Thermal degradation of photoluminescence Poly(9,9-dioctylfluorene) solvent-tuned aggregate films
The progression of the green emission spectrum during the decomposition of polyfluorenes (PFs) has impeded the development and commercialization of the materials. Herein, we constructed a solvent-tuned aggregated PFO film with the aim of retarding the material’s thermal degradation behavior which ca...
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Online Access: | http://eprints.utm.my/103790/1/SitiSalwaAlias2022_ThermalDegradationofPhotoluminescencePoly99Dioctylfluorene.pdf http://eprints.utm.my/103790/ http://dx.doi.org/10.3390/polym14081615 |
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my.utm.1037902023-12-01T01:42:31Z http://eprints.utm.my/103790/ Thermal degradation of photoluminescence Poly(9,9-dioctylfluorene) solvent-tuned aggregate films Chew, Kang Wei Abdul Rahim, Nor Azura Teh, Pei Leng Abdul Hisam, Nurfatin Syafiqah Alias, Siti Salwa Q Science (General) The progression of the green emission spectrum during the decomposition of polyfluorenes (PFs) has impeded the development and commercialization of the materials. Herein, we constructed a solvent-tuned aggregated PFO film with the aim of retarding the material’s thermal degradation behavior which causes a significant decline in optical properties as a result of phase transformation. The tuning of the aggregate amount and distribution was executed by applying a poor alcohol-based solvent in chloroform. It emerges that at a lower boiling point methanol evaporates quickly, limiting the aggregate propagation in the film which gives rise to a more transparent film. Furthermore, because of the modulated β-phase conformation, the absorption spectra of PFO films were red-shifted and broadened. The increase in methanol percentage also led to a rise in β-phase percentage. As for the thermal degradation reactions, both pristine and aggregated PFO films exhibited apparent changes in the UV-Vis spectra and PL spectra. In addition, a 97:3 (chloroform:methanol) aggregated PFO film showed a more defined emission spectrum, which demonstrates that the existence of β-phase is able to suppress the unwanted green emission. MDPI 2022-04-02 Article PeerReviewed application/pdf en http://eprints.utm.my/103790/1/SitiSalwaAlias2022_ThermalDegradationofPhotoluminescencePoly99Dioctylfluorene.pdf Chew, Kang Wei and Abdul Rahim, Nor Azura and Teh, Pei Leng and Abdul Hisam, Nurfatin Syafiqah and Alias, Siti Salwa (2022) Thermal degradation of photoluminescence Poly(9,9-dioctylfluorene) solvent-tuned aggregate films. Polymers, 14 (8). pp. 1-16. ISSN 2073-4360 http://dx.doi.org/10.3390/polym14081615 DOI:10.3390/polym14081615 |
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Q Science (General) Chew, Kang Wei Abdul Rahim, Nor Azura Teh, Pei Leng Abdul Hisam, Nurfatin Syafiqah Alias, Siti Salwa Thermal degradation of photoluminescence Poly(9,9-dioctylfluorene) solvent-tuned aggregate films |
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The progression of the green emission spectrum during the decomposition of polyfluorenes (PFs) has impeded the development and commercialization of the materials. Herein, we constructed a solvent-tuned aggregated PFO film with the aim of retarding the material’s thermal degradation behavior which causes a significant decline in optical properties as a result of phase transformation. The tuning of the aggregate amount and distribution was executed by applying a poor alcohol-based solvent in chloroform. It emerges that at a lower boiling point methanol evaporates quickly, limiting the aggregate propagation in the film which gives rise to a more transparent film. Furthermore, because of the modulated β-phase conformation, the absorption spectra of PFO films were red-shifted and broadened. The increase in methanol percentage also led to a rise in β-phase percentage. As for the thermal degradation reactions, both pristine and aggregated PFO films exhibited apparent changes in the UV-Vis spectra and PL spectra. In addition, a 97:3 (chloroform:methanol) aggregated PFO film showed a more defined emission spectrum, which demonstrates that the existence of β-phase is able to suppress the unwanted green emission. |
format |
Article |
author |
Chew, Kang Wei Abdul Rahim, Nor Azura Teh, Pei Leng Abdul Hisam, Nurfatin Syafiqah Alias, Siti Salwa |
author_facet |
Chew, Kang Wei Abdul Rahim, Nor Azura Teh, Pei Leng Abdul Hisam, Nurfatin Syafiqah Alias, Siti Salwa |
author_sort |
Chew, Kang Wei |
title |
Thermal degradation of photoluminescence Poly(9,9-dioctylfluorene) solvent-tuned aggregate films |
title_short |
Thermal degradation of photoluminescence Poly(9,9-dioctylfluorene) solvent-tuned aggregate films |
title_full |
Thermal degradation of photoluminescence Poly(9,9-dioctylfluorene) solvent-tuned aggregate films |
title_fullStr |
Thermal degradation of photoluminescence Poly(9,9-dioctylfluorene) solvent-tuned aggregate films |
title_full_unstemmed |
Thermal degradation of photoluminescence Poly(9,9-dioctylfluorene) solvent-tuned aggregate films |
title_sort |
thermal degradation of photoluminescence poly(9,9-dioctylfluorene) solvent-tuned aggregate films |
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MDPI |
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2022 |
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http://eprints.utm.my/103790/1/SitiSalwaAlias2022_ThermalDegradationofPhotoluminescencePoly99Dioctylfluorene.pdf http://eprints.utm.my/103790/ http://dx.doi.org/10.3390/polym14081615 |
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