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An unconventional nano-AIEgen originating from a natural plant polyphenol for multicolor bioimaging

Authors
Lu, LeiYang, MengyaoKim, YoungseoZhang, TingtingKwon, NahyunLi, HaidongPark, SungnamYoon, Juyoung
Issue Date
16-2월-2022
Publisher
ELSEVIER
Keywords
aggregation-induced emission; AIE; bioimaging; EGCG; nano-AIEgen; natural products; polyphenols
Citation
CELL REPORTS PHYSICAL SCIENCE, v.3, no.2
Indexed
SCIE
SCOPUS
Journal Title
CELL REPORTS PHYSICAL SCIENCE
Volume
3
Number
2
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/139373
DOI
10.1016/j.xcrp.2022.100745
ISSN
2666-3864
Abstract
Biocompatible aggregation-induced emission (AIE) materials from natural resources are of great interest for a variety of potential applications. Here, we report the unconventional AIE nature of the green tea polyphenol epigallocatechin gallate (EGCG), which is investigated by observing the disappearance and reoccurrence of fluorescence when EGCG is dissolved and recrystallized in aqueous solutions. The intermolecular through-space conjugation and structural rigidification induced by multiple intermolecular H-bonds play critical roles in the AIE phenomenon. This inspires the development of a multicolored, monodisperse, photostable, and non-toxic nano-AIE luminogen (nano-AIEgen), which is simply prepared by polyphenol-amine-based crosslinking in aqueous solutions, demonstrating great potential for living cell bioimaging. Our strategy to develop nano-AIEgens using AIE-active hydrophilic natural products-e.g., plant polyphenols, such as tannic acid, that exhibit similar AIE characteristics-can help push the boundary of the exploration of various novel, large-scale, biocompatible, water-soluble, and degradable AIE materials from natural resources.
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