A facile construction method for pH and oxidation dual-responsive assembly based on ferrocene-modified chitooligosaccharide

Here, we present a novel and facile method for constructing “snowflake-like” assemblies that respond to external stimuli, similar to snowflakes in nature, via the self-organization of ferrocene-modified chitooligosaccharide (FcCOS) in an acid aqueous solution. Interestingly, the snowflakes were sens...

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Bibliographic Details
Published in:Reactive & functional polymers 2014-03, Vol.76, p.1-7
Main Authors: Wang, Liang, Li, Ya-Kun, Xu, Youqian, Wang, Cai-Qi
Format: Article
Language:English
Subjects:
Applied sciences
Assembly
Biodegradable
Biomedical materials
Chitooligosaccharide
Construction
Exact sciences and technology
Hydrogen peroxide
Inorganic and organomineral polymers
Oxidation
Oxidation-responsive
Physicochemistry of polymers
Preparation
Self-assembly
Snowflake-like
Snowflakes
Stimuli
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Summary:Here, we present a novel and facile method for constructing “snowflake-like” assemblies that respond to external stimuli, similar to snowflakes in nature, via the self-organization of ferrocene-modified chitooligosaccharide (FcCOS) in an acid aqueous solution. Interestingly, the snowflakes were sensitive to pH and redox stimuli. They not only formed irregular network-like aggregates when the pH was adjusted to 7.0, they also gradually transformed into loose snowflakes with holes after exposure to air for 5d and totally collapsed after treatment with hydrogen peroxide. Due to their interesting responses to pH and oxidation, these assemblies are a very interesting and promising system for biomaterial applications.
ISSN:1381-5148
DOI:10.1016/j.reactfunctpolym.2013.12.009