Novel Ambipolar Orthogonal Donor–Acceptor Host for Blue Organic Light Emitting Diodes

Ambipolar triplet hosts comprising 1,2,4-triazole and carbazole in ortho-positions have been developed. The blue PHOLED has a high current efficiency of 47.1 cd A–1, power efficiency of 41.2 lm W–1, and low efficiency roll-off. The high efficiency was attributed to the successful control of π-conjug...

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Published inOrganic letters Vol. 15; no. 18; pp. 4694 - 4697
Main Authors Leung, Man-kit, Hsieh, Yu-Hsuan, Kuo, Ting-Yi, Chou, Pi-Tai, Lee, Jiun-Haw, Chiu, Tien-Lung, Chen, Hsin-Jen
Format Journal Article
LanguageEnglish
Published WASHINGTON American Chemical Society 20.09.2013
Amer Chemical Soc
Subjects
chemical reactions
chemical structure
Chemistry
Chemistry, Organic
light emitting diodes
organic compounds
Physical Sciences
Science & Technology
TRIPLET ENERGY
RED
ELECTROPHOSPHORESCENCE
CARBAZOLE
BIPOLAR HOST
GUEST
HIGH QUANTUM EFFICIENCY
GREEN
Online AccessGet full text
ISSN1523-7060
1523-7052
1523-7052
DOI10.1021/ol402001v

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Abstract Ambipolar triplet hosts comprising 1,2,4-triazole and carbazole in ortho-positions have been developed. The blue PHOLED has a high current efficiency of 47.1 cd A–1, power efficiency of 41.2 lm W–1, and low efficiency roll-off. The high efficiency was attributed to the successful control of π-conjugation through orthogonal arrangement of the substituents so that a wide T1–S0 gap could be maintained.
AbstractList Ambipolar triplet hosts comprising 1,2,4-triazole and carbazole in ortho-positions have been developed. The blue PHOLED has a high current efficiency of 47.1 cd A–¹, power efficiency of 41.2 lm W–¹, and low efficiency roll-off. The high efficiency was attributed to the successful control of π-conjugation through orthogonal arrangement of the substituents so that a wide T₁–S₀ gap could be maintained.
Ambipolar triplet hosts comprising 1,2,4-triazole and carbazole in ortho-positions have been developed. The blue PHOLED has a high current efficiency of 47.1 cd A(-1), power efficiency of 41.2 lm W-1, and low efficiency roll-off. The high efficiency was attributed to the successful control of pi-conjugation through orthogonal arrangement of the substituents so that a wide T-1-S-0 gap could be maintained.
Ambipolar triplet hosts comprising 1,2,4-triazole and carbazole in ortho-positions have been developed. The blue PHOLED has a high current efficiency of 47.1 cd A(-1), power efficiency of 41.2 lm W(-1), and low efficiency roll-off. The high efficiency was attributed to the successful control of π-conjugation through orthogonal arrangement of the substituents so that a wide T1-S0 gap could be maintained.Ambipolar triplet hosts comprising 1,2,4-triazole and carbazole in ortho-positions have been developed. The blue PHOLED has a high current efficiency of 47.1 cd A(-1), power efficiency of 41.2 lm W(-1), and low efficiency roll-off. The high efficiency was attributed to the successful control of π-conjugation through orthogonal arrangement of the substituents so that a wide T1-S0 gap could be maintained.
Ambipolar triplet hosts comprising 1,2,4-triazole and carbazole in ortho-positions have been developed. The blue PHOLED has a high current efficiency of 47.1 cd A(-1), power efficiency of 41.2 lm W(-1), and low efficiency roll-off. The high efficiency was attributed to the successful control of π-conjugation through orthogonal arrangement of the substituents so that a wide T1-S0 gap could be maintained.
Author Kuo, Ting-Yi
Hsieh, Yu-Hsuan
Leung, Man-kit
Chou, Pi-Tai
Chiu, Tien-Lung
Chen, Hsin-Jen
Lee, Jiun-Haw
AuthorAffiliation Department of Chemistry
Institute of Polymer Science and Engineering
Department of Electrical Engineering and Graduate Institute of Photonics and Optoelectronics
National Taiwan University
Yuan Ze University
AuthorAffiliation_xml – name: Yuan Ze University
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  givenname: Yu-Hsuan
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Issue 18
Keywords TRIPLET ENERGY
RED
ELECTROPHOSPHORESCENCE
CARBAZOLE
BIPOLAR HOST
GUEST
HIGH QUANTUM EFFICIENCY
GREEN
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Snippet Ambipolar triplet hosts comprising 1,2,4-triazole and carbazole in ortho-positions have been developed. The blue PHOLED has a high current efficiency of 47.1...
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SubjectTerms chemical reactions
chemical structure
Chemistry
Chemistry, Organic
light emitting diodes
organic compounds
Physical Sciences
Science & Technology
Title Novel Ambipolar Orthogonal Donor–Acceptor Host for Blue Organic Light Emitting Diodes
URI http://dx.doi.org/10.1021/ol402001v
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https://www.ncbi.nlm.nih.gov/pubmed/24015782
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