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Optically Pumped Intensive Light Amplification from a Blue Oligomer

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-tran...

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Autores principales: Aljaafreh, Mamduh J., Prasad, Saradh, AlSalhi, Mohamad S., Alahmed, Zeyad A., Al-Mogren, Muneerah M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6835369/
https://www.ncbi.nlm.nih.gov/pubmed/31547019
http://dx.doi.org/10.3390/polym11101534
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author Aljaafreh, Mamduh J.
Prasad, Saradh
AlSalhi, Mohamad S.
Alahmed, Zeyad A.
Al-Mogren, Muneerah M.
author_facet Aljaafreh, Mamduh J.
Prasad, Saradh
AlSalhi, Mohamad S.
Alahmed, Zeyad A.
Al-Mogren, Muneerah M.
author_sort Aljaafreh, Mamduh J.
collection PubMed
description 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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spelling pubmed-68353692019-11-25 Optically Pumped Intensive Light Amplification from a Blue Oligomer Aljaafreh, Mamduh J. Prasad, Saradh AlSalhi, Mohamad S. Alahmed, Zeyad A. Al-Mogren, Muneerah M. Polymers (Basel) Article 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. MDPI 2019-09-20 /pmc/articles/PMC6835369/ /pubmed/31547019 http://dx.doi.org/10.3390/polym11101534 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Aljaafreh, Mamduh J.
Prasad, Saradh
AlSalhi, Mohamad S.
Alahmed, Zeyad A.
Al-Mogren, Muneerah M.
Optically Pumped Intensive Light Amplification from a Blue Oligomer
title Optically Pumped Intensive Light Amplification from a Blue Oligomer
title_full Optically Pumped Intensive Light Amplification from a Blue Oligomer
title_fullStr Optically Pumped Intensive Light Amplification from a Blue Oligomer
title_full_unstemmed Optically Pumped Intensive Light Amplification from a Blue Oligomer
title_short Optically Pumped Intensive Light Amplification from a Blue Oligomer
title_sort optically pumped intensive light amplification from a blue oligomer
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6835369/
https://www.ncbi.nlm.nih.gov/pubmed/31547019
http://dx.doi.org/10.3390/polym11101534
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