Optical properties of P3HT:tributylphosphine oxide-capped CdSe nanocomposites

Benchaabane, Aïda; Hamed, Zied Ben; Lahmar, A.; Sanhoury, M. A. K.; Kouki, Fayçal; Zellama, K.; Zeinert, A.; Bouchriha, H.

doi:10.1007/s00339-016-0244-z

Cited by 9 publications

(6 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The capping agent is then substituted with a smaller ligand such as pyridine upon formation of a more optically efficient hybrid system [17]. Recently, we have shown that the fabrication of the less bulky TBPO-capped CdSe and ZnSe nanoparticles-organic polymer hybrid system does not require the capping agent substitution step, yielding comparable efficiency to that containing pyridine as the surfactant [18,19]. As some metal complexes could be used as single source precursors for the preparation of such nanoparticles, the synthesis and investigation of the chemistry of new related metal complexes would be of particular interest.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, structures, and DFT study of zinc(II) complexes with tributylphosphine chalcogenides

Gouid¹,

Sanhoury

Said³

et al. 2017

Journal of Coordination Chemistry

View full text Add to dashboard Cite

Four new zinc(II) complexes of the type [ZnCl2(n-Bu3PE)2] (E = O (1), S (2), Se (3) or Te (4)) have been synthesized from zinc(II) chloride and the ligands n-Bu3PE giving yields of 56-88%. The adducts were characterized by multinuclear (31 P, 13 C and 77 Se) NMR, conductivity, IR spectroscopy and by X-ray analyses. The zinc complexes 1-4 are comprised of two ligands coordinated to the metal centre in a distorted tetrahedral arrangement. The P=E bond lengths of 1.497(7) (E = O), 2.000(4) (E = S) and 2.178(2)Å (E = Se) in these complexes are slightly elongated compared to those in the free ligand. In addition, a DFT/B3LYP theoretical study on the geometry optimization of the title ligands and their zinc complexes has been carried out in order to support and complement the experimental data and to further investigate the nature of the chalcogenide-metal interaction. The results show good agreement between the experimental and theoretical data.

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, structures, and DFT study of zinc(II) complexes with tributylphosphine chalcogenides

Gouid¹,

Sanhoury

Said³

et al. 2017

Journal of Coordination Chemistry

View full text Add to dashboard Cite

show abstract

“…It has been found that the Urbach's energy is 0.55 eV for P3HT and 0.43 eV for PPy. The high values of Urbach's energy compared to the previously reported one [63] may be an additional reason for lowering the band gap. The origin of Urbach's energy is a defect owing to the presence of impurities that create a localized state inside the band gap.…”

Section: Optical Propertiesmentioning

confidence: 63%

Optical properties and dielectric relaxation of polypyrrole and poly (3-hexylthiophene)

Mohamed,

Rehim,

Hameed

et al. 2023

Phys. Scr.

View full text Add to dashboard Cite

In the present work polypyrrole (PPy) and poly (3-hexylthiophene) (P3HT) are prepared via oxidation polymerization, their optical and dielectric properties in comparison with their originating monomers are investigated. The chemical structure of both polymers is confirmed by FTIR spectroscopy. Investigation of optical properties of the prepared polymers showed that the band gap of PPY is 1.25 eV, whereas that of P3HT is 1.79 eV. In addition, P3HT showed a refractive index of high values in the visible region compared to PPy. Dielectric relaxation of both monomers and polymers was studied in the frequency range of 10-1  /Hz <107 for comparison. Furthermore, temperature dependencies of their electrical properties are investigated. The DC conductivity values of PPy and P3HT are found to be 2× 10-7 S/cm and 2× 10-4 S/cm, at T = 313 K, respectively, which is the ranges of semiconductors and conductors reflecting the remarkable enhancement of conductivity according to polymerization process. The temperature dependence of the DC conductivity for the monomers and polymers follows Vogel−Fulcher−Tammann (VFT) equation. The parameters of the frequency-dependent provide basic information for adjustment of the structural properties of the conjugated polymers and finding the theoretical limits controlling the charge transport

show abstract

“…Table 1 shows an increase in the values of E u of the nanocomposites from 2197 meV, for sample C1, to be 2262 meV, for sample C3. This can be due to inducing disorders in PEDOT-PSS by the embedded Au NSs which appears in the band gap in the form of localized states depending on the size of Au NSs [24]. However, the observed low values of the Urbach energy of all nanacomposites compared to that of their hosting polymer (2566 meV) may be attributed to forming clusters by incorporating Au NSs [25].…”

Section: Optical Propertiesmentioning

confidence: 99%

Effect of Gold Nanoparticles on the Physical Properties of Poly (3,4-ethylenendioxythiophene): Poly(styrene sulphonate) and its Gas Sensor Application

Ahmed

2018

Arab Journal of Nuclear Sciences and Applications

View full text Add to dashboard Cite

Conducting polymers offer a unique combination of properties that make them promising candidate materials for electronic applications. Poly (3,4-ethylene dioxythiophene): poly(styrene sulphonate) (PEDOT-PSS) is one of conducting polymers that has excellent qualities to be incorporated into many organic devices as helping in the charge transfer. In this study, different sizes of gold nanosphers (Au NSs) have been embedded into the PEDOT-PSS to improve its physical properties by forming nanocomposites. Au NSs, which exhibit tunable absorption depending on their size, have effectively improved the absorbance of PEDOT-PSS. The energy gap and the Urbach energy of PEDOT-PSS have decreased from 3.45 eV and 2566 meV, respectively, to be 3.36 eV and 2262 meV, respectively, for the biggest size of (Au NSs) embedded in PEDOT-PSS. Also, the absorption edge value of the nanocomposite with the biggest size was 3.05 eV whereas PEDOT-PSS has the value of 3.46 eV. Embedding Au NSs in PEDOT-PSS has caused an enhancement of the electrical conductivity of the produced nanocomposites. Lowering the gas sensitivity of PEDOT-PSS to volatile organic compound (VOCs) by embedding it with (Au NSs) can suggest this nanocomposite to be applied in electronic devices.

show abstract

Optical properties of P3HT:tributylphosphine oxide-capped CdSe nanocomposites

Cited by 9 publications

References 43 publications

Synthesis, characterization, structures, and DFT study of zinc(II) complexes with tributylphosphine chalcogenides

Synthesis, characterization, structures, and DFT study of zinc(II) complexes with tributylphosphine chalcogenides

Optical properties and dielectric relaxation of polypyrrole and poly (3-hexylthiophene)

Effect of Gold Nanoparticles on the Physical Properties of Poly (3,4-ethylenendioxythiophene): Poly(styrene sulphonate) and its Gas Sensor Application

Contact Info

Product

Resources

About