ZB 06 - Nanoelectrochemistry (W.Nogala)

Photoactive Langmuir-Blodgett, Freely Suspended and Free Standing Films of Carboxylate Ligand-Coated ZnO Nanocrystals

Author(s): Paczesny, Jan and Wolska-Pietkiewicz, Malgorzata and Binkiewicz, Ilona Wadowska, Monika and Wrobel, Zbigniew and Matula, Kinga and Nogala, Wojciech and Lewinski, Janusz and Holyst, Robert
Title: Photoactive Langmuir-Blodgett, Freely Suspended and Free Standing Films of Carboxylate Ligand-Coated ZnO Nanocrystals
Abstract: A new possibility for the formation of macroscopic and photoactive from zinc oxide nanocrystals is described. Photoactive freely and free-standing films of macroscopic area (up to few square and submicrometer thickness (up to several hundreds of composed of carboxylate ligand-coated zinc oxide (RCO2-ZnO NCs) of diameter less than nm are prepared to a modified Langmuir-Schaefer method. First, the suspension RCO2-ZnO NCs is applied onto the air/water interface. Upon the films become turbid and elastic. The integrity of such is ensured by interdigitation of ligands stabilizing ZnO NCs. elasticity allows transfer of the films onto a metal frame as a suspended film. Such membranes are afterward extracted from the frame to form free-standing films of macroscopic area. the integrity of the films is maintained by ligands, no of quantum confinement occurs, and films retain properties of initial RCO2-ZnO NCs. The mechanism of of thin films of RCO2-ZnO NCs at the air/water interface is discussed in detail.
Pages: 13532-13541
Journal: ACS APPLIED MATERIALS \& INTERFACES
Publisher: AMER CHEMICAL SOC
Addres: 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
Volume: 8
ID: ISI:000377150400041
Year: 2016
DOI: 10.1021/acsami.6b03579