Thin ilms of pure tetrakis-(isopropoxy-carbonyl)-copper-phthalocyanine (TIPCuPc), a novel functionalized phthalocyanine, and its hybrid junctions with rod-like TiO2 nanocrystals (NCs) were deposited in order to elucidate their properties and application in piezoelectric chemical sensors. The strong tendency of the phthalocyanine to assembly was conirmed at the air/water interface by advanced Brewster Angle Microscopy (BAM) and UV-vis relection spectroscopy techniques. In particular, H-type aggregates, in situ and at the air/water interface, self-associate in aligned 3D bulky domains. The characteristics of the molecule and of the assemblies were studied in the solid state by means of UV-vis spectroscopy, Attenuated Total Relection Fourier Transform Infrared (ATR-FTIR) spectroscopy and Atomic Force Microscopy (AFM). These studies prompted investigation of the operating conditions to process the bare TIPCuPc and related TiO2 NC-based hybrid junctions as sensing active layers for phenol pollutants integrated in a Quartz Crystal Microbalance (QCM). Interestingly, the preferentially oriented phthalocyanine LB-ilm undergoes chemical interactions with the NC ilm, which enhances the sensitivity of the QCM sensor.
Tetrakis-(isopropoxy-carbonyl)-copper-phthalocyanine thin films: deposition, characterization and application
GIANCANE, Gabriele;VALLI, Ludovico
2010-01-01
Abstract
Thin ilms of pure tetrakis-(isopropoxy-carbonyl)-copper-phthalocyanine (TIPCuPc), a novel functionalized phthalocyanine, and its hybrid junctions with rod-like TiO2 nanocrystals (NCs) were deposited in order to elucidate their properties and application in piezoelectric chemical sensors. The strong tendency of the phthalocyanine to assembly was conirmed at the air/water interface by advanced Brewster Angle Microscopy (BAM) and UV-vis relection spectroscopy techniques. In particular, H-type aggregates, in situ and at the air/water interface, self-associate in aligned 3D bulky domains. The characteristics of the molecule and of the assemblies were studied in the solid state by means of UV-vis spectroscopy, Attenuated Total Relection Fourier Transform Infrared (ATR-FTIR) spectroscopy and Atomic Force Microscopy (AFM). These studies prompted investigation of the operating conditions to process the bare TIPCuPc and related TiO2 NC-based hybrid junctions as sensing active layers for phenol pollutants integrated in a Quartz Crystal Microbalance (QCM). Interestingly, the preferentially oriented phthalocyanine LB-ilm undergoes chemical interactions with the NC ilm, which enhances the sensitivity of the QCM sensor.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
