Journal ArticleDOI
Electrically Generated Intramolecular Proton Transfer: Electroluminescence and Stimulated Emission from Polymers
TLDR
In this paper, a rod coil copolymer containing 2-(2'- hydroxyphenyl)benzothiazole in the backbone was used to induce a reversible intramolecular proton transfer.Abstract:
: Application of a voltage across a thin film of a rod coil copolymer containing 2-(2'- hydroxyphenyl)benzothiazole in the backbone induces a reversible intramolecular proton transfer. The observed electroluminescence occurs from the excited keto form, produced electrically by a chemical reaction termed electrically generated intramolecular proton transfer, EGIPT. Stimulated emission between 540-640 nm was observed by Ps transient absorption spectroscopy. EGIPT and related proton transfer electroluminescence have implications for understanding proton transfer reactions and organic light emitting devices.read more
Citations
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Journal ArticleDOI
Synthesis of Light-Emitting Conjugated Polymers for Applications in Electroluminescent Devices
TL;DR: School of Chemistry, Bio21 Institute, University of Melbourne, 30 Flemington Road, Victoria 3010, Australia; School of Materials Science and Engineering, Nanyang Technological University, Nastyang Avenue, Republic of Singapore 639798; Institute of Materials Research and Engineering (IMRE) and the Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602.
Journal ArticleDOI
Advanced Organic Optoelectronic Materials: Harnessing Excited-State Intramolecular Proton Transfer (ESIPT) Process
Ji Eon Kwon,Soo Young Park +1 more
TL;DR: Recent studies on advanced ESIPT molecules and their optoelectronic applications are surveyed, particularly focusing on chemical sensors, fluorescence imaging, proton transfer lasers, and organic light-emitting diodes (OLEDs).
Journal ArticleDOI
New Conjugated Polymers with Donor−Acceptor Architectures: Synthesis and Photophysics of Carbazole−Quinoline and Phenothiazine−Quinoline Copolymers and Oligomers Exhibiting Large Intramolecular Charge Transfer
TL;DR: In this article, a donor-acceptor conjugated copolymer and a corresponding oligomer were synthesized and their solution and solid-state photophysics were investigated, and their optical band gaps were 2.35−2.64 eV.
Journal ArticleDOI
A white-light-emitting molecule: frustrated energy transfer between constituent emitting centers.
Sanghyuk Park,Ji Eon Kwon,Se Hun Kim,Jangwon Seo,Kyeongwoon Chung,Sunyoung Park,Du-Jeon Jang,Begoña Milián Medina,Johannes Gierschner,Soo Young Park +9 more
TL;DR: This molecule is composed of covalently linked blue- and orange-light-emitting moieties between which energy transfer is entirely frustrated, leading to the production of reproducible, stable white photo- and electroluminescence.
Journal ArticleDOI
Single-Phase White-Light-Emitting and Photoluminescent Color-Tuning Coordination Assemblies
TL;DR: Some state-of-the-art assembly methods and successful design models relevant to the above three categories are elaborated to demonstrate how to achieve efficient and controllable white-light emission in a single-phase material through a tunable PL approach.
References
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Journal ArticleDOI
Light-emitting diodes based on conjugated polymers
J. H. Burroughes,Donal D. C. Bradley,Adam R. Brown,R.N. Marks,K. D. Mackay,Richard H. Friend,P. L. Burns,Andrew B. Holmes +7 more
TL;DR: In this article, the authors demonstrate that poly(p-phenylene vinylene), prepared by way of a solution-processable precursor, can be used as the active element in a large-area light-emitting diode.
Journal ArticleDOI
Excimers and Exciplexes of Conjugated Polymers
TL;DR: It is shown that the luminescence of conjugated polymer thin films originates from excimer emission and that the generally low quantum yield is the result of self-quenching, so that in sufficiently dilute solution, the "single-chain" emission has a quantum yield of unity.
Journal ArticleDOI
Excited-state proton transfer reactions II. Intramolecular reactions
TL;DR: In this paper, the intrinsic processes and mechanisms of proton transfer in relation to the nature of the intramolecular hydrogen bond ring are reviewed. But the authors focus on the intrinsic process and not the mechanisms of transfer.
Journal ArticleDOI
The molecular fossil record of oleanane and its relation to angiosperms.
J. Michael Moldowan,Jeremy E. P. Dahl,B. J. Huizinga,Frederick J. Fago,Leo J. Hickey,Torren M. Peakman,David Winship Taylor +6 more
TL;DR: Oleanane has been reported in Upper Cretaceous and Tertiary source rocks and their related oils and has been suggested as a marker for flowering plants as discussed by the authors, suggesting that a separate lineage leads to the angiosperms well before the Early Cretaged or that other plant groups have the rarely expressed ability to synthesize oleanane precursors.