Effect of Fluorine Substituted Benzothiadiazole on Electro-Optical Properties of Donor-Acceptor Type Monomers and Their Polymers

dc.authorid Çakal, Deniz/0000-0003-1656-2430
dc.authorid Onal, ahmet muhtar/0000-0003-0644-7180
dc.authorscopusid 57200397516
dc.authorscopusid 57218142174
dc.authorscopusid 7004825485
dc.authorscopusid 55925768200
dc.authorwosid Çakal, Deniz/ABA-1341-2020
dc.authorwosid Onal, ahmet muhtar/AAS-5007-2020
dc.authorwosid Cihaner, Atilla/AAC-9468-2021
dc.contributor.author Cakal, Deniz
dc.contributor.author Ercan, Yunus Emre
dc.contributor.author Onal, Ahmet M.
dc.contributor.author Cihaner, Atilla
dc.contributor.other Chemical Engineering
dc.date.accessioned 2024-07-05T15:39:04Z
dc.date.available 2024-07-05T15:39:04Z
dc.date.issued 2020
dc.department Atılım University en_US
dc.department-temp [Cakal, Deniz; Onal, Ahmet M.] Middle East Tech Univ, Dept Chem, TR-06800 Ankara, Turkey; [Ercan, Yunus Emre; Cihaner, Atilla] Atilim Univ, Dept Chem Engn, Atilim Optoelect Mat & Solar Energy Lab ATOMSEL, TR-06830 Ankara, Turkey en_US
dc.description Çakal, Deniz/0000-0003-1656-2430; Onal, ahmet muhtar/0000-0003-0644-7180; en_US
dc.description.abstract A series of trimeric monomers bearing thiophene donor units and fluorinated analogues of benzothiadiazole acceptor units was synthesized via donor-acceptor-donor approach and polymerized electrochemically in order to investigate the effect of fluorine atom on electro-optical properties of both monomers and their corresponding polymers. All monomers exhibited solvatochromic and fluorescent properties. The introduction of fluorine atom into the conjugated backbone increased the oxidation potentials. Upon moving from nonfluorinated to fully fluorinated analogues, the oxidation potential shifts anodically from 1.30 V to 1.7 V. As in the case of monomers, the fluorine atom substitution also resulted in a decrease in the HOMO energy level of the corresponding polymers, leading to an increase in the electrochemical band gap energy (1.71-1.97 eV). This result can be attributed to deviations from planarity and also to decrease in the effective conjugation length. The polymeric film also exhibited electrochromic properties under various external potentials. Switching time and coloration efficiency values decreased with increasing number of fluorine atom substitution. en_US
dc.description.sponsorship Atilim University en_US
dc.description.sponsorship The authors gratefully express thanks for the financial support by Atilim University. en_US
dc.identifier.citationcount 22
dc.identifier.doi 10.1016/j.dyepig.2020.108622
dc.identifier.issn 0143-7208
dc.identifier.issn 1873-3743
dc.identifier.scopus 2-s2.0-85088038555
dc.identifier.uri https://doi.org/10.1016/j.dyepig.2020.108622
dc.identifier.uri https://hdl.handle.net/20.500.14411/3166
dc.identifier.volume 182 en_US
dc.identifier.wos WOS:000564527600002
dc.identifier.wosquality Q1
dc.institutionauthor Cihaner, Atilla
dc.language.iso en en_US
dc.publisher Elsevier Sci Ltd en_US
dc.relation.publicationcategory Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı en_US
dc.rights info:eu-repo/semantics/closedAccess en_US
dc.scopus.citedbyCount 29
dc.subject Donor-acceptor-donor approach en_US
dc.subject Fluorination en_US
dc.subject Benzothiadiazole en_US
dc.subject Thiophene en_US
dc.title Effect of Fluorine Substituted Benzothiadiazole on Electro-Optical Properties of Donor-Acceptor Type Monomers and Their Polymers en_US
dc.type Article en_US
dc.wos.citedbyCount 27
dspace.entity.type Publication
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relation.isOrgUnitOfPublication.latestForDiscovery bebae599-17cc-4f0b-997b-a4164a19b94b

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