Beilstein J. Nanotechnol.2015,6, 617–631, doi:10.3762/bjnano.6.63
arising from sp3 carbon (C–C and C–H functionalities), at 285.9 ± 0.1 eV arising from the C–N species of amines and at 286.6 ± 0.2 eV arising from the C–O contribution of hydroxy groups present in neridronate, the non-hydrolyzed ethoxy groups of APTES and catechols of poly(dopamine). The spectrum of APTES
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Figure 1:
High resolution Ti 2p (left) and O 1s (right) XPS spectra of pristine titanium surfaces (A) and sur...
Beilstein J. Nanotechnol.2014,5, 887–894, doi:10.3762/bjnano.5.101
derivatives, PEG-NH-catechols that can utilize an expanded spectrum of catecholamine chemistry. The PEGs enable simultaneous participation of amine and catechol in quinone tanning crosslinking. The intermolecular reaction between PEG-NH-catechols forms a dramatic nano-scale junction resulting in enhancement
properties of bulk hydrogels.
Keywords: catechols; hydrogels; poly(ethylene glycol)s; quinone tanning; Introduction
Water-resistant adhesives secreted by marine mussels, stiff cuticles synthesized by insects, and sharp beaks found in squids appear to be drastically different biomaterials (Figure 1a–c) [1
result from the ninhydrin test indicated that all amine groups of linear and 6Arm-PEGs had reacted with the catechol derivatives. Control polymers with the absence of secondary amines, linear and 6Arm-PEG-catechols, were prepared by an amide bond forming reaction using the BOP/HOBt/DIPEA coupling with
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Figure 1:
Biomaterials formed by quinone tanning processes found in (a) squid beaks, (b) insect cuticles, and...