Sugars are abundant natural sources existing in biological systems, and bioactive saccharides have attracted much more attention in the field of biochemistry and biomaterials. For better understanding of the sugar-based biomaterials and biological sciences, aggregation-induced emission luminogens (AIE-gens) have been widely employed for detection, tracing, and imaging. This review covers the applications of AIE molecules on sugar-based biomaterials by three parts, polysaccharide, oligosaccharide, and monosaccharide, mainly focusing on saccharide detection, stimuli response materials preparation, bioimaging, and study of the AIE mechanism. These excellent works suggest the promising future of the sugar-based AIE bioconjugates, considering that the naturally designed and elaborately functionalized saccharides play discriminate roles in biological processes and AIE-tagged species may work as an indicator in each case. However, there are a lot of sugar-based biological species that have not been touched, such as mucopolysaccharides and glycoproteins on the cell surface and in the cell plasma. Based on these features, we enthusiastically look forward to more glorious developments in this bright research area.
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