Photoluminescence studies in HCl-doped polyaniline nanofibers

被引：35

作者：

Banerjee S. ^{[1
]}

Sarmah S. ^{[1
]}

Kumar A. ^{[1
]}

机构：

[1] Material Research Laboratory, Dept. of Physics, Tezpur University, Tezpur

来源：

Journal of Optics | 2009年 / 38卷 / 2期

关键词：

Photoluminescence; Polyaniline nanofibers; TEM; UV-Visible; XRD;

D O I：

10.1007/s12596-009-0011-z

中图分类号：

学科分类号：

摘要：

In the present work polyaniline (PAni) nanofibers have been synthesized by interfacial polymerization technique. Pellets are made from PAni nanofibers and characterized by XRD, TEM, UV-Vis spectroscopy, Photoluminescence spectroscopy and Four-probe conductivity measurements. XRD results show the increase in the degree of crystallinity with the increase of concentration of dopant acid. It also shows peak broadening, which indicates reduction of fiber diameter with increasing dopant concentration. TEM micrograph confirms the formation of PAni nanofibers of diameter around 20-30 nanometer. The UV-Visible spectra show three prominent peaks at 320nm, 430nm and 800nm, which confirm the formation of a single broad polaronic band in the band-gap of the PAni nanofibers. Four-probe measurements show that the electrical conductivity of PAni nanofibers increases with doping. PL spectra show a broad peak in violet region (λ = 405nm) and indicate a decrease of fiber diameter with the increase in HCl concentration. © 2009 Optical Society of India.

引用

页码：124 / 130

页数：6

共 13 条

[1]

Ko F.K., Nanofiber Technology: Bridging the gap between nano and macro world, Nanotechnology Research Directions: IWGN Workshop Report, (1999)

[2]

Huang W.S., Humphrey B.D., MacDiarmid A.G., Polyaniline, novel conducting polymer, J. Chem. Soc., Faraday Trans., 1, 82, (1986)

[3]

MacDiarmid A.G., Polyaniline and polypyrrole: Where are we headed?, Synth. Met., 84, (1997)

[4]

MacDiarmid A.G., Et al., Polyaniline: Interconversion of Metallic and Insulating Forms, Mol. Cryst. Liq. Cryst., 121, (1985)

[5]

Huang J., Synthesis and applications of conducting polymer polyaniline nanofibers, Pure Appl. Chem., 78, 1, (2006)

[6]

Chandrasekhar P., Conducting Polymers, Fundamentals and Applications: A Practical Approach, (1999)

[7]

Zhou Y., Freitag M., Hone J., Staii C., Johnson Jr.A.T., Pinto N.J., MacDiarmid A.G., Fabrication and electrical characterization of polyaniline-based nanofibers with diameter below 30 nm, Appl Phys Lett, 83, 18, (2003)

[8]

Huang J., Kaner R.B., A General Chemical Route to Polyaniline Nanofibers, Journal of the American Chemical Society, 126, 3, pp. 851-855, (2004)

[9]

Tseng R.J., Huang J., Ouyang J., Kaner R.B., Yang Y., Polyaniline nanofiber/gold nanoparticle nonvolatile memory, Nano Letters, 5, 6, pp. 1077-1080, (2005)

[10]

Li M., Guo Y., Wei Y., MacDiarmid A.G., Lelkes P.I., Electrospinning polyaniline-contained gelatin nanofibers for tissue engineering applications, Biomaterials, 27, 13, pp. 2705-2715, (2006)

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