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NEW JOURNAL OF CHEMISTRY · 2014 ·Vol. 38 ·期 8 ·3371-3374 · IF 3.159

A specific and rapid “on-off” acenaphthenequinone-based probe for HOCl detection and imaging in living cells

Jie Zhao,Hongjuan Li,Kui Yang,Shiguo Sun,Aiping Lu,Yongqian Xu

A fluorescent probe exhibiting specific and sensitive properties towards HOCl was successfully developed on the basis of the Baeyer–Villiger reaction. It worked well both in solution and on test papers, allowing the facile monitoring of hypochlorite. The probe was further used for imaging in living cells.

CAS / MDL: 82-86-0 7681-52-9 937-14-4 13775-80-9 7758-94-3 5329-12-4 75-91-2 6017-21-6

研究领域: 生物化学 · 分析化学 · 细胞生物学

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TETRAHEDRON LETTERS · 2022 · IF 2.032

Brønsted acidic Heteropolyanion-Based ionic Liquid:A highly efficient Reaction-induced Self-separation catalyst for Baeyer-Villiger reaction

Xiangshan Li,Shihao Liu,Yao Chen,Guangxu Zhang

A novel Brønsted acidic heteropolyanion-based ionic liquid (IL) ([MIMPS] 3 PW 12 O 40 ) was synthesized and employed to catalyze the Baeyer-Villiger (BV) reaction to produce ε-Caprolactone (ε-CL). Noteblely, the prepared IL catalyst exhibited higher catalytic activity compared to solid acid catalysts duo to its behavior of reaction-induced self-separation. It meaned that the IL catalyst could switch from solid to liquid, then back to solid state during the reaction, which broke the limit of the constant heterogeneous state of the catalyst in the reaction system. The characterization results of FT-IR, 1 H NMR, XRD, and XPS indicated that the phosphotungstic anion (PW 12 O 40 3- ) was successfully modified by the organic precursor MIMPS . And TG-DTA and Py-IR results illustrated that the catalyst possessed good thermal stability and Brønsted acidity. Furthermore, the activity evaluation experiment of the catalyst confirmed that the introduced SO 3 H group of the cation part and the active component tungsten of the anion part were the key to the activity of the IL catalyst. More importantly, the synergistic effect between SO 3 H group and the active component tungstencatalyst leading to a superior catalytic performance such as cyclohexanone conversion attained 93.51 % and the yield and selectivity of ε-CL that were up to 93.26 % and 99.73 % under the optimum conditions. Finally, the kinetic process of the BV reaction was appropriately described by the second-order reversible reaction kinetics model and the calculated results were also in good agreement with the experimental datas.

研究领域: 催化化学 · 材料科学

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A specific and rapid “on-off” acenaphthenequinone-based probe for HOCl detection and imaging in living cells

Brønsted acidic Heteropolyanion-Based ionic Liquid:A highly efficient Reaction-induced Self-separation catalyst for Baeyer-Villiger reaction