Isomer engineering of universal electron transport materials for suppressed exciton quenching in organic light-emitting diodes

Ji Ae Kang; Seung Chan Kim; Jun Yeob Lee

doi:10.1016/j.dyepig.2022.110319

Isomer engineering of universal electron transport materials for suppressed exciton quenching in organic light-emitting diodes

Ji Ae Kang, Seung Chan Kim, Jun Yeob Lee

Department of Chemical Engineering

Sungkyunkwan University

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

A regioisomer of 2,7-bis(4,6-diphenyl-1,3,5-triazin-2-yl)-9,9′-spirobi[fluorene] (m-SBFTrz), 3,6-bis(4,6-diphenyl-1,3,5-triazin-2-yl)-9,9′-spirobi[fluorene] (p-SBFTrz) was developed as a high triplet energy electron transport material by engineering the substitution position of diphenyltriazine to the spirobifluorene core. The p-SBFTrz showed great potential as an electron transport and exciton blocking materials in various devices such as thermally activated delayed fluorescence organic light-emitting diodes (OLEDs) and phosphorescence OLEDs due to increased triplet energy. A large improvement of the external quantum efficiency was achieved using the p-SBFTrz instead of m-SBFTrz by completely suppressing exciton quenching.

Original language	English
Article number	110319
Journal	Dyes and Pigments
Volume	203
DOIs	https://doi.org/10.1016/j.dyepig.2022.110319
State	Published - Jul 2022

Keywords

Electron transport material
High triplet energy
Hole blocking material
Spirobifluorene core

Access to Document

10.1016/j.dyepig.2022.110319

Cite this

@article{cc04fc0a48e4435886414082b7647acf,

title = "Isomer engineering of universal electron transport materials for suppressed exciton quenching in organic light-emitting diodes",

abstract = "A regioisomer of 2,7-bis(4,6-diphenyl-1,3,5-triazin-2-yl)-9,9′-spirobi[fluorene] (m-SBFTrz), 3,6-bis(4,6-diphenyl-1,3,5-triazin-2-yl)-9,9′-spirobi[fluorene] (p-SBFTrz) was developed as a high triplet energy electron transport material by engineering the substitution position of diphenyltriazine to the spirobifluorene core. The p-SBFTrz showed great potential as an electron transport and exciton blocking materials in various devices such as thermally activated delayed fluorescence organic light-emitting diodes (OLEDs) and phosphorescence OLEDs due to increased triplet energy. A large improvement of the external quantum efficiency was achieved using the p-SBFTrz instead of m-SBFTrz by completely suppressing exciton quenching.",

keywords = "Electron transport material, High triplet energy, Hole blocking material, Spirobifluorene core",

author = "Kang, \{Ji Ae\} and \{Chan Kim\}, Seung and Lee, \{Jun Yeob\}",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2022",

month = jul,

doi = "10.1016/j.dyepig.2022.110319",

language = "English",

volume = "203",

journal = "Dyes and Pigments",

issn = "0143-7208",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Isomer engineering of universal electron transport materials for suppressed exciton quenching in organic light-emitting diodes

AU - Kang, Ji Ae

AU - Chan Kim, Seung

AU - Lee, Jun Yeob

PY - 2022/7

Y1 - 2022/7

N2 - A regioisomer of 2,7-bis(4,6-diphenyl-1,3,5-triazin-2-yl)-9,9′-spirobi[fluorene] (m-SBFTrz), 3,6-bis(4,6-diphenyl-1,3,5-triazin-2-yl)-9,9′-spirobi[fluorene] (p-SBFTrz) was developed as a high triplet energy electron transport material by engineering the substitution position of diphenyltriazine to the spirobifluorene core. The p-SBFTrz showed great potential as an electron transport and exciton blocking materials in various devices such as thermally activated delayed fluorescence organic light-emitting diodes (OLEDs) and phosphorescence OLEDs due to increased triplet energy. A large improvement of the external quantum efficiency was achieved using the p-SBFTrz instead of m-SBFTrz by completely suppressing exciton quenching.

AB - A regioisomer of 2,7-bis(4,6-diphenyl-1,3,5-triazin-2-yl)-9,9′-spirobi[fluorene] (m-SBFTrz), 3,6-bis(4,6-diphenyl-1,3,5-triazin-2-yl)-9,9′-spirobi[fluorene] (p-SBFTrz) was developed as a high triplet energy electron transport material by engineering the substitution position of diphenyltriazine to the spirobifluorene core. The p-SBFTrz showed great potential as an electron transport and exciton blocking materials in various devices such as thermally activated delayed fluorescence organic light-emitting diodes (OLEDs) and phosphorescence OLEDs due to increased triplet energy. A large improvement of the external quantum efficiency was achieved using the p-SBFTrz instead of m-SBFTrz by completely suppressing exciton quenching.

KW - Electron transport material

KW - High triplet energy

KW - Hole blocking material

KW - Spirobifluorene core

UR - https://www.scopus.com/pages/publications/85128254597

U2 - 10.1016/j.dyepig.2022.110319

DO - 10.1016/j.dyepig.2022.110319

M3 - Article

AN - SCOPUS:85128254597

SN - 0143-7208

VL - 203

JO - Dyes and Pigments

JF - Dyes and Pigments

M1 - 110319

ER -

Isomer engineering of universal electron transport materials for suppressed exciton quenching in organic light-emitting diodes

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this