Poly(phenylene ethynylene)-coated aligned ZnO nanorod arrays for 2,4,6-trinitrotoluene detection

Zhu, Defeng; He, Qingguo; Cao, Huimin; Cheng, Jiangong; Feng, Songlin; Xu, Yuansen; Lin, Tong
December 2008
Applied Physics Letters;12/29/2008, Vol. 93 Issue 26, p261909
Academic Journal
The structure of ZnO nanorods coated with fluorescent polymer poly(phenylene ethynylene) (PPE) have been fabricated for 2,4,6-trinitrotoluene (TNT) detection. In this structure, hydrothermally synthesized crystalline ZnO nanorod arrays were used as waveguides and supporting materials for the TNT sensitive polymer, PPE. The evanescent-wave guiding property of the ZnO nanorod waveguide considerably increased fluorescence intensity. The space between the adjacent nanorods and the larger surface-to-volume ratio of the nanorods enhanced the fluorescence response (quenching) to TNT vapor. This work will contribute to design of combining ZnO nanorod arrays with a functional polymer for sensor applications.


Related Articles

  • Barrier voltage deformation of ZnO varistors by current pulse. Leite, E. R.; Varela, J. A.; Longo, E. // Journal of Applied Physics;7/1/1992, Vol. 72 Issue 1, p147 

    Presents a study that examined the phenomenon of electrical degradation in zinc oxide (ZnO) varistors by application of high-intensity current pulses. Information on the ZnO compound; Effects of several pulses with different intensities and shapes on ZnO; Schematic representation of current pulses.

  • Publisher's Note.  // Applied Physics Letters;5/4/2015, Vol. 106 Issue 18, p1 

    A correction to the article "Significant mobility enhancement in extremely thin highly doped ZnO films" that was published in the April 13, 2015 issue is presented.

  • Self-phase modulation at visible wavelengths in nonlinear ZnO channel waveguides. Teraoka, Edgar Yoshio Morales; Broaddus, Daniel H.; Kita, Tomohiro; Tsukazaki, Atsushi; Kawasaki, Masashi; Gaeta, Alexander L.; Yamada, Hirohito // Applied Physics Letters;8/16/2010, Vol. 97 Issue 7, p071105 

    We report the observation of nonlinear optical effects in the visible spectrum using ZnO channel waveguides. We demonstrate sixfold spectral broadening and a 2Ï€ phase shift due to self-phase modulation in ZnO channel waveguides using femtosecond optical pulses with a center wavelength of 840...

  • Room-temperature nanowire ultraviolet lasers: An aqueous pathway for zinc oxide nanowires with low defect density. Hirano, Shingo; Takeuchi, Nobuo; Shimada, Shu; Masuya, Kyosuke; Ibe, Katsuhiko; Tsunakawa, Hideo; Kuwabara, Makoto // Journal of Applied Physics;11/1/2005, Vol. 98 Issue 9, p094305 

    We report the realization of a low-temperature aqueous pathway for the chemical synthesis of zinc oxide (ZnO) nanowires with low defect density and their room-temperature ultraviolet lasing behavior at low pump fluence. The concentration of solutes determined not only the size of individual...

  • Bias Stability of a-IGZO TFT and a new Shift-Register Design Suitable for a-IGZO TFT. Young Wook Lee; Sun-Jae Kim; Soo-Yeon Lee; Moon-Kyu Song; Woo-Geun Lee; Min-Koo Han // World Academy of Science, Engineering & Technology;Apr2011, Issue 52, p770 

    We have fabricated a-IGZO TFT and investigated the stability under positive DC and AC bias stress. The threshold voltage of a-IGZO TFT shifts positively under those biases, and that reduces on-current. For this reason, conventional shift-register circuit employing TFTs which stressed by positive...

  • High-pressure Pulsed Laser Deposition and Structural Characterization of Zinc Oxide Nanowires. Rahm, Andreas; Nobis, Thomas; Kaidashev, Evgeni M.; Lorenz, Michael; Wagner, Gerald; Lenzner, Jörg; Grundmann, Marius // AIP Conference Proceedings;2005, Vol. 772 Issue 1, p875 

    Various zinc oxide nanostructures have been grown by high-pressure PLD on gold coated sapphire substrates. Depending on growth parameters, a wide range of geometries is obtained in a controlled fashion. The whisker diameter depends on the target-to-substrate distance. The well aligned epitaxial...

  • Visible whispering-gallery modes in ZnO microwires with varied cross sections. Dai, Guozhang; Zhang, Yongyou; Liu, Ruibin; Wan, Qiang; Zhang, Qinglin; Pan, Anlian; Zou, Bingsuo // Journal of Applied Physics;Aug2011, Vol. 110 Issue 3, p033101 

    ZnO microwires with hexagonal, dodecagonal, and circular cross sections were achieved by a micro-environment control vapor deposition method. Laser induced micro-photoluminescence spectra of single wires showed separated emission modes in the visible range, and in which the higher the number of...

  • Tunable ZnO nanostructures for ethanol sensing. Wei-De Zhang; Wen-Hui Zhang; Xue-Yong Ma // Journal of Materials Science;Sep2009, Vol. 44 Issue 17, p4677 

    In this study, ZnO nanostructures with different morphologies including nanorods, nanowires, and nanobrushes were synthesized by a simple hydrothermal process without using any structure-directing reagent. The samples were characterized by X-ray diffraction, field emission scanning electron...

  • Rings, towers, cages of ZnO. Reber, A. C.; Khanna, S. N.; Hunjan, J. S.; Beltran, M. R. // European Physical Journal D -- Atoms, Molecules, Clusters & Opti;Jul2007, Vol. 43 Issue 1-3, p221 

    Theoretical electronic structure studies on (ZnO)n (n= 2–18, 21) have been carried out to show that the transition from an elementary ZnO molecule to the bulk wurtzite ZnO proceeds via hollow rings, towers, and cages. Our first principles electronic structure calculations carried out...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics