4 years ago

Tunable AICPL of (S)-Binaphthyl-Based Three-Component Polymers via FRET Mechanism

Tunable AICPL of (S)-Binaphthyl-Based Three-Component Polymers via FRET Mechanism
Ziyu Wang, Yixiang Cheng, Yuxiang Wang, Yiwu Quan, Shuai Liu
Five three-component chiral polymers incorporating (S)-1,1′-binaphthyl, tetraphenylethene (TPE) and fluorene moieties are designed and synthesized by Pd-catalyzed Sonogashira reaction. All these polymers show obvious aggregation induced emission enhancement response behavior in the fluorescence emission region of 460–480 nm. Interestingly, three of them show aggregation-induced circularly polarized luminescence (AICPL) signals in tetrahydrofuran–H2O mixtures. Most importantly, these AICPL signals can be tuned by changing the molar ratios of TPE and fluorene components through fluorescence resonance energy transfer and give the highest glum = ±4.0 × 10−3. This work provides a novel strategy for developing AICPL-enhanced materials. A novel strategy for developing aggregation-induced, circularly polarized luminescence (CPL)-enhanced materials via fluorescence resonance energy transfer (FRET) mechanism is carried out. The CPL signal can be easily tuned by changing the molar ratios of tetraphenylethene and fluorene moieties (FRET acceptor and donor) and gives the highest glum = ±4.0 × 10−3.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/marc.201700150

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