Abstract:In this work, a systematic 15N/13C solid-state NMR investigation is performed on three dopamine (DA) conjugates of hyaluronic acid, considered in both its native (HA) and NaIO4-oxidized (HAOx) forms. Two of them, here named HAEDC-DA and HAOx-DA, have been previously introduced as covalent conjugates involving DA amine nitrogen: the former by EDC-mediated amide bond formation, and the latter by reaction of the Schiff base with the aldehyde moieties presumed to exist in HAOx. The third conjugate, HA-DA, is repor… Show more
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