Non-porous sphérical polymér particlés for luminéscént solid phase detection reactors

Covalently Bonded Polymeric Zwitterionic Stationary Phase for Simultaneous Separation of Inorganic Cations and Anions

“…[16][17][18][19] The reaction of epoxy groups with nucleophilic functional compounds is a frequently used route in the synthesis of functional polymers. [17][18][19][20][21][22][23] In this case, we chose to use the inner salt of DMAES to couple with epoxide groups in order to obtain a permanent zwitterionic functionality, because the quaternization reaction is known to proceed most efficiently when the tertiary amine is used as the salt. 24 The reactions are outlined in Scheme 1.…”

“…Preparation of the Polymeric Zwitterionic Stationary Phase. In this study, the Spheron particles, which carry 2-hydroxyethyl functional groups, were initially reacted with epichlorohydrin to introduce a surface coverage of epoxide groups. − The reaction of epoxy groups with nucleophilic functional compounds is a frequently used route in the synthesis of functional polymers. − In this case, we chose to use the inner salt of DMAES to couple with epoxide groups in order to obtain a permanent zwitterionic functionality, because the quaternization reaction is known to proceed most efficiently when the tertiary amine is used as the salt . The reactions are outlined in Scheme .…”

Recent Development in Optical Chemical Sensors Coupling with Flow Injection Analysis

“…Some basic requirements must be met by a substrate with immobilized reagent for application in a FI-CL sensor system [128]: (1) the substrate should have high mechanical stability and do not swell in aqueous solutions; (2) there would be low band broadening coupled with minimum back-pressure in a packed bed reactor; (3) for a long lifetime, a substrate with a high surface reagent coverage is preferable; (4) when the immobilized substrate is packed in a flow cell placed in front of the detector, a favourable transparency is essential for high sensitivity; (5) the substrate should exhibit good chemical stability, even at elevated pH conditions, which are frequently required to enable the light-producing reactions.…”

Immobilized 2-(4-hydrazinocarbonylphenyl)-4,5-diphenylimidazole as solid phase luminophore in peroxyoxalate chemiluminescence

“…Fluorescence spectra were obtained with the SPEX equipment described in [22] and a Perkin Elmer instrument described in [33]. The latter was also used for static chemiluminescence measurements with the light source turned off.…”