title: Mechanically induced multicolor switching based on a single organic molecule.
abstract: Asserting its independence: A single organic molecule containing pyrene and rhodamine B chromophores separated by a peptide spacer formed a mechanochromic material whose fluorescence could be switched from blue to bluish-green and reddish by grinding. Modulation of the overlapped packing pattern of the pyrene excimer for blue emission was crucial for the reversible tricolored switching observed.
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.forename: Mingjun
authors.initials: M
authors.lastname: Teng
authors.forename: Zhijian
authors.initials: Z
authors.lastname: Wang
authors.forename: Shuang
authors.initials: S
authors.lastname: Yang
authors.forename: Xinru
authors.initials: X
authors.lastname: Jia
keywords: chromophores; excimers; mechanochromic fluorescence; ring opening; tricolored switches