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π-Extended chalcogenoviologens with stable radical state enable enhanced visible-light-driven hydrogen evolution and static/dynamic electrochromic displays†
Guoping Li, Ruitong Song, Wenqiang Ma, Xu Liu, Yushuo Li, Bin Rao and Gang He*

https://pubs.rsc.org/en/content/articlelanding/2020/TA/D0TA02930K#!divAbstract