Time Evolution of the Excimer State of a Conjugated Polymer Laser

An excited dimer is an important complex formed in nano- or pico-second time scales in many photophysics and photochemistry applications. The spectral and temporal profile of the excimer state of a laser from a new conjugated polymer, namely, poly (9,9-dioctylfluorenyl-2,7-diyl) (PFO), under several...

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Autores principales: Mujamammi, Wafa Musa, Prasad, Saradh, Saleh AlSalhi, Mohamad, Masilamani, Vadivel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6418908/
https://www.ncbi.nlm.nih.gov/pubmed/30965948
http://dx.doi.org/10.3390/polym9120648
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author Mujamammi, Wafa Musa
Prasad, Saradh
Saleh AlSalhi, Mohamad
Masilamani, Vadivel
author_facet Mujamammi, Wafa Musa
Prasad, Saradh
Saleh AlSalhi, Mohamad
Masilamani, Vadivel
author_sort Mujamammi, Wafa Musa
collection PubMed
description An excited dimer is an important complex formed in nano- or pico-second time scales in many photophysics and photochemistry applications. The spectral and temporal profile of the excimer state of a laser from a new conjugated polymer, namely, poly (9,9-dioctylfluorenyl-2,7-diyl) (PFO), under several concentrations in benzene were investigated. These solutions were optically pumped by intense pulsed third-harmonic Nd:YAG laser (355-nm) to obtain the amplified spontaneous emission (ASE) spectra of a monomer and an excimer with bandwidths of 6 and 7 nm, respectively. The monomer and excimer ASEs were dependent on the PFO concentration, pump power, and temperature. Employing a sophisticated picosecond spectrometer, the time evolution of the excimer state of this polymer, which is over 400 ps, can be monitored.
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spelling pubmed-64189082019-04-02 Time Evolution of the Excimer State of a Conjugated Polymer Laser Mujamammi, Wafa Musa Prasad, Saradh Saleh AlSalhi, Mohamad Masilamani, Vadivel Polymers (Basel) Article An excited dimer is an important complex formed in nano- or pico-second time scales in many photophysics and photochemistry applications. The spectral and temporal profile of the excimer state of a laser from a new conjugated polymer, namely, poly (9,9-dioctylfluorenyl-2,7-diyl) (PFO), under several concentrations in benzene were investigated. These solutions were optically pumped by intense pulsed third-harmonic Nd:YAG laser (355-nm) to obtain the amplified spontaneous emission (ASE) spectra of a monomer and an excimer with bandwidths of 6 and 7 nm, respectively. The monomer and excimer ASEs were dependent on the PFO concentration, pump power, and temperature. Employing a sophisticated picosecond spectrometer, the time evolution of the excimer state of this polymer, which is over 400 ps, can be monitored. MDPI 2017-11-27 /pmc/articles/PMC6418908/ /pubmed/30965948 http://dx.doi.org/10.3390/polym9120648 Text en © 2017 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
Mujamammi, Wafa Musa
Prasad, Saradh
Saleh AlSalhi, Mohamad
Masilamani, Vadivel
Time Evolution of the Excimer State of a Conjugated Polymer Laser
title Time Evolution of the Excimer State of a Conjugated Polymer Laser
title_full Time Evolution of the Excimer State of a Conjugated Polymer Laser
title_fullStr Time Evolution of the Excimer State of a Conjugated Polymer Laser
title_full_unstemmed Time Evolution of the Excimer State of a Conjugated Polymer Laser
title_short Time Evolution of the Excimer State of a Conjugated Polymer Laser
title_sort time evolution of the excimer state of a conjugated polymer laser
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6418908/
https://www.ncbi.nlm.nih.gov/pubmed/30965948
http://dx.doi.org/10.3390/polym9120648
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