The self-assembly in aqueous solution of PEG (1500 Da) telechelically end-capped with hydrophobic dipeptides has been investigated using spectroscopic, microscopic, scattering, and rheological methods. A self-assembled β-sheet fibril-based hydrogel has been identified (containing dityrosine end groups), which exhibits a gel-sol transition near body temperature. This thermo-responsive PEG-based biofunctional hydrogel is expected to have diverse potential uses in delivery or diagnostics for biomedical applications.
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Hamley et al. (2011) studied this question.
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