The Effect of Imide Substituents on the Excited State Properties of Perylene Diimide Derivatives

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dc.contributor.authorDanos, Andrew
dc.contributor.authorLi, Chunyong
dc.contributor.authorMonkman, Andrew
dc.contributor.authorVarlıklı, Canan
dc.contributor.authorAksoy, Erkan
dc.date.accessioned2023-01-12T20:36:43Z
dc.date.available2023-01-12T20:36:43Z
dc.date.issued2022
dc.departmentN/A/Departmenten_US
dc.description.abstractSolid state optical properties of fluorescent materials are important for many photonic devices such as organic light emitting diodes, frequency down-converters or luminescent solar concentrators. Perylene diimides (PDIs) represent one of the most popular organic semiconductors which find application in such photonic device applications. In this study, photophysical properties of two dibrominated PDI (DiBrPDIs), one of which contains a branched alkyl chain (2-ethylhexyl, 2-EH) and the other with an aromatic substituent (diisopropylphenyl, DIA) at the imide positions are comparatively studied. We report their absorption and photoluminescence, lifetime and photoluminescence quantum yield (PLQY), as well as photoinduced absorption properties (PIA) examined by fs-transient absorption spectroscopy. Having the same ? conjugated system, DiBrPDIDIA and DiBrPDI-2EH exhibited identical absorption and photoluminescence (PL) spectra in chloroform (?abs:527 nm and ?PL:552 nm). However, in film phase, DiBrPDI-DIA (?PL-DIA:596 nm; PLQY:73.4%) presented a shorter PL wavelength with a higher PLQY than that of DiBrPDI-2EH (?PL-2EH:649 nm; PLQY:36.7%). Bond lengths and core bending angles of PDI derivatives were calculated using Chem3D pro software. It was determined that the 2,6-diisopropylphenyl group in DiBrPDI(DIA) extends a distance of about 6.8 Å out from the imide positions, providing more effective steric protection from aggregation than the smaller 2EH group.en_US
dc.identifier.doi10.55525/tjst.952823
dc.identifier.endpage21en_US
dc.identifier.issn1308-9099
dc.identifier.issue1en_US
dc.identifier.startpage11en_US
dc.identifier.trdizinid509937en_US
dc.identifier.urihttps://doi.org/10.55525/tjst.952823
dc.identifier.urihttps://search.trdizin.gov.tr/yayin/detay/509937
dc.identifier.urihttps://hdl.handle.net/11454/81385
dc.identifier.volume17en_US
dc.indekslendigikaynakTR-Dizinen_US
dc.language.isoenen_US
dc.relation.ispartofTurkish Journal of Science & Technologyen_US
dc.relation.publicationcategoryMakale - Ulusal Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectSolid state fluorescenceen_US
dc.subjectperylene diimideen_US
dc.subjectfs-transient absorption spectroscopyen_US
dc.subjectsteric shieldingen_US
dc.titleThe Effect of Imide Substituents on the Excited State Properties of Perylene Diimide Derivativesen_US
dc.typeArticleen_US

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