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/npsi/ctrl?action=rtdoc&an=20637155&lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=20637155&lang=fr READ THESE TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS WEBSITE.http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. Questions?Contact the NRC Publications Archive team at PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://doi.org/10.1016/j.eurpolymj.2012.07.003European Polymer Journal, 48, 10, pp. 1717Journal, 48, 10, pp. -1725Journal, 48, 10, pp. , 2012 ABSTRACTPolysulfones with three types of alanyl residues, such as N-!-acetylalanine (Ac-Ala-OH), N-!-benzoylalanine (Bzo-Ala-OH), and N-!-benzyloxycarbonylalanine (Z-Ala-OH), as chiral selectors were prepared by polymer reaction. The resulting modified polysulfones showed chiroptical properties, indicating that the chiral selector residues were successfully introduced into the polysulfone. Nanofiber membranes prepared from the polymeric materials showed adsorption selectivity toward mixtures of racemic Glu, which were adopted as model racemates. Flux values for the nanofiber membranes were enhanced two to three orders of magnitude in comparison with the corresponding typical membranes, but without reduction in permselectivity. In the present study, it is shown that nanofiber is a suitable membrane form not only for molecularly imprinted membranes, but it exhibits enhanced throughput in comparison with typical dense membranes without concurrent reduction in permselectivity.

Particles of the green luminescent Zn2SiO4:Mn having size of 0.3–1.3 µm was directly prepared by spray pyrolysis without post-annealing processes. Characteristics of as-prepared particles such as crystallinity, morphology, and photoluminescence were investigated. Zn2SiO4:Mn particles with spherical morphology, non-aggregation, and having pure willemite was formed at a temperature of 1000–1300°C. The luminescence of the Mn2+ ion in Zn2SiO4 shows an emission band in the 525 nm when excited by 254 nm light.

Polysulfones bearing a derivative of alanyl residue employed as chiral selectors were prepared by polymer modification. The specific rotation ([α]D) of the polysulfone with a derivative of D‐alanyl residue (PSf‐Ac‐D‐Ala) was determined to be 2.87 deg · cm2 · g−1 (c = 1.00 g · dL−1 in DMF) and that with L‐alanyl residue (PSf‐Ac‐L‐Ala) to be ‐2.36 deg · cm2 · g−1 (c = 1.00 g · dL−1 in DMF). The membrane from PSf‐Ac‐D‐Ala preferentially adsorbed the D‐isomer of Glu from racemic mixture of Glu and vice versa. Chiral separation ability was studied by applying a potential difference as a driving force for membrane transport. The permselectivity of PSf‐Ac‐D‐Ala toward D‐Glu (αD/L) was determined to be 1.40, and that of PSf‐Ac‐L‐Ala toward the L‐isomer (αL/D) to be 1.48 at 18.0 V, reflecting their adsorption selectivity. magnified image