Construction and function of a highly efficient supramolecular luminescent system. (6th December 2016)

• Record Type: Journal Article
• Authors: Liu, Yingjie; Ma, Suqian; Xu, Bin; Tian, Wenjing
• Is Part Of: Faraday discussions. Volume 196(2017)
• Page Start: 219
• Page End: 229
• Publication Date: 2016-12-06
• Subjects: Chemistry -- Periodicals; Metallurgy -- Periodicals; Electrochemistry -- Periodicals; 540
• DOI: 10.1039/c6fd00166a
• Languages: English
• ISSNs: 1359-6640

Abstract

Abstract : Aggregation-induced emission (AIE) provides a new way of achieving highly efficient luminescent materials. In this contribution, the self-assembly behavior, molecular stacking structure and photophysical properties of two polymorphs of a supramolecular co-crystal (C1 and C2) are investigated. The block-like crystal C1, packed in segregated stacking with strong π–π interactions between theH andG molecules, shows weak green emission with a low efficiency ( Φ F ) of 2%. In comparison, the needle-like crystal C2, packed in segregated stacking with no obviously strong intermolecular interactions, shows bright yellow emission. More importantly, C1 exhibits mechanochromic behavior.