title: A Mechanochromic Single Crystal: Turning Two Color Changes into a Tricolored Switch.
abstract: The single crystal of M-4-B was obtained by attaching the boron of BH3 to the amine linker between a tetraphenylethylene (TPE) unit and rhodamine B. M-4-B showed a novel sequential tricolor switching from dark blue to bluish-green and to a reddish color upon grinding. The boron atom played a key role in developing the single crystal.
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of the Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (China).
authors.forename: Zhiyong
authors.initials: Z
authors.lastname: Ma
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of the Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (China).
authors.forename: Zhijian
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of the Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (China).
authors.forename: Xiao
authors.initials: X
authors.lastname: Meng
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871 (China).
authors.forename: Zhimin
authors.initials: Z
authors.lastname: Ma
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of the Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (China).
authors.forename: Zejun
authors.initials: Z
authors.lastname: Xu
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of the Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (China).
authors.forename: Yuguo
authors.initials: Y
authors.lastname: Ma
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of the Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (China). xrjia@pku.edu.cn.
authors.forename: Xinru
authors.initials: X
authors.lastname: Jia
keywords: boron; mechanochromic fluorescence; multicolored switch; rhodamine B; single crystals