Syntheses of water-soluble acyclic naphthalene oligomers and their applications in water
作者:Yang Wang、Tianyin Liu、Jie Jiang、Yanmei Chen、Moupan Cen、Dou Lu、Leyu Cao、Siyu Sun、Yong Yao
DOI:10.1039/c9dt00709a
日期:——
Water-soluble –CH2– bridged acyclic naphthalene oligomers (WN2 and WN3) were designed and prepared successfully. Interestingly, WN3 can be used in reversible dispersion of carbon nanotubes in water by changing the pH efficiently.
We report the design, synthesis, and evaluation of synthetic multifunctional pores with adhesive, that is, electron-deficient naphthalenediimide (NDI) pi-clamps at their inner surface. We find that, in lipid bilayer membranes, comparable synthetic pores with and without pi-clamps have similar, nanomolar activity. Functional relevance of adhesive pi-clamping within synthetic pores is demonstrated by means of an innovative in situ blocker screening method. The obtained line of experimental evidence includes (a) different blockage efficiency with and without pi-clamps (quantified as clamping factors), (b) increasing clamping factors with increasing blocker charge (supportive ion pairing), and, most importantly, (c) increasing clamping factors with increasing aromatic electron donor-acceptor interactions. The availability of advanced synthetic multifunctional pores with refined active sites is important for practical applications in domains such as drug discovery (enzyme inhibitor screening) and diagnostics (multianalyte sensing).
Development of a Selective Enzyme-Linked Immunosorbent Assay for 1-Naphthol-the Major Metabolite of Carbaryl (1-Naphthyl N-Methylcarbamate)
作者:Petra M. Kramer、Maria-Pilar Marco、Bruce D. Hammock
DOI:10.1021/jf00040a019
日期:1994.4
selective enzyme-linked immunosorbent assay for 1-naphthol was developed. Eight rabbits were immunized with either [(5-hydroxy-2-naphthylenyl)oxy]acetic acid (2b)-BSA, [(5-hydroxy-1-naphthylenyl)oxy]acetic acid (4)-BSA, or 5-hydroxy-2-naphthoic acid (7)-KLH, and all sera were screened against 14 different coating antigens. From this screening procedure, five assays could be developed, using two 7-KLH antisera, 3907 and 3909. The assay with the least interference and the best reliability (7-KLH antiserum 3907, 1:9000, and coating antigen 2b-BSA, 1.5 mu g/mL) was further optimized and characterized. It showed an I-50 value of about 72 mu g/L, with a range of detection from 10 to 1000 mu g/L. There was no cross-reactivity with carbaryl, which makes this assay very suitable for the selective detection of 1-naphthol, for example, in undiluted human urine and in soil extract. The assay was tested in organic solvents and showed a tolerance of at least 10% solvent (acetone, acetonitrile, methanol).