I've at my disposal a hydrogel, which upon addition of a reducing agent is degrading, I want to understand this degradation mechanism (My prediction is that the nature of the hydrogen bonding in the hydrogel is undergoing a change). What is the best technique to characterize hydrogen bonding
Dear Satadru Chakrabarty, different techniques of infra red spectroscopy are used to characterize H-bonds. The fingerprint region is more informative. There are many possible mechanisms to provoke gel degradation, such as disulfide links destruction (if any in your case). Please check the following document. My Regards
https://pubmed.ncbi.nlm.nih.gov/31386880/
I think the following research articles may help you to find an answer to your question.
Article Quantification of Hydrogen Bond Strength Based on Interactio...
Article Theoretical Calculation of Hydrogen-Bonding Strength for Dru...
Article Hydrogen bonding characterization in water and small molecules
Satadru Chakrabarty
Hydrogels usually contain ether and hydroxyl groups. If you are reducing, then you mean the reduction of the ester group to the hydroxyl group. A redox reaction takes place. Hydrogen bond - intermolecular bond. Before the redox reaction, there was predominantly a hydrogen bond of the ether group with water. After the redox reaction, a predominantly hydrogen bond of the hydroxyl group with water appears.
The hydrogen bond energy varies depending on the donor. The acceptor is always a proton. In some cases, in water, the H-bond can be strengthened by the tunneling of a proton along a chain of hydrogen bonds. This can be observed in hydrogels of micellar solutions of ionic surfactants. They belong to the liquid quantum material that we have discovered.
Preprint Strongly correlated electronic states in aqueous micellar su...
Preprint The Role of Zero-Point Energy of Water in Micelle Formation ...
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