New Hybrid Films Based on Cellulose and Hydroxygallium Phthalocyanine. Synergetic Effects in the Structure and Properties

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• 作者：Vicente Parra ; Manuel Rei Vilar ; Nicolas Battaglini ; Ana M. Ferraria ; Ana M. Botelho do Rego ; Sami Boufi ; Mar&iacute ; a L. Rodr&iacute ; guez-Mé ; ndez ; Egils Fonavs ; Inta Muzikante ; Marcel Bouvet
• 刊名：Langmuir
• 出版年：2007
• 出版时间：March 27, 2007
• 年：2007
• 卷：23
• 期：7
• 页码：3712 - 3722
• 全文大小：462K
• 年卷期：v.23,no.7(March 27, 2007)
• ISSN：1520-5827

文摘

Hydroxygallium phthalocyanine (HOGaPc) and cellulose (from a trimethylsilyl derivative) have been used as nativeelements for the preparation of a novel family of hybrid films. By spin-coating, both components allow the buildingof films with different configurations on various substrates in a controlled way. The particularities of these hybridfilms have been characterized by a range of techniques such as Fourier transform infrared spectroscopy (FTIRS) inattenuated total reflection using multiple internal reflections (ATR/MIR), absorption ultraviolet and visible spectroscopy(UV-vis), X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), and surface potential measurementsusing the Kelvin-Zisman vibrating capacitor probe (KP). This enabled determination of the influence of celluloseon the arrangement of HOGaPc and, consequently, control of the relation between the structure and the propertiesof the films. Finally, gas sensor tests were performed to check the potentialities of these hybrid films. In particular,the synergetic behavior between the film-forming materials allows a fast and sensible change in surface potential aftercyclic exposures to ozone (O₃, 100 ppb) and nitrogen. Overall, we present the advantages of combining phthalocyaninewith cellulose in enhancing the properties of the final product. Introduction of cellulose as a host material opens upa new area of hybrid films.