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Updated: Aug 11, 2025

Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach
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Cation controlled rotation in anionic pillar[5]arenes and its application for fluorescence switch

Hao Zheng1, Lulu Fu1, Ranran Wang1

  • 1State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 210023, Nanjing, China.

Nature Communications
|February 3, 2023
PubMed
Summary

This study introduces a novel molecular rotor system using pillar[5]arenes (WP5). The rotation of hydroquinone rings in WP5 can be controlled by different counter cations, acting as a tunable cation grease/brake system.

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