Files in this item
Multi-responsive thermally activated delayed fluorescence materials : optical ZnCl2 sensors and efficient green to deep-red OLEDs
Item metadata
dc.contributor.author | Si, Changfeng | |
dc.contributor.author | Gupta, Abhishek Kumar | |
dc.contributor.author | Basumatary, Biju | |
dc.contributor.author | McKay, Aidan | |
dc.contributor.author | Cordes, David Bradford | |
dc.contributor.author | Slawin, Alexandra Martha Zoya | |
dc.contributor.author | Samuel, Ifor David William | |
dc.contributor.author | Zysman-Colman, Eli | |
dc.date.accessioned | 2024-03-04T11:30:03Z | |
dc.date.available | 2024-03-04T11:30:03Z | |
dc.date.issued | 2024-03-03 | |
dc.identifier | 299328897 | |
dc.identifier | bde245ad-48b1-400f-b99a-931abd849ddb | |
dc.identifier | 85186483415 | |
dc.identifier.citation | Si , C , Gupta , A K , Basumatary , B , McKay , A , Cordes , D B , Slawin , A M Z , Samuel , I D W & Zysman-Colman , E 2024 , ' Multi-responsive thermally activated delayed fluorescence materials : optical ZnCl2 sensors and efficient green to deep-red OLEDs ' , Advanced Functional Materials , vol. Early View , 2315935 . https://doi.org/10.1002/adfm.202315935 | en |
dc.identifier.issn | 1616-301X | |
dc.identifier.other | ORCID: /0000-0002-9527-6418/work/155069263 | |
dc.identifier.other | ORCID: /0000-0002-5366-9168/work/155069349 | |
dc.identifier.other | ORCID: /0000-0001-7183-6022/work/155070056 | |
dc.identifier.uri | https://hdl.handle.net/10023/29407 | |
dc.description | Funding: China Scholarship Council - 201806890001; Engineering and Physical Sciences Research Council - EP/L017008/1; Horizon 2020 Framework Programme - 101024874; Royal Society - NF171163. | en |
dc.description.abstract | Thermally activated delayed fluorescence (TADF) is an emission mechanism whereby both singlet and triplet excitons can be harvested to produce light. Significant attention is devoted to developing TADF materials for organic light-emitting diodes (OLEDs), while their use in other organic electronics applications such as sensors, has lagged. A family of TADF emitters, TPAPyAP, TPAPyBP, and TPAPyBPN containing a triphenylamine (TPA) donor and differing nitrogen-containing heterocyclic pyrazine-based acceptors is developed and systematically studied. Depending on the acceptor strength, these three compounds emit with photoluminescence maxima (λPL), of 516, 550, and 575 nm in toluene. Notably, all three compounds show a strong and selective spectral response to the presence of ZnCl2, making them the first optical TADF sensors for this analyte. It is demonstrated that these three emitters can be used in vacuum-deposited OLEDs, which show moderate efficiencies. Of note, the device with TPAPyBPN in 2,8-bis(diphenyl-phoshporyl)-dibenzo[b,d]thiophene (PPT) host emits at 657 nm and shows a maximum external quantum efficiency (EQEmax) of 12.5%. This electroluminescence is significantly red-shifted yet shows comparable efficiency compared to a device fabricated in 4,4′-bis(N-carbazolyl)-1,1′-biphenyl (CBP) host (λEL = 596 nm, EQEmax = 13.6%). | |
dc.format.extent | 14 | |
dc.format.extent | 7693469 | |
dc.language.iso | eng | |
dc.relation.ispartof | Advanced Functional Materials | en |
dc.subject | Deep red emitters | en |
dc.subject | Dibenzo[a,c]phenazine | en |
dc.subject | Organic light-emitting diode | en |
dc.subject | TADF | en |
dc.subject | ZnCl2 sensor | en |
dc.subject | QC Physics | en |
dc.subject | DAS | en |
dc.subject.lcc | QC | en |
dc.title | Multi-responsive thermally activated delayed fluorescence materials : optical ZnCl2 sensors and efficient green to deep-red OLEDs | en |
dc.type | Journal article | en |
dc.contributor.sponsor | European Commission | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.sponsor | The Royal Society | en |
dc.contributor.institution | University of St Andrews. School of Chemistry | en |
dc.contributor.institution | University of St Andrews. Institute of Behavioural and Neural Sciences | en |
dc.contributor.institution | University of St Andrews. EaSTCHEM | en |
dc.contributor.institution | University of St Andrews. Centre for Biophotonics | en |
dc.contributor.institution | University of St Andrews. Condensed Matter Physics | en |
dc.contributor.institution | University of St Andrews. Organic Semiconductor Centre | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.contributor.institution | University of St Andrews. Centre for Energy Ethics | en |
dc.identifier.doi | 10.1002/adfm.202315935 | |
dc.description.status | Peer reviewed | en |
dc.identifier.grantnumber | 101024874 | en |
dc.identifier.grantnumber | ep/l017008/1 | en |
dc.identifier.grantnumber | NF171163 | en |
This item appears in the following Collection(s)
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.