Stimuli-responsive anion transport utilising caged hydrazone-based anionophores
Manzoor Ahmad1, Martin Flerin1, Hui Min Tay1
1Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK. matthew.langton@chem.ox.ac.uk.
Nanoscale
|October 31, 2024
Summary
Researchers developed novel stimuli-responsive anion transporters using dynamic hydrogen bonding. These synthetic systems, activated by light or hydrogen sulfide (H2S), enable controlled ion transport across membranes for potential therapeutic applications.
Area of Science:
- Supramolecular Chemistry
- Membrane Transport
- Synthetic Biology
Background:
- Ion transport is vital for biological processes, regulated by gating mechanisms in natural channels and pumps.
- Synthetic ion transporters with gating are rare but promising for therapeutics, including anticancer agents and channelopathy treatments.
Purpose of the Study:
- To design and synthesize stimuli-responsive anion transporters.
- To investigate the role of dynamic hydrogen bonding in controlling ion transport.
- To demonstrate light- and H2S-triggered activation of anion transport.
Main Methods:
- Synthesis of hydroxyl-functionalized hydrazone anionophores.
- Utilizing photo- and H2S-responsive protecting groups to modulate hydrogen bonding.
- Investigating anion binding and transport across lipid bilayer membranes.
Main Results:
- Developed anion transporters with tunable gating based on dynamic hydrogen bonds.
- Demonstrated reversible switching of anion transport via light or H2S stimuli.
- Achieved efficient "switch-on" of ion transport across lipid bilayers.
Conclusions:
- Stimuli-responsive anion transporters based on dynamic hydrogen bonding were successfully created.
- This work provides a new platform for developing synthetic ion transport systems with external control.
- Potential applications include targeted drug delivery and sensing.
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