Synthesis and Polarized Electroluminescence of Mesogenic Polyfluorenes Coordinated with Iridium

Puyao Guo; Gi Eun Kim; Chang Jae Yu; Jae Hoon Kim; Kwang Un Jeong; E. Joon Choi

doi:10.7317/pk.2023.47.4.519

Synthesis and Polarized Electroluminescence of Mesogenic Polyfluorenes Coordinated with Iridium

Puyao Guo
, Gi Eun Kim
, Chang Jae Yu
, Jae Hoon Kim^*
, Kwang Un Jeong
, E. Joon Choi

^*Corresponding author for this work

Department of Polymer -Nano Science &Technology

Kumoh National Institute of Technology
Hanyang University

Research output: Contribution to journal › Journal article › peer-review

Abstract

A series of phosphorescent mesogenic copolymers with various feed ratios of iridium-coordinating monomer as a side group have been prepared. Structure and composition of copolymers were confirmed by Fourier-transform infrared (FTIR) and proton nuclear magnetic resonance (¹H NMR) spectroscopy. Molecular weight of copolymers was determined to be in the range of 7 to 73 kDa by GPC measurement. UV-Vis absorption and photo-and electroluminescence properties of copolymers were investigated. As a result, copolymer IrCP-1 containing 1 mol% iridium-coordinating comonomer showed the highest luminance and current density. Copolymer IrCP-3 with 5 mol% iridium-coordinating comonomer exhibited a satisfactory dichroic ratio of 1.47.

Original language	English
Pages (from-to)	519-527
Number of pages	9
Journal	Polymer (Korea)
Volume	47
Issue number	4
DOIs	https://doi.org/10.7317/pk.2023.47.4.519
State	Published - 2023.07

Keywords

electroluminescence
fluorescence
liquid crystalline polymer
phosphorescent
polarized light

Quacquarelli Symonds(QS) Subject Topics

Materials Science
Engineering - Chemical

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10.7317/pk.2023.47.4.519

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@article{284da2b20acc404993cb02c9e260c5da,

title = "Synthesis and Polarized Electroluminescence of Mesogenic Polyfluorenes Coordinated with Iridium",

abstract = "A series of phosphorescent mesogenic copolymers with various feed ratios of iridium-coordinating monomer as a side group have been prepared. Structure and composition of copolymers were confirmed by Fourier-transform infrared (FTIR) and proton nuclear magnetic resonance (1H NMR) spectroscopy. Molecular weight of copolymers was determined to be in the range of 7 to 73 kDa by GPC measurement. UV-Vis absorption and photo-and electroluminescence properties of copolymers were investigated. As a result, copolymer IrCP-1 containing 1 mol\% iridium-coordinating comonomer showed the highest luminance and current density. Copolymer IrCP-3 with 5 mol\% iridium-coordinating comonomer exhibited a satisfactory dichroic ratio of 1.47.",

keywords = "electroluminescence, fluorescence, liquid crystalline polymer, phosphorescent, polarized light",

author = "Puyao Guo and Kim, \{Gi Eun\} and Yu, \{Chang Jae\} and Kim, \{Jae Hoon\} and Jeong, \{Kwang Un\} and Choi, \{E. Joon\}",

note = "Publisher Copyright: {\textcopyright} 2023 The Polymer Society of Korea.",

year = "2023",

month = jul,

doi = "10.7317/pk.2023.47.4.519",

language = "English",

volume = "47",

pages = "519--527",

journal = "Polymer (Korea)",

issn = "0379-153X",

number = "4",

}

TY - JOUR

T1 - Synthesis and Polarized Electroluminescence of Mesogenic Polyfluorenes Coordinated with Iridium

AU - Guo, Puyao

AU - Kim, Gi Eun

AU - Yu, Chang Jae

AU - Kim, Jae Hoon

AU - Jeong, Kwang Un

AU - Choi, E. Joon

PY - 2023/7

Y1 - 2023/7

N2 - A series of phosphorescent mesogenic copolymers with various feed ratios of iridium-coordinating monomer as a side group have been prepared. Structure and composition of copolymers were confirmed by Fourier-transform infrared (FTIR) and proton nuclear magnetic resonance (1H NMR) spectroscopy. Molecular weight of copolymers was determined to be in the range of 7 to 73 kDa by GPC measurement. UV-Vis absorption and photo-and electroluminescence properties of copolymers were investigated. As a result, copolymer IrCP-1 containing 1 mol% iridium-coordinating comonomer showed the highest luminance and current density. Copolymer IrCP-3 with 5 mol% iridium-coordinating comonomer exhibited a satisfactory dichroic ratio of 1.47.

AB - A series of phosphorescent mesogenic copolymers with various feed ratios of iridium-coordinating monomer as a side group have been prepared. Structure and composition of copolymers were confirmed by Fourier-transform infrared (FTIR) and proton nuclear magnetic resonance (1H NMR) spectroscopy. Molecular weight of copolymers was determined to be in the range of 7 to 73 kDa by GPC measurement. UV-Vis absorption and photo-and electroluminescence properties of copolymers were investigated. As a result, copolymer IrCP-1 containing 1 mol% iridium-coordinating comonomer showed the highest luminance and current density. Copolymer IrCP-3 with 5 mol% iridium-coordinating comonomer exhibited a satisfactory dichroic ratio of 1.47.

KW - electroluminescence

KW - fluorescence

KW - liquid crystalline polymer

KW - phosphorescent

KW - polarized light

UR - https://www.scopus.com/pages/publications/85171303952

U2 - 10.7317/pk.2023.47.4.519

DO - 10.7317/pk.2023.47.4.519

M3 - Journal article

AN - SCOPUS:85171303952

SN - 0379-153X

VL - 47

SP - 519

EP - 527

JO - Polymer (Korea)

JF - Polymer (Korea)

IS - 4

ER -

Synthesis and Polarized Electroluminescence of Mesogenic Polyfluorenes Coordinated with Iridium

Abstract

Keywords

Quacquarelli Symonds(QS) Subject Topics

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