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. 2019 Jul 25;24(15):2711. doi: 10.3390/molecules24152711

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

Scheme 4 — Chemical structures of AIE-based iodide chemosensors A21 (a), A22 (b) and A23 (c), with selected sensing mechanisms (for A22 and A23) shown in (b) and (c), respectively. Reproduced with permission from [66,67,68]. Copyright 2016 and 2017, the Royal Society of Chemistry.