Adsorption mechanism and valency of catechol-functionalized hyperbranched polyglycerols

• Stefanie Krysiak,
• Qiang Wei,
• Klaus Rischka,
• Andreas Hartwig,
• Rainer Haag and
• Thorsten Hugel

Beilstein J. Org. Chem. 2015, 11, 828–836, doi:10.3762/bjoc.11.92

• microscopy (AFM). The comparison of single catechols (dopamine) with multiple catechols on hyperbranched polyglycerols (hPG) at various pH and dwell times allowed us to further increase our understanding. In particular, we were able to elucidate how to achieve strong bonds of different valency. It was

• concluded that hyperbranched polyglycerols with added catechol end groups are promising candidates for durable surface coatings. Keywords: adhesion; atomic force microscopy; catechol; hyperbranched polyglycerols; valency; Introduction While underwater glues are still a challenge for industrial adhesive

• pN peak to the catechol/titanium dioxide interaction and the shoulder at 700 pN to the interaction of multiple catechols. In a next step, the hyperbranched polyglycerols (hPGs) with different amounts of catechol end groups were desorbed from TiO2. The measurements were again performed with a pulling