Novel electroluminescent PPV copolymers containing Si-phenyl and difluorovinylene units

Youngeup Jin; Suhee Song; Sung Heum Park; Jinwoo Kim; Han Young Woo; Kwanghee Lee; Hongsuk Suh

doi:10.1295/polymj.PJ2008085

Novel electroluminescent PPV copolymers containing Si-phenyl and difluorovinylene units

Youngeup Jin, Suhee Song, Sung Heum Park, Jinwoo Kim, Han Young Woo, Kwanghee Lee, Hongsuk Suh

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

1 Citation (Scopus)

Abstract

New electroluminescent copolymers with fluoro groups in vinylene units, poly(2-(3′-dimethyloctylsilylphenyl)-p-phenyl-enevinylene-co-p- phenylenedifluorovinylene)s (SiPhPPVPDFVs), have been synthesized by the Gilch polymerization. The fluoro groups were introduced onto the vinylene units to increase electron affinity of the copolymers. The HOMO energy levels of the copolymers were between 5.30-5.35 eV. The EL spectra of devices with the configuration of ITO/PEDOT:PSS/polymer/Al showed maximum peaks between 526-560 nm. By adjusting the feed ratios of PPDFV in SiPhPPVPDFVs, the CIE coordinates moved from yellow to green. The luminescence efficiencies of the copolymers at room temperature ranged from 0.35-2.03 cd/A. SiPhPPVPDFV3 showed the maximum brightness of 4451cd/m² and the highest luminescence efficiency of 2.03 cd/A. Introduction of up to 30% of PPDFV in the copolymers with m-SiPhPPV enhanced the device performance to result in high current density, brightness and efficiency due to increased electron injection ability caused by the presence of fluoro groups in the vinylene units.

Original language	English
Pages (from-to)	965-970
Number of pages	6
Journal	Polymer Journal
Volume	40
Issue number	10
DOIs	https://doi.org/10.1295/polymj.PJ2008085
Publication status	Published - 2008
Externally published	Yes

Bibliographical note

Funding Information:
Acknowledgment. This work was supported by a grant-in-aid for the National Core Research Center Program from MOST and KOSEF (No. R15-2006-022-01001-0), and the Ministry of Information & Communications, Korea, under the Information Technology Research Center (ITRC) Support Program.

Keywords

Conjugated polymers
LEDs
Luminescence
PPVs

ASJC Scopus subject areas

Polymers and Plastics
Materials Chemistry

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10.1295/polymj.PJ2008085

Cite this

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title = "Novel electroluminescent PPV copolymers containing Si-phenyl and difluorovinylene units",

abstract = "New electroluminescent copolymers with fluoro groups in vinylene units, poly(2-(3′-dimethyloctylsilylphenyl)-p-phenyl-enevinylene-co-p- phenylenedifluorovinylene)s (SiPhPPVPDFVs), have been synthesized by the Gilch polymerization. The fluoro groups were introduced onto the vinylene units to increase electron affinity of the copolymers. The HOMO energy levels of the copolymers were between 5.30-5.35 eV. The EL spectra of devices with the configuration of ITO/PEDOT:PSS/polymer/Al showed maximum peaks between 526-560 nm. By adjusting the feed ratios of PPDFV in SiPhPPVPDFVs, the CIE coordinates moved from yellow to green. The luminescence efficiencies of the copolymers at room temperature ranged from 0.35-2.03 cd/A. SiPhPPVPDFV3 showed the maximum brightness of 4451cd/m2 and the highest luminescence efficiency of 2.03 cd/A. Introduction of up to 30% of PPDFV in the copolymers with m-SiPhPPV enhanced the device performance to result in high current density, brightness and efficiency due to increased electron injection ability caused by the presence of fluoro groups in the vinylene units.",

keywords = "Conjugated polymers, LEDs, Luminescence, PPVs",

author = "Youngeup Jin and Suhee Song and Park, {Sung Heum} and Jinwoo Kim and Woo, {Han Young} and Kwanghee Lee and Hongsuk Suh",

note = "Funding Information: Acknowledgment. This work was supported by a grant-in-aid for the National Core Research Center Program from MOST and KOSEF (No. R15-2006-022-01001-0), and the Ministry of Information & Communications, Korea, under the Information Technology Research Center (ITRC) Support Program.",

year = "2008",

doi = "10.1295/polymj.PJ2008085",

language = "English",

volume = "40",

pages = "965--970",

journal = "Polymer Journal",

issn = "0032-3896",

publisher = "Nature Publishing Group",

number = "10",

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T1 - Novel electroluminescent PPV copolymers containing Si-phenyl and difluorovinylene units

AU - Jin, Youngeup

AU - Song, Suhee

AU - Park, Sung Heum

AU - Kim, Jinwoo

AU - Woo, Han Young

AU - Lee, Kwanghee

AU - Suh, Hongsuk

N1 - Funding Information: Acknowledgment. This work was supported by a grant-in-aid for the National Core Research Center Program from MOST and KOSEF (No. R15-2006-022-01001-0), and the Ministry of Information & Communications, Korea, under the Information Technology Research Center (ITRC) Support Program.

PY - 2008

Y1 - 2008

N2 - New electroluminescent copolymers with fluoro groups in vinylene units, poly(2-(3′-dimethyloctylsilylphenyl)-p-phenyl-enevinylene-co-p- phenylenedifluorovinylene)s (SiPhPPVPDFVs), have been synthesized by the Gilch polymerization. The fluoro groups were introduced onto the vinylene units to increase electron affinity of the copolymers. The HOMO energy levels of the copolymers were between 5.30-5.35 eV. The EL spectra of devices with the configuration of ITO/PEDOT:PSS/polymer/Al showed maximum peaks between 526-560 nm. By adjusting the feed ratios of PPDFV in SiPhPPVPDFVs, the CIE coordinates moved from yellow to green. The luminescence efficiencies of the copolymers at room temperature ranged from 0.35-2.03 cd/A. SiPhPPVPDFV3 showed the maximum brightness of 4451cd/m2 and the highest luminescence efficiency of 2.03 cd/A. Introduction of up to 30% of PPDFV in the copolymers with m-SiPhPPV enhanced the device performance to result in high current density, brightness and efficiency due to increased electron injection ability caused by the presence of fluoro groups in the vinylene units.

AB - New electroluminescent copolymers with fluoro groups in vinylene units, poly(2-(3′-dimethyloctylsilylphenyl)-p-phenyl-enevinylene-co-p- phenylenedifluorovinylene)s (SiPhPPVPDFVs), have been synthesized by the Gilch polymerization. The fluoro groups were introduced onto the vinylene units to increase electron affinity of the copolymers. The HOMO energy levels of the copolymers were between 5.30-5.35 eV. The EL spectra of devices with the configuration of ITO/PEDOT:PSS/polymer/Al showed maximum peaks between 526-560 nm. By adjusting the feed ratios of PPDFV in SiPhPPVPDFVs, the CIE coordinates moved from yellow to green. The luminescence efficiencies of the copolymers at room temperature ranged from 0.35-2.03 cd/A. SiPhPPVPDFV3 showed the maximum brightness of 4451cd/m2 and the highest luminescence efficiency of 2.03 cd/A. Introduction of up to 30% of PPDFV in the copolymers with m-SiPhPPV enhanced the device performance to result in high current density, brightness and efficiency due to increased electron injection ability caused by the presence of fluoro groups in the vinylene units.

KW - Conjugated polymers

KW - LEDs

KW - Luminescence

KW - PPVs

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Novel electroluminescent PPV copolymers containing Si-phenyl and difluorovinylene units

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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