pH-responsive polysaccharide microcapsules through covalent bonding assembly

Biocompatible and biodegradable microcapsules were fabricated by the covalent assembly of polysaccharides and their derivatives. The formation of Schiff's bases between polysaccharides and their derivatives enabled the microcapsules' autofluorescence properties and pH-responsivity. These polysaccharide microcapsules have great potential applications in biological tracing and drug delivery.