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. 2020 Feb 28;6(9):eaay8541. doi: 10.1126/sciadv.aay8541

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Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 5 — (A) Space-filling model of the inner core of 1 and 2. (B) Absorption spectra of 1 (yellow) and 2 (purple). (C) Photographic images of solutions of 1 and 2 under ambient light. (D) PL spectra of 1 (green) and 2 (purple). (E) Photographic images of solutions of 1 and 2 under ultraviolet light at 365 nm. Photo credits: Yuan-Zhi Tan, Xiamen University.