Boronate ester cross-linked PVA hydrogels for the capture and H<sub>2</sub>O<sub>2</sub>-mediated release of active fluorophores
作者:George T. Williams、Adam C. Sedgwick、Sajal Sen、Lauren Gwynne、Jordan E. Gardiner、James T. Brewster、Jennifer R. Hiscock、Tony D. James、A. Toby A. Jenkins、Jonathan L. Sessler
DOI:10.1039/d0cc01904f
日期:——
A new set of H2O2-responsive PVA hydrogels were formed using the boronate fluorescent probe PF1 and the novel boronate fluorescent probe PT1 as the covalent crosslinkers.
作者:S. C. Mitchell、P. Kestell、G. B. Steventon、R. H. Waring
DOI:10.1080/00498250210143038
日期:2002.1
1. Radiolabelled [S-35]-phenothiazine has been administered orally to two healthy adult male volunteers (6 mg kg(-1) body weight). Faeces were the major route of excretion of radioactivity (68%), the remainder being eliminated via the urine (32%) with an estimated urinary half-life (biphasic) of 6-16 h. Over the 5 days of the study a complete recovery of radioactivity was achieved.2. From urinary data, it was shown that metabolism occurred via ring carbon oxidation to form phenothiazone and thionol and via ring sulphur oxidation to form phenothiazine sulphoxide. The majority of urinary material (92%) was present in the form of conjugates of phenothiazine and phenothiazone. Only unchanged phenothiazine was detected in the faeces. Phenothiazine sulphoxide was reduced to phenothiazine during incubation with faecal homogenates.