Pillar[5]arene-based tunable luminescent materials via supramolecular assembly-induced Förster resonance energy transfer enhancement. (10th February 2020)

• Record Type: Journal Article
• Authors: Song, Nan; Lou, Xin-Yue; Yu, Hao; Weiss, Paul S.; Tang, Ben Zhong; Yang, Ying-Wei
• Is Part Of: Materials chemistry frontiers. Volume 4:Number 3(2020)
• Page Start: 950
• Page End: 956
• Publication Date: 2020-02-10
• Subjects: Materials science -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1039/c9qm00741e
• Languages: English
• ISSNs: 2052-1529

Abstract

Abstract : Supramolecular ensembles based on AIE-active pillararenes exhibit strongly enhanced emission accompanied with obvious colour changes upon assembly, where supramolecular assembly-induced enhanced emission and FRET process play key roles. Abstract : Pillar[5]arene tetramers with tetraphenylethene cores and different lengths of alkyl ether chains (H1-4C4P and H2-2C4P ) and a 9, 10-distyrylanthrace-bridged neutral guest linker (DSA-G ) are synthesized to fabricate tunable solid-state fluorescent materials through supramolecular assemblies of DSA-G⊂H1-4C4P and DSA-G⊂H2-2C4P . Their fluorescence emission is strongly enhanced and their colors are changed upon assembly, which can be ascribed to the supramolecular assembly-induced enhanced emission and Förster resonance energy transfer (FRET) processes between H1-4C4P (or H2-2C4P ) and DSA-G . Both ensembles of DSA-G⊂H1-4C4P and DSA-G⊂H2-2C4P exhibit thermo and solvent dual-responsive features, while DSA-G⊂H2-2C4P shows higher sensitivity toward external stimuli as compared to DSA G⊂H1-4C4P due to the shorter distance between fluorophores. The use of these fluorescent materials as inks confirms their efficiencies in the solid-state, paving the way for new potential applications of smart optical materials based on supramolecular assemblies.