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Hydrogels are widely studied as tissue engineering scaffolds, but the biological tissues they are designed to mimic are often complex tissues with non-uniform chemical and mechanical profiles. This work reports a new strategy to create hydrogels composed of a continuous sheet of a single nonfouling but functionalizable material with mechanical and/or chemical functionality gradients. By using different...
We reported previously the design and synthesis of a zwitterionic carboxybetaine dimethacrylate crosslinker, and we showed that its use with zwitterionic carboxybetaine methacrylate led to nonfouling hydrogels with high mechanical properties and high hydration. Now, we use photopolymerization to improve the uniformity of the polymer network, resulting in drastically improved mechanical properties...
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