13491-56-0Relevant academic research and scientific papers
“Turn-on” fluorescent sensor for Th4+ in aqueous media based on a combination of PET-AIE effect
Chen, Shibing,Jiang, Shengjie,Guo, Hongyu,Yang, Fafu
, (2021)
Previously reported fluorescent sensors for Th4+ experienced emission quenching or generated false positive signal upon aggregate formation in aqueous media. Herein, a simple and novel thorium sensor (CDB-BA) based on cyanodistyrene structure was designed and synthesized, which integrated the highly emitting characteristic of AIE effect and off-on response of PET modulation for the first time to construct the “turn-on” fluorescent probe for Th4+. Besides excellent selectivity, CDB-BA exhibited remarkable fluorescent enhancement which was linearly related to the concentration of Th4+ in the range of 0.25–8 μM. The detection limit was attained 0.074 μM, which was lower than that of most previously reported sensors. The mechanism of tris-chelate complex of CDB-BA with Th4+ was confirmed by mass spectra, IR spectra and DFT calculation. The excellent Th4+ sensing ability of CDB-BA was successfully applied to detecting Th4+ on TLC plates, in real water samples and living-cell imaging. This work suggested that the combination of AIE and PET photophysical mechanism could offer the merits of minimized background and enhanced signal fidelity to develop novel “turn-on” fluorescent probe in complicated aqueous environment and biological research.
Dual-responding circularly polarized luminescence based on mechanically and thermally induced assemblies of cyano-distyrylbenzene hydrogen bonding liquid crystals
Chen, Shibing,Jiang, Shengjie,Qiu, Jiabin,Guo, Hongyu,Yang, Fafu
supporting information, p. 7745 - 7748 (2020/07/27)
Circularly polarized luminescence controlled by both mechanics and temperature was observed for the first time. The cyano-distyrylbenzene-cholesterol liquid crystals exhibited not only mechanochromism and thermochromism but also mechanically induced and thermally induced circularly polarized.
