Synthesis of Very Thin 1D and 2D CdWO4 Nanoparticles with Improved Fluorescence Behavior by Polymer-Controlled Crystallization†
Shu-Hong Yu Dr.
Max Planck Institute of Colloids and Interfaces Department of Colloid Chemistry MPI Research Campus Golm, 14424 Potsdam (Germany) Fax: (+49) 331-567-9502
Search for more papers by this authorMarkus Antonietti Prof. Dr.
Max Planck Institute of Colloids and Interfaces Department of Colloid Chemistry MPI Research Campus Golm, 14424 Potsdam (Germany) Fax: (+49) 331-567-9502
Search for more papers by this authorHelmut Cölfen Dr.
Max Planck Institute of Colloids and Interfaces Department of Colloid Chemistry MPI Research Campus Golm, 14424 Potsdam (Germany) Fax: (+49) 331-567-9502
Search for more papers by this authorMichael Giersig Dr.
Hahn-Meitner-Institut, Abt. Physikalische Chemie Glienickerstrasse 100, 15109 Berlin (Germany)
Search for more papers by this authorShu-Hong Yu Dr.
Max Planck Institute of Colloids and Interfaces Department of Colloid Chemistry MPI Research Campus Golm, 14424 Potsdam (Germany) Fax: (+49) 331-567-9502
Search for more papers by this authorMarkus Antonietti Prof. Dr.
Max Planck Institute of Colloids and Interfaces Department of Colloid Chemistry MPI Research Campus Golm, 14424 Potsdam (Germany) Fax: (+49) 331-567-9502
Search for more papers by this authorHelmut Cölfen Dr.
Max Planck Institute of Colloids and Interfaces Department of Colloid Chemistry MPI Research Campus Golm, 14424 Potsdam (Germany) Fax: (+49) 331-567-9502
Search for more papers by this authorMichael Giersig Dr.
Hahn-Meitner-Institut, Abt. Physikalische Chemie Glienickerstrasse 100, 15109 Berlin (Germany)
Search for more papers by this authorWe acknowledge financial support by the Max Planck Society and the DFG (SFB 448). S.-H. Yu thanks the Alexander von Humboldt Foundation for granting a research fellowship. H.C. thanks the Dr. Hermann Schnell Foundation for financial support. Th. Goldschmidt AG, Essen is acknowledged for donation of the PEG-b-PMAA block copolymer. Dr. Jan Rudloff is thanked for the phosphonation of PEG-b-PMAA.
Graphical Abstract
Im Zweistrahlverfahren zu Nanobändern: Definierte, sehr dünne CdWO4-Nanoröhren und -Bänder (im Bild links) lassen sich bei Raumtemperatur und ohne Hilfe eines polymeren Kristallisations-Modifikators durch ein Zweistrahl-Kristallisationsverfahren in wässriger Lösung herstellen. Während es bei weiterem hydrothermalem Reifen zur Umlagerung zu größeren, floßartigen Strukturen kommt, entstehen in Gegenwart von doppelt hydrophilen Blockcopolymeren sehr dünne 2D-Nanokristall-Scheiben (im Bild rechts) und 1D-Nanoröhren mit Durchmessern von 2.5 nm. Diese zeichnen sich durch eine deutlich erhöhte Fluoreszenzausbeute aus.
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