4-Arm-PEG-Catechol

4-Arm catechol-functionalized discrete poly(ethylene glycol) (4-Arm-PEG-Catechol) is a pentaerythritol-cored four-arm precision PEG derivative. All four PEG arms are linked through carbamate bonds to catechol-bearing benzyl termini. Each molecule contains four catechol units. The paired phenolic hydroxyl groups can participate in surface binding, metal coordination, or suitable oxidative crosslinking, enabling multivalent interfacial attachment and dynamic networks. Selecting a defined degree of polymerization for each arm enables comparisons of hydrophilic segment length, spacing between attachment sites, and interfacial interactions. In this series, n denotes the number of ethylene glycol repeat units in each PEG arm.

Customization available.