Phosphine oxide-functionalized polyfluorene derivatives: Synthesis, photophysics, electrochemical properties, and electroluminescence performance

Zhang Lin Zhou; Lihua Zhao; Sity Lam; Gary Gibson; James Brug; Zeng Shan Guo; Deang Liu; Cheng Wang; Jian Pei; Samuel S. Mao

Phosphine oxide-functionalized polyfluorene derivatives: Synthesis, photophysics, electrochemical properties, and electroluminescence performance

Zhang Lin Zhou, Lihua Zhao, Sity Lam, Gary Gibson, James Brug, Zeng Shan Guo, Deang Liu, Cheng Wang, Jian Pei, Samuel S. Mao

Mechanical & Nuclear Engineering

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

Abstract

A series of phosphine oxide-functionalized polyfluorene derivatives, PFH-PO-40-1 (P1), PFHPO- 20-1 (P2), PFH-PO-10-1 (P3), and PFH-PO-1-1 (P4), were prepared via a palladiummediated Suzuki cross-coupling reaction. The structures and purities of all polymers were fully characterized by ¹H and ¹³C NMR, UV-vis and photoluminescent spectroscopy, gel permeation chromatography, and TGA/DSC. Their photoluminescent emission spectra showed single broad peaks at about 445 nm in thin films, as compared to 419 and 440 nm in dilute solutions. The difference might be caused by some degree of aggregation in the excited states of the polymers' main chains. The electroluminescence (EL) properties of these polymers were characterized in devices with a configuration of ITO/PEDOT: PSS/Polymer/Alq3/LiF/Al. The best device result was obtained using polymer P1, which provided an efficiency of 4.2 Cd/A at 6V.

Original language	British English
Pages (from-to)	1-17
Number of pages	17
Journal	HP Laboratories Technical Report
Issue number	150
State	Published - 2010

Keywords

Conjugated polymers
Electrochemical properties
Electroluminescence
Photophysical properties
Polyfluorenes

Cite this

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title = "Phosphine oxide-functionalized polyfluorene derivatives: Synthesis, photophysics, electrochemical properties, and electroluminescence performance",

abstract = "A series of phosphine oxide-functionalized polyfluorene derivatives, PFH-PO-40-1 (P1), PFHPO- 20-1 (P2), PFH-PO-10-1 (P3), and PFH-PO-1-1 (P4), were prepared via a palladiummediated Suzuki cross-coupling reaction. The structures and purities of all polymers were fully characterized by 1H and 13C NMR, UV-vis and photoluminescent spectroscopy, gel permeation chromatography, and TGA/DSC. Their photoluminescent emission spectra showed single broad peaks at about 445 nm in thin films, as compared to 419 and 440 nm in dilute solutions. The difference might be caused by some degree of aggregation in the excited states of the polymers' main chains. The electroluminescence (EL) properties of these polymers were characterized in devices with a configuration of ITO/PEDOT: PSS/Polymer/Alq3/LiF/Al. The best device result was obtained using polymer P1, which provided an efficiency of 4.2 Cd/A at 6V.",

keywords = "Conjugated polymers, Electrochemical properties, Electroluminescence, Photophysical properties, Polyfluorenes",

author = "Zhou, {Zhang Lin} and Lihua Zhao and Sity Lam and Gary Gibson and James Brug and Guo, {Zeng Shan} and Deang Liu and Cheng Wang and Jian Pei and Mao, {Samuel S.}",

year = "2010",

language = "British English",

pages = "1--17",

journal = "HP Laboratories Technical Report",

publisher = "Hewlett-Packard Company",

number = "150",

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TY - JOUR

T1 - Phosphine oxide-functionalized polyfluorene derivatives

T2 - Synthesis, photophysics, electrochemical properties, and electroluminescence performance

AU - Zhou, Zhang Lin

AU - Zhao, Lihua

AU - Lam, Sity

AU - Gibson, Gary

AU - Brug, James

AU - Guo, Zeng Shan

AU - Liu, Deang

AU - Wang, Cheng

AU - Pei, Jian

AU - Mao, Samuel S.

PY - 2010

Y1 - 2010

N2 - A series of phosphine oxide-functionalized polyfluorene derivatives, PFH-PO-40-1 (P1), PFHPO- 20-1 (P2), PFH-PO-10-1 (P3), and PFH-PO-1-1 (P4), were prepared via a palladiummediated Suzuki cross-coupling reaction. The structures and purities of all polymers were fully characterized by 1H and 13C NMR, UV-vis and photoluminescent spectroscopy, gel permeation chromatography, and TGA/DSC. Their photoluminescent emission spectra showed single broad peaks at about 445 nm in thin films, as compared to 419 and 440 nm in dilute solutions. The difference might be caused by some degree of aggregation in the excited states of the polymers' main chains. The electroluminescence (EL) properties of these polymers were characterized in devices with a configuration of ITO/PEDOT: PSS/Polymer/Alq3/LiF/Al. The best device result was obtained using polymer P1, which provided an efficiency of 4.2 Cd/A at 6V.

AB - A series of phosphine oxide-functionalized polyfluorene derivatives, PFH-PO-40-1 (P1), PFHPO- 20-1 (P2), PFH-PO-10-1 (P3), and PFH-PO-1-1 (P4), were prepared via a palladiummediated Suzuki cross-coupling reaction. The structures and purities of all polymers were fully characterized by 1H and 13C NMR, UV-vis and photoluminescent spectroscopy, gel permeation chromatography, and TGA/DSC. Their photoluminescent emission spectra showed single broad peaks at about 445 nm in thin films, as compared to 419 and 440 nm in dilute solutions. The difference might be caused by some degree of aggregation in the excited states of the polymers' main chains. The electroluminescence (EL) properties of these polymers were characterized in devices with a configuration of ITO/PEDOT: PSS/Polymer/Alq3/LiF/Al. The best device result was obtained using polymer P1, which provided an efficiency of 4.2 Cd/A at 6V.

KW - Conjugated polymers

KW - Electrochemical properties

KW - Electroluminescence

KW - Photophysical properties

KW - Polyfluorenes

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M3 - Article

AN - SCOPUS:78650535775

SP - 1

EP - 17

JO - HP Laboratories Technical Report

JF - HP Laboratories Technical Report

IS - 150

ER -

Phosphine oxide-functionalized polyfluorene derivatives: Synthesis, photophysics, electrochemical properties, and electroluminescence performance

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