Hexafluoroisopropanol (HFIP)-induced sodium dodecyl sulfate/dodecyltrimethylammonium bromide (SDS/DTAB) catanionic surfactant coacervate extraction method coupled with high performance liquid chromatography (HPLC) was used to detect the migration of phthalates from disposable tablewares to drinking water. The concentration factors are larger than 82 and extraction recoveries over 53% for water ...

In this study, self-assembly regenerated silk fibroin (RSF) nanofibers were prepared and observed by Atomic Force Microscope (AFM). Then RSF films containing nanospheres and nanofibers were prepared and dissolved with poly (L-lactide-co-ε-caprolactone) (PLCL) with a blending ratio of 30/70 in hexafluoro-2-propanol (HFIP). In order to determine whether different nanostructures in the solution in...

Sulfonamide gehören zu den wichtigsten funktionellen Gruppen in Pharmazeutika und Agrochemikalien. Es gibt jedoch keine Methode, um die Sulfonamidgruppe direkt eine nicht vorfunktionalisierte aromatische Verbindung einzuführen. Wir stellen hier das erste dehydrierende elektrochemische Verfahren zur Synthese von Sulfonamiden vor, indem inhärente Reaktivität (Hetero)arenen einer hochkonvergenten ...

Half-sandwich iridium complexes bearing bidentate urea-phosphorus ligands were found to catalyze the direct reductive amination of aromatic and aliphatic ketones under mild conditions at 0.5 mol % loading with high selectivity towards primary amines. One was be active in both Leuckart–Wallach (NH4CO2H) type reaction as well hydrogenative (H2/NH4AcO) amination. The protocol ammonium formate does...

Heat-resistant polymers with an intense, visible photoluminescence (PL) functionality are presented. A polybenzoxazole (PBO) containing hexafluoroisopropylidene (HFIP) side groups exhibited intense purple PL a quantum yield, ΦPL, of 0.22 (22%), owing to the effectively disturbed concentration quenching (CQ) in fluorophore units by bulky HFIP groups. The chain ends wholly cycloaliphatic polyimid...

Abstract Multivalente Batterien sind sehr vielversprechend für nachhaltige Energiespeicheranwendungen der nächsten Generation. Hier berichten wir über eine Polytriphenylamin (PTPAn)‐Verbundkathode, die in Lage ist, Tetrakis(hexafluorisopropyloxy)borat [B(hfip) 4 ] − Anionen sowohl Magnesium‐ (Mg) als auch Calcium‐ (Ca) Batteriesystemen hochreversibel zu speichern. Spektroskopische und Computers...

Analysis of a polymer by the LC technique of GPC/SEC reveals information that influences many of the key physical parameters of such material, including strength, brittleness, melt flow, and how easily the material is processed. As such, GPC/SEC is a very important technique for those synthesizing polymers of all kinds. However, for many polymer systems, the choice of solvent for the analysis i...