed a recyclable pyridinium-based photocatalyst transformed into nanoparticles for selective alcohol oxidation. Water addition enhances singlet oxygen generation, significantly improving reaction selectivity in this novel application.

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Area of Science:

Materials Chemistry
Photocatalysis
Nanotechnology

Background:

Developing efficient and recyclable photocatalysts is crucial for sustainable chemical synthesis.
Selective oxidation of alcohols is a key transformation in organic chemistry.
Controlling reactive oxygen species generation is vital for enhancing photocatalytic efficiency.

Purpose of the Study:

To synthesize pyridinium-functionalized covalent organic frameworks (CPs) and transform them into nanoparticles.
To evaluate the performance of these nanoparticles as recyclable photocatalysts for selective alcohol oxidation.
To investigate the mechanism of singlet oxygen generation and its role in enhancing selectivity.

Main Methods:

Ultrasonic treatment of pyridinium-functionalized CPs to form nanoparticles.
Photocatalytic oxidation reactions using the synthesized nanocatalysts.
Spectroscopic analysis to study singlet oxygen generation mechanism.

Main Results:

Successfully synthesized pyridinium-functionalized CPs as nanoparticles.
Achieved selective alcohol oxidation with a recyclable photocatalyst.
Demonstrated that water addition enhances singlet oxygen (¹O₂) generation via superoxide radical anion (˙O₂^-) and water interactions, boosting selectivity.

Conclusions:

Pyridinium-bearing CPs can be effectively utilized as nanocatalysts for photooxidation.
Water-mediated singlet oxygen generation is a key factor for high selectivity in alcohol oxidation.
This study introduces a novel approach for controlled photooxidation using functionalized nanomaterials.