Monolayer subnanometric polymersomes with ultrabroad photochromism performance for multichromatic and multimodal information security. - Wu, Pengchao; Sun, Zichao; Li, Guodong; Xu, Zejiang; Sui, Pengliang; Cao, Yunqing; Ding, Mingyu; Zhou, Yongfeng; Lin, Shaoliang; Jin, Haibao (Science China Materials, 2026)