Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/21333
Title: | Energy Transfer from Fluorene Based Conjugated Polyelectrolytes to Onchain and Self-Assembled Porphyrin Units | Authors: | Marques, Ana T. Pinto, Sara M. A. Monteiro, Carlos J. P. Melo, J. Sérgio Seixas de Burrows, Hugh D. Scherf, Ullrich Calvete, Mário J. F. Pereira, Mariette M. |
Keywords: | Conjugated polymers; Fluorescence; Hydrophilic polymers; Self-assembly; Water-soluble polymers | Issue Date: | Apr-2012 | Publisher: | Wiley-Blackwell | Citation: | MARQUES, Ana T. [et al.] - Energy Transfer from Fluorene Based Conjugated Polyelectrolytes to Onchain and Self-Assembled Porphyrin Units. "Journal of Polymer Science Part A: Polymer Chemistry". ISSN 0887-624X. 50:7 (2012) 1408-1417 | Serial title, monograph or event: | Journal of Polymer Science Part A: Polymer Chemistry | Volume: | 50 | Issue: | 7 | Abstract: | A new water soluble fluorene-based polyelectrolyte containing on-chain porphyrin units has been synthesized via Suzuki coupling, for use in optoelectronic devices. The material consist of a random copolymer of poly{1,4-phenylene-[9,9-bis(4-phenoxy butylsulfonate)]fluorene-2,7-diyl} (PBS-PFP) and a 5,15-diphenylporphyrin (DPP). The energy transfer process between the PBS-PFP units and the porphyrin has been investigated through steady state and time-resolved measurements. The copolymer PBS-PFP-DPP displays two different emissions one located in the blue region of the spectra, corresponding to the fluorene part and another in the red due to fluorescent DPP units either formed directly or by exciton transfer. However, relatively inefficient energy transfer from the PFP to the on-chain porphyrin units was observed. We compare this with a system involving an anionic blue light-emitting donor PBS-PFP and a anionic red light-emitting energy acceptor meso-tetrakisphenylporphyrinsulfonate (TPPS), self-assembled by electrostatic attraction induced by Ca2+. Based on previous studies related to chain aggregation of the anionic copolymer PBS-PFP, two different solvent media were chosen to further explore the possibilities of the self-assembled system: dioxane–water and aqueous nonionic surfactant n-dodecylpentaoxyethylene glycol ether (C12E5). In contrast, with the on-chain PBS-PFP-DPP system the strong overlap of the 0-0 emission peak of the PBS-PFP and the Soret absorption band of the TPPS results in an efficient Förster transfer. This is strongly dependent on the solvent medium used. | URI: | https://hdl.handle.net/10316/21333 | ISSN: | 0887-624X | DOI: | 10.1002/pola.25908 | Rights: | openAccess |
Appears in Collections: | FCTUC Química - Artigos em Revistas Internacionais |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Energy Transfer from Fluorene.pdf | 1.64 MB | Adobe PDF | View/Open |
SCOPUSTM
Citations
30
checked on Nov 11, 2022
WEB OF SCIENCETM
Citations
5
29
checked on Aug 2, 2022
Page view(s)
341
checked on Oct 16, 2024
Download(s) 20
1,117
checked on Oct 16, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.