Investigation of the TiO2/PPV nanocomposite for gas sensing applications

被引：34

作者：

Baraton, MI

Merhari, L

Wang, JZ

Gonsalves, KE

机构：

[1] Fac Sci, LMCTS, F-87060 Limoges, France

[2] CERAMEC R&D, F-87000 Limoges, France

[3] Univ Connecticut, Inst Mat Sci, Polymer Program, Storrs, CT 06269 USA

[4] Univ Connecticut, Dept Chem, Storrs, CT 06269 USA

来源：

NANOTECHNOLOGY | 1998年 / 9卷 / 04期

关键词：

D O I：

10.1088/0957-4484/9/4/010

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

It is well established that the dispersion of nanosized metal particles in a polymer matrix can induce nonlinear optical properties, yet very little is known about the effect of semiconducting transition metal oxide nanoparticles on luminescence properties of conjugated polymers. In this paper, we report the synthesis of a nanostructured TiO2/poly(p-phenylenevinylene) (PPV) system and show by diffuse reflectance infrared Fourier transform spectrometry that a stable conjugated nanocomposite is obtained. Investigation of the photoluminescence (PL) properties reveals both a broadening and a blueshift of the emission spectra. Adsorption of oxygen is found to be stronger on the nanocomposite than on PPV and to reversibly quench the PL emission, thus suggesting enhanced gas sensing properties. A tentative mechanism explaining the role of n-TiO2 is briefly discussed.

引用

页码：356 / 359

页数：4

共 8 条

[1] FTIR analysis of the surface of nanostructured aluminium nitride powder prepared via chemical synthesis [J].

Baraton, MI ;

Chen, XH ;

Gonsalves, KE .

JOURNAL OF MATERIALS CHEMISTRY, 1996, 6 (08) :1407-1412

[2] PRECURSOR-ROUTE POLY(P-PHENYLENEVINYLENE) - POLYMER CHARACTERIZATION AND CONTROL OF ELECTRONIC-PROPERTIES [J].

BRADLEY, DDC .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1987, 20 (11) :1389-1410

[3] Synthesis and properties of an aluminum nitride polyimide nanocomposite prepared by a nonaqueous suspension process [J].

Chen, XH ;

Gonsalves, KE .

JOURNAL OF MATERIALS RESEARCH, 1997, 12 (05) :1274-1286

[4] Electrically conducting polymers: Science and technology [J].

Epstein, AJ .

MRS BULLETIN, 1997, 22 (06) :16-23

[5]

LUER L, 1997, IN PRESS E MRS P S M

[6]

MANCA J, 1997, IN PRESS E MRS P S M

[7] THE ROLE OF CARBONYL GROUPS IN THE PHOTOLUMINESCENCE OF POLY(P-PHENYLENEVINYLENE) [J].

PAPADIMITRAKOPOULOS, F ;

KONSTADINIDIS, K ;

MILLER, TM ;

OPILA, R ;

CHANDROSS, EA ;

GALVIN, ME .

CHEMISTRY OF MATERIALS, 1994, 6 (09) :1563-1568

[8] Electronic and mechanical properties of nanocrystalline composites when approaching molecular size [J].

Veprek, S .

THIN SOLID FILMS, 1997, 297 (1-2) :145-153

← 1 →