18593-20-9Relevant articles and documents
Bridge-Caging Strategy in Phosphorus-Substituted Rhodamine for Modular Development of Near-Infrared Fluorescent Probes
Chai, Xiaoyun,Xiao, Jin,Li, Min,Wang, Chaoming,An, Haiyan,Li, Chen,Li, Yuntao,Zhang, Dazhi,Cui, Xiaoyan,Wang, Ting
, p. 14506 - 14512 (2018)
Replacement of the bridging oxygen atom in rhodamine with phosphorus is one of the most efficient ways for bright near-infrared (NIR) fluorophores with wavelengths over 700 nm. However, the organophosphorus bridge is more versatile than just being a spectrum tuner, it is also a profound solubility booster and photostability enhancer, as proved by a series of phosphorus-substituted rhodamines (PRBs). A unique bridge-caging strategy for efficiently manipulating fluorescence has further been innovated in example PRB2. Consistent with theoretical calculations, the formation of organophosphinate by a caging group as a fluorescence-controller locks the spirolactone into a colorless and nonfluorescent form, whereas decaging, a process induced by a specific stimulus, results in a ring-opened form, which yields strong fluorescence. The bridge-caging strategy is feasible for the modular development of NIR probes. Efficient in vivo imaging of photoillumination, hydrogen peroxide, and enzyme have been achieved on the PRB2 scaffold as a photoactivatable fluorophore, PRB2-hν; fluorescent indicator, PRB2-H2O2; and fluorogenic enzyme substrate, PRB2-NTR, respectively.
ANTIBACTERIAL BISMUTH COMPLEXES
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Page/Page column 29, (2016/12/22)
Provided herein are organobismuth (III) phosphinate complexes, which comprise a phosphinate group and an aromatic carbocyclyl or aromatic heterocyclyl group. The complexes find use as antibacterial agents, and accordingly also provided herein are products
PHOSPHORUS-CONTAINING INTERMEDIATE PRODUCTS AND DYES IX. SYNTHESES FROM ARYLDICHLORO- AND DIARYLCHLORO-PHOSPHINES
Kormachev, V. V.,Vasil'eva, T. V.
, p. 681 - 686 (2007/10/02)
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