Stimuli response of cystamine-core dendrimer revealed by diffusion and NOE NMR studies

Xueyan Feng, Yiyun Cheng, Qinglin Wu, Jiahai Zhang, Tongwen Xu

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Stimuli response behaviors of cystamine-core dendrimer in the presence of several reducing agents including vitamin C, sodium bisulfite, and dl-Dithiothreitol are described. A competitive redox cleavage and supramolecular aggregate formation model is proposed based on PFG NMR and 1H NMR titration experiments. Furthermore, reduction-responsive release of guest molecules from interior pockets of the cystamine-core dendrimer is confirmed by NOE studies. The results suggest that cystamine-core dendrimer is a versatile scaffold or precursor in the design of reduction-sensitive polymeric nanocapsules for biomedical purposes.

Original languageEnglish
Pages (from-to)3777-3783
Number of pages7
JournalJournal of Physical Chemistry B
Volume115
Issue number14
DOIs
StatePublished - 14 Apr 2011

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