Bright Light Emission of a Single Polythiophene Nanotube Strand with a Nanometer‐scale Metal Coating

Joo, Jinsoo; Park, D. H.; Jeong, Mi Yun; Lee, Y. B.; Kim, Heenam Stanley; Choi, Won Jun; Park, Q.-H.; Kim, H.-J.; Kim, D.-C.; Kim, J.

doi:10.1002/adma.200700479

Cited by 56 publications

(30 citation statements)

References 26 publications

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“…The PTh nanoparticles still remain well dispersed in pure water and alcohol even after removal of the CTAB from the nanoparticles. [30] During thiophene polymerization, CTAB clearly acts as the dispersant instead of the emulsifier in CH 3 CN because CTAB could not form regular stable micelles in the two-phase system. This could explain why the particles obtained were not all spherical as in emulsion polymerization.…”

Section: Structure Of Pth Nanoparticlesmentioning

confidence: 99%

Facile Optimal Synthesis of Inherently Electroconductive Polythiophene Nanoparticles

Huang

2009

Chemistry A European J

109

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The straight dope: Polythiophene (PTh) nanoparticles with a narrow size distribution were successfully synthesized by a chemical oxidative polymerization (see image). The highest conductivity of virgin PTh is 3.1x10(-4) S cm(-1) and can be dramatically enhanced to 50 S cm(-1) by doping in iodine vapor.Polythiophene (PTh) nanoparticles were successfully synthesized by a simple chemical oxidative polymerization in the presence of a very small amount of cetyltrimethylammonium bromide (CTAB). The polymerization yield, particle size, bulk electrical conductivity, and solubility of the PTh nanoparticles have been optimized by adjusting the CTAB/FeCl(3) oxidant/thiophene monomer ratio, thiophene concentration, polymerization temperature, and reaction time. The structure of the PTh nanoparticles was systematically characterized by IR and UV/Vis spectroscopy, wide-angle X-ray diffraction, laser particle-size analysis, field-emission scanning electron microscopy (SEM), and transmission electron microscopy (TEM). It was found that the number-average diameter (D(n)) and size polydispersity index (PDI) of the particles decrease significantly from 4.19 microm and 1.21 to 203 nm and 1.056, respectively, with a slightly increasing CTAB concentration. SEM and TEM reveal that the PTh particle size is reduced to 67 and 36 nm, respectively. The conductivity increases on raising the FeCl(3)/thiophene ratio or on lowering the CTAB concentration and polymerization temperature. A moderate monomer concentration and polymerization time are very beneficial for achieving highly conducting PTh. The highest conductivity of virgin PTh is 3.1x10(-4) S cm(-1) and can be further elevated to 50 S cm(-1) by doping in iodine vapor. Under optimized polymerization conditions, the significant variation of the conductivity of the PTh particles in virgin and doped states was well confirmed by the intensity and wavelength of the UV/Vis spectral band owing to the large pi conjugation. The PTh particles demonstrate uncommon characteristics including easy synthesis, low cost of production, large pi-conjugated structure, high conductivity, solution processability, and extensive potential for further application.

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Section: Structure Of Pth Nanoparticlesmentioning

confidence: 99%

Facile Optimal Synthesis of Inherently Electroconductive Polythiophene Nanoparticles

Huang

2009

Chemistry A European J

109

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“…10,16 In the latter case, the increase in PL efficiency is often accompanied by a significant blue shift in the emission spectrum. More exotically, sheathing polythiophene nanowire structures with plasmon supporting noble metals 17 can also enhance the emission, via plasmon outcoupling effects.…”

Section: Introductionmentioning

confidence: 99%

Efficient optical gain media comprising binary blends of poly(3-hexylthiophene) and poly(9,9-dioctylfluorene-co-benzothiadiazole)

Xia

Stavrinou

Bradley

et al. 2012

Journal of Applied Physics

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Articles you may be interested inImprovement in power conversion efficiency by blending of poly(3,4ethylenedioxythiophene):poly(styrenesulfonate) into poly(3-hexylthiophene):phenyl-C61-butyric acid methyl ester active layer Appl. Phys. Lett. 100, 223901 (2012); 10.1063/1.4723571High-efficiency blue multilayer polymer light-emitting diode based on poly(9,9-dioctylfluorene) Efficient blue-green and white light-emitting electrochemical cells based on poly[9,9-bis(3,6-dioxaheptyl)fluorene-2,7-diyl]We report the results of a study of the optical gain properties of binary blend films of regioregular poly(3-hexylthiophene) (RR-P3HT) and poly(9,9-dioctylfluorene-co-benzothiadiazole) (F8BT). Efficient optical gain is observed in the 10-20 wt. % RR-P3HT composition range and can be tuned to the $650 nm window utilised for polymer optical fibre data-communications, with maximum gain $50 cm À1 . At higher P3HT fractions, gain thresholds increase substantially, consistent with the observed concomitant improvement in photocharge generation. Distributed feed back lasers with one-dimensional gratings exhibit pump pulse thresholds as low as 8 nJ (26 lJ cm À2 , 2.17 kW cm À2 ), lower than many other polymer-based gain media in this wavelength range. They also provide relatively high slope efficiencies >2%. The confluence of efficient optical gain with electronic properties that are conducive to charge carrier injection and transport is relatively novel and is expected to be a necessary requirement for the achievement of electrically pumped lasing. V C 2012 American Institute of Physics. [http://dx.

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“…First, we will attempt to modify the polypyrrole polymer [5] occupying the gap to incorporate a fluorescent/gain molecule. We will also attempt to deposit other luminescent materials in the space including CdSe and Polythiophene [6].…”

Section: Optical Propertiesmentioning

confidence: 99%

Arrays of plasmonic nanocavities for non-linear light interactions

Murphy

Sonnefraud

Ginzburg

et al. 2013

2013 7th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics

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Here we present a plasmonic metamaterial consisting of a large-scale array of gold coaxial rod-tube (CRT) nanocavities. The CRT nanocavities were fabricated using an anodized alumina template. The etching process used in the fabrication process can create 5nm cavities, smaller than conventional top-down techniques. The large electric-field enhancements associated with nanometersized gaps and the tunability of the modes excited in the structure show potential for applications in non-linear optics including second harmonic generation (SHG) and surface enhanced Raman spectroscopy (SERS).

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Bright Light Emission of a Single Polythiophene Nanotube Strand with a Nanometer‐scale Metal Coating

Cited by 56 publications

References 26 publications

Facile Optimal Synthesis of Inherently Electroconductive Polythiophene Nanoparticles

Facile Optimal Synthesis of Inherently Electroconductive Polythiophene Nanoparticles

Efficient optical gain media comprising binary blends of poly(3-hexylthiophene) and poly(9,9-dioctylfluorene-co-benzothiadiazole)

Arrays of plasmonic nanocavities for non-linear light interactions

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