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Updated: May 14, 2026
08:54
Facile Preparation and Photoactivation of Prodrug-Dye Nanoassemblies
Published on: February 17, 2023
Water-Soluble Ammonium BODIPYs: Synthesis, Photophysics, Photogelation, and Antimicrobial Activity
Qishu He1,2, Amir Sohail1,2, Heather J L Brooks3
1Department of Chemistry, University of Otago, Dunedin, New Zealand.
Chemistry, an Asian Journal
|May 13, 2026
Summary
New cationic ammonium BODIPY compounds act as water-soluble photoinitiators for creating biocompatible hydrogels. Some compounds also exhibit potent antibacterial activity against Staphylococcus aureus.
Area of Science:
- Organic Chemistry
- Materials Science
- Biomedical Engineering
Background:
- Development of novel photoinitiators for hydrogel formation is crucial for tissue engineering and drug delivery.
- Boron-dipyrromethene (BODIPY) dyes offer tunable electronic and photophysical properties.
- Antimicrobial properties are desirable for biomaterials to prevent infections.
Purpose of the Study:
- To synthesize and characterize a family of cationic ammonium BODIPY-NMe2Et complexes.
- To evaluate their potential as water-soluble photoinitiators for biocompatible hydrogel generation.
- To assess their antimicrobial activity against Gram-positive and Gram-negative bacteria.
Main Methods:
- Synthesis of novel cationic ammonium BODIPY complexes.
- Characterization using NMR spectroscopy, mass spectrometry, and X-ray crystallography.
- Evaluation of electronic properties via UV-vis and emission spectroscopy, and DFT calculations.
- Photoinitiation studies for hydrogel formation (Gel-MA, PVA-MA) under visible light.
- Antibacterial assays against Staphylococcus aureus and Escherichia coli.
Main Results:
- Successfully synthesized and characterized a series of water-soluble cationic ammonium BODIPY compounds.
- Demonstrated photoinitiation of hydrogel formation using Gel-MA and PVA-MA in aqueous conditions.
- Identified several hydrophobic BODIPY derivatives with significant bactericidal activity against S. aureus.
Conclusions:
- Cationic ammonium BODIPY complexes are effective photoinitiators for generating biocompatible hydrogels.
- The developed BODIPY system shows promise for antimicrobial applications, particularly against Gram-positive bacteria.
- Further optimization is needed to match the efficiency of existing photocatalysts like [Ru(bipy)3]2+.
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