Exploring the experimental photoluminescence, Raman and infrared responses and density functional theory results for TFB polymer

Renzi, Wesley; Cordeiro, Neusmar J. A.; Santana, Henrique de; Costa, Marcello F.; Silva, M.A.T. da; Laureto, Édson; Duarte, José Leonil

doi:10.1016/j.synthmet.2017.12.008

Cited by 10 publications

(12 citation statements)

References 48 publications

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“…2. In previously reported wavenumber peaks in organic materials irradiated by infrared in FT-IR analysis 22 , 815 peaks were found to be due to C-H bending out-of-plane vibrations of para-disubstituted benzene rings; 1113 peaks were due to the bending mode of C-C stretching between phenylene rings or the C-H bending mode of the side chains. The 1288 peak appears to be the C-C stretching mode between phenylene rings, finally, the 1319 peak is the vibration peak of the C-H bends.…”

Section: Resultsmentioning

confidence: 87%

Optical and Electrical Analysis of Annealing Temperature of High-Molecular Weight Hole Transport Layer for Quantum-dot Light-emitting Diodes

Han

Kang

et al. 2019

Sci Rep

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In this study, we introduce optimization of the annealing conditions for improvement of hardness and hole transporting properties of high-molecular weight poly [9, 9-dioctylfluorene-co-N-(4-(3-methylpropyl)) diphenylamine] (TFB) film used as a Hole Transport Layer (HTL) of Quantum-dot Light-emitting Diodes (QLEDs). As annealing temperatures were increased from 120 °C to 150 °C or more, no dissolving or intermixing phenomena at the interface between HTL and Quantum-Dot Emission Layer (QDs EML) was observed. However, when the annealing temperatures was increased from 150 °C to 210 °C, the intensity of the absorbance peaks as determined by Fourier Transform Infrared (FT-IR) measurement was found to relatively decrease, and hole transporting properties were found to decrease in the measurement of current density - voltage (CD - V) and capacitance - voltage (C - V) characteristics of Hole Only Devices (HODs) due to thermal damage. At the annealing temperature of 150 °C, the QLEDs device was optimized with TFB films having good hardness and best hole transporting properties for solution processed QLEDs.

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Section: Resultsmentioning

confidence: 87%

Optical and Electrical Analysis of Annealing Temperature of High-Molecular Weight Hole Transport Layer for Quantum-dot Light-emitting Diodes

Han

Kang

et al. 2019

Sci Rep

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“…These spectral features of the F8TPA particles resemble those of structurally related TFB polymer. [ 39 ] The F8‐T/BT solution in THF shows two absorption maxima at 320 and 510 nm. The red emission of an F8‐T/BT particle dispersion in n ‐propanol is broad and peaks at 700 nm (λ ex = 450 nm) (see Figure 2a).…”

Section: Resultsmentioning

confidence: 99%

All‐Conjugated Polymer Core–Shell and Core–Shell–Shell Particles with Tunable Emission Profiles and White Light Emission

Haehnle

Schuster

Chen

et al. 2021

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The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/smll.202101411. on Suzuki-Miyaura-type cross-coupling are investigated. The different approaches allow accurate control over the created interface between the conjugated polymer phases and thus also over the energy transfer phenomena between them. This approach opens up completely new synthetic freedom for fine tuning of the optical properties of CPP, enabling, for example, the synthesis of individual white light-emitting particles.

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“…Figure 1 shows the planar molecular structure the optimized geometric structure of the CO BECV-DHF, which is comparable with poly(o-phenylenediamine) oligomers [32] and Poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(4,4′-(N-(4-sec-butylphenyl)diphenylamine)] (TFB) polymer structures [33]. The molecule consists of a central core with 9,9-dihexyl-9 H -fluorene with two 9-ethyl-9 H -carbazoles on either side attached through (2 E )-but-2-ene arms.…”

Section: Methodsmentioning

confidence: 92%

Optically Pumped Intensive Light Amplification from a Blue Oligomer

et al. 2019

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We demonstrated the time-resolved dynamics of laser action from the conductive oligomer (CO) 1,4-Bis(9-ethyl-3-carbazo-vinylene)-9,9-dihexyl-fluorene (BECV-DHF). Absorption and fluorescence spectra were studied for BECV-DHF in different solvents under a wide range of concentrations. The Fourier-transform infrared spectroscopy (FTIR) spectrum was measured using simulation and experiments. The Ultraviolet-Visible (UV-VIS) spectra of the BECV-DHF were simulated in two different solutions. This CO formed a dimer and had two vibration bands in nonpolar solvents, partially dissolved in polar protic solvents, and created an H-type aggregate in polar aprotic solvents. BECV-DHF produced amplified spontaneous emission (ASE) at 464 nm in many solvents. The high efficiency of ASE is due to the waveguiding and self-assembly nature of the oligomer, which is very rare for optically pumped systems. However, BECV-DHF did not produce ASE in polar protic solvents. BECV-DHF produced ASE in both longitudinal and transverse pumping, and the full-width half maximum (FWHM) was 4 nm and 8 nm respectively for different solvents, such as toluene and acetone. The CO had a very low threshold pump energy (~0.5 mJ). The ASE efficiency was approximately 20%. The time-resolved spectroscopy (TRS) studies showed a temporal Gaussian-shaped ASE output from this CO. BECV-DHF shows remarkably high stability compare to the conjugated polymer (CP) PFO-co-pX.

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Exploring the experimental photoluminescence, Raman and infrared responses and density functional theory results for TFB polymer

Cited by 10 publications

References 48 publications

Optical and Electrical Analysis of Annealing Temperature of High-Molecular Weight Hole Transport Layer for Quantum-dot Light-emitting Diodes

Optical and Electrical Analysis of Annealing Temperature of High-Molecular Weight Hole Transport Layer for Quantum-dot Light-emitting Diodes

All‐Conjugated Polymer Core–Shell and Core–Shell–Shell Particles with Tunable Emission Profiles and White Light Emission

Optically Pumped Intensive Light Amplification from a Blue Oligomer

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