Synthesis and photoluminescence properties of polycarbazole/tin oxide (PCz/SnO2) polymer nanocomposites

Horti, N. C.; Kamatagi, M. D.; Patil, N. R.; Nataraj, Sanna Kotrappanavar; Patil, S. A.; Inamdar, Sanjeev R.

doi:10.1007/s00289-020-03428-5

Cited by 17 publications

(16 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It can observed that the crystallite size of PCz is less compared to composites, crystallite size is increasing and micro strain is decreasing with wt% of dopants which con rms encapsulation of polycarbazole on the dopant particles. These are in qualitative agreement with the literature on PCz/SnO 2 [24].…”

Section: Resultssupporting

confidence: 92%

“…Similar nature of results were reported for PCz/SnO 2 and PVA/CuO [24,28]. The Urbach energy (E u ) was determined by plotting ln(α) versus hν as depicted in Fig.…”

Section: Uv-vis Absorption Analysissupporting

confidence: 72%

“…Where, K is a constant called shape factor equal to 0.9 for spherical shaped particles [24], λ is wavelength of X-ray ( 1.5406Å), ß is full width half maximum and θ position of the peak. The prominent peak for each sample was considered for determining crystallite size and micro strain.…”

Section: Resultsmentioning

confidence: 99%

“…48-1548 and 89-8104 respectively [19,23]. The peaks at 19.03, 20.01, 21.16, 23.16, 28.12̊ correspond the planes (2 0 -1), (1 2 -1), (2 2 0), (0 1 2), (2 1 0) of polycarbazole [24]. The increase in peak intensity with increasing concentration of CuO and Fe 2 O 3 con rms interaction of dopants with PCz.…”

Section: Measurementsmentioning

confidence: 99%

“…A broad band is observed at 279nm in pure polycarbazole is assigned to bonding and antibonding (π-π*) transition of the benzoid ring and small peak around 347nm is corresponding to polaronic energy level (n-π*) transition of the quinoid ring. The polaronic energy level is created by the formation of defects during polymerization process [24,26]. It is observed that the peaks are slightly shifted to blue end about 4nm for CuO composites and to 8nm for Fe 2 O 3 composites of spectrum and also there is variation in the intensity with different concentration of CuO and Fe 2 O 3 .…”

Section: Uv-vis Absorption Analysismentioning

confidence: 99%

See 4 more Smart Citations

Structural, Optical and Electrical Conductivity Studies in Polycarbazole and Its Metal Oxide Nano Composites

Talari

Raghavendra

Malge

2021

Preprint

View full text Add to dashboard Cite

Polycarbazole (PCz) has been synthesized by chemical oxidation method using APS as an oxidizing agent and PCz/CuO and PCz/Fe2O3 nanocomposites by in situ polymerization method for different wt% of CuO and Fe2O3 at room temperature. XRD patterns confirmed crystalline nature of samples. FTIR indicated strong interaction between PCz and nano fillers. The morphological and optical absorption studies were carried out using SEM and UV-Vis respectively. Addition of CuO or Fe2O3 to PCz decreased its direct and indirect band gaps. However, band gap showed a small change with dopant contents up to 30%. Urbach energy decreased with the addition of dopants. But Urbach energy of the composites increased with increasing dopants content from 10 to 30%. DC conductivity of PCz and its nanocomposites has been measured by following two probe technique in the temperature range from 300 K to 423 K. he conductivity of both the nanocomposites is found to be less than the pure PCz and it is found to increase with wt% of CuO or Fe2O3 as the case may be. The activation energy has been determined by fitting Arrhenius expression to the dc conductivity data at high temperature. The activation energy of polycarbazole is determined to be less than that of the composites. In both the composites, activation energy decreased and conductivity increased with the increase of dopant content.

show abstract

Section: Resultssupporting

confidence: 92%

“…Similar nature of results were reported for PCz/SnO 2 and PVA/CuO [24,28]. The Urbach energy (E u ) was determined by plotting ln(α) versus hν as depicted in Fig.…”

Section: Uv-vis Absorption Analysissupporting

confidence: 72%

Section: Resultsmentioning

confidence: 99%

Section: Measurementsmentioning

confidence: 99%

Section: Uv-vis Absorption Analysismentioning

confidence: 99%

See 3 more Smart Citations

Structural, Optical and Electrical Conductivity Studies in Polycarbazole and Its Metal Oxide Nano Composites

Talari

Raghavendra

Malge

2021

Preprint

View full text Add to dashboard Cite

show abstract

Ultrasound and Pressure Assisted Solid‐State Polymerization of Carbazole

2023

View full text Add to dashboard Cite

This study was carried out with the aim of obtaining polycarbazole (PCz) with solid-state polymerization by using ultrasound and pressure assisted methods. For ultrasoundassisted method (U), first, the optimum carbazole (Cz) and cerium ammonium nitrate (CAN) amounts, polymerization time, ultrasound application conditions were determined and then the polymers that are called "PCz-U#" were characterized by using scanning electron microscope (SEM), fourier transform infrared spectroscopy (FT-IR), thermal gravimetric analysis (TGA), transmission electron microscobe (TEM), X-ray diffraction (XRD) and four-point prop conductivity measurements. The effect of the applied pressing time during preparation of pellet on the conductivity of PCz-U was also investigated. Pressureassisted polymerization (P) was carried out at these optimum conditions and the resulting polymer was called "PCz-P#".In order to understand the advantage of the ultrasound and pressure assisted methods, conventional polymerization in a solution was also performed at the optimum concentrations of Cz and CAN and the properties of PCz's obtained from three different methods were compared. The conductivities of PCz's obtained in a very short time such as one minute with the ultrasound and pressure assisted methods are at the same level as the conductivity of the polymer (∼ 10 À 4 S/cm) obtained by the solution method in 20 minutes using 16 and 35.6 times higher amounds of Cz and CAN, respectively. With this study, two new methods for PCz synthesis have been proposed, which are suitable for VOC limitation as no solvent is used in and environmentally friendly because less chemicals are used.

show abstract

Structural and Photometrical Investigation of Bi2O3 Incorporated Polycarbazole Nanohybrid for Emissive Layer Application

Kumar,

Nayak,

Mandal

et al. 2023

Recent Advances in Nanomaterials

View full text Add to dashboard Cite

Synthesis and photoluminescence properties of polycarbazole/tin oxide (PCz/SnO2) polymer nanocomposites

Cited by 17 publications

References 42 publications

Structural, Optical and Electrical Conductivity Studies in Polycarbazole and Its Metal Oxide Nano Composites

Structural, Optical and Electrical Conductivity Studies in Polycarbazole and Its Metal Oxide Nano Composites

Ultrasound and Pressure Assisted Solid‐State Polymerization of Carbazole

Structural and Photometrical Investigation of Bi2O3 Incorporated Polycarbazole Nanohybrid for Emissive Layer Application

Contact Info

Product

Resources

About