Assembly and characterization of well-defined high-molecular-weight poly(p -phenylene) polymer brushes

Jose Alonzo; Jihua Chen; Jamie Messman; Xiang Yu; Kunlun Hong; Suxiang Deng; Onome Swader; Mark Dadmun; John F. Ankner; Phillip Britt; Jimmy W. Mays; Massimo Malagoli; Bobby G. Sumpter; Jean Luc Brédas; S. Michael Kilbey

doi:10.1021/cm201819p

Assembly and characterization of well-defined high-molecular-weight poly(p -phenylene) polymer brushes

Jose Alonzo, Jihua Chen, Jamie Messman, Xiang Yu, Kunlun Hong, Suxiang Deng, Onome Swader, Mark Dadmun, John F. Ankner, Phillip Britt, Jimmy W. Mays, Massimo Malagoli, Bobby G. Sumpter, Jean Luc Brédas, S. Michael Kilbey^*

^*Corresponding author for this work

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

11 Scopus citations

Abstract

The assembly and characterization of well-defined, end-tethered poly(p-phenylene) (PPP) brushes having high molecular weight, low polydispersity and high 1,4-stereoregularity are presented. The PPP brushes are formed using a precursor route that relies on either self-assembly or spin coating of high molecular weight (degrees of polymerizations 54, 146, and 238) end-functionalized poly(1,3-cyclohexadiene) (PCHD) chains from benzene solutions onto silicon or quartz substrates, followed by aromatization of the end-attached PCHD chains on the surface. The approach allows the thickness (grafting density) of the brushes to be easily varied. The dry brushes before and after aromatization are characterized by ellipsometry, atomic force microscopy, grazing angle attenuated total reflectance Fourier transform infrared spectroscopy, and UV-Vis spectroscopy. The properties of the PPP brushes are compared with those of films made using oligo-paraphenylenes and with ab initio density functional theory simulations of optical properties. Our results suggest conversion to fully aromatized, end-tethered PPP polymer brushes having effective conjugation lengths of 5 phenyl units.

Original language	English (US)
Pages (from-to)	4367-4374
Number of pages	8
Journal	Chemistry of Materials
Volume	23
Issue number	19
DOIs	https://doi.org/10.1021/cm201819p
State	Published - Oct 11 2011
Externally published	Yes

Keywords

electronic structure
poly(para-phenylene)
polymer brush
thin film

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Materials Chemistry

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10.1021/cm201819p

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Alonzo, J., Chen, J., Messman, J., Yu, X., Hong, K., Deng, S., Swader, O., Dadmun, M., Ankner, J. F., Britt, P., Mays, J. W., Malagoli, M., Sumpter, B. G., Brédas, J. L., & Kilbey, S. M. (2011). Assembly and characterization of well-defined high-molecular-weight poly(p -phenylene) polymer brushes. Chemistry of Materials, 23(19), 4367-4374. https://doi.org/10.1021/cm201819p

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title = "Assembly and characterization of well-defined high-molecular-weight poly(p -phenylene) polymer brushes",

abstract = "The assembly and characterization of well-defined, end-tethered poly(p-phenylene) (PPP) brushes having high molecular weight, low polydispersity and high 1,4-stereoregularity are presented. The PPP brushes are formed using a precursor route that relies on either self-assembly or spin coating of high molecular weight (degrees of polymerizations 54, 146, and 238) end-functionalized poly(1,3-cyclohexadiene) (PCHD) chains from benzene solutions onto silicon or quartz substrates, followed by aromatization of the end-attached PCHD chains on the surface. The approach allows the thickness (grafting density) of the brushes to be easily varied. The dry brushes before and after aromatization are characterized by ellipsometry, atomic force microscopy, grazing angle attenuated total reflectance Fourier transform infrared spectroscopy, and UV-Vis spectroscopy. The properties of the PPP brushes are compared with those of films made using oligo-paraphenylenes and with ab initio density functional theory simulations of optical properties. Our results suggest conversion to fully aromatized, end-tethered PPP polymer brushes having effective conjugation lengths of 5 phenyl units.",

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author = "Jose Alonzo and Jihua Chen and Jamie Messman and Xiang Yu and Kunlun Hong and Suxiang Deng and Onome Swader and Mark Dadmun and Ankner, {John F.} and Phillip Britt and Mays, {Jimmy W.} and Massimo Malagoli and Sumpter, {Bobby G.} and Br{\'e}das, {Jean Luc} and Kilbey, {S. Michael}",

year = "2011",

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doi = "10.1021/cm201819p",

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T1 - Assembly and characterization of well-defined high-molecular-weight poly(p -phenylene) polymer brushes

AU - Alonzo, Jose

AU - Chen, Jihua

AU - Messman, Jamie

AU - Yu, Xiang

AU - Hong, Kunlun

AU - Deng, Suxiang

AU - Swader, Onome

AU - Dadmun, Mark

AU - Ankner, John F.

AU - Britt, Phillip

AU - Mays, Jimmy W.

AU - Malagoli, Massimo

AU - Sumpter, Bobby G.

AU - Brédas, Jean Luc

AU - Kilbey, S. Michael

PY - 2011/10/11

Y1 - 2011/10/11

N2 - The assembly and characterization of well-defined, end-tethered poly(p-phenylene) (PPP) brushes having high molecular weight, low polydispersity and high 1,4-stereoregularity are presented. The PPP brushes are formed using a precursor route that relies on either self-assembly or spin coating of high molecular weight (degrees of polymerizations 54, 146, and 238) end-functionalized poly(1,3-cyclohexadiene) (PCHD) chains from benzene solutions onto silicon or quartz substrates, followed by aromatization of the end-attached PCHD chains on the surface. The approach allows the thickness (grafting density) of the brushes to be easily varied. The dry brushes before and after aromatization are characterized by ellipsometry, atomic force microscopy, grazing angle attenuated total reflectance Fourier transform infrared spectroscopy, and UV-Vis spectroscopy. The properties of the PPP brushes are compared with those of films made using oligo-paraphenylenes and with ab initio density functional theory simulations of optical properties. Our results suggest conversion to fully aromatized, end-tethered PPP polymer brushes having effective conjugation lengths of 5 phenyl units.

AB - The assembly and characterization of well-defined, end-tethered poly(p-phenylene) (PPP) brushes having high molecular weight, low polydispersity and high 1,4-stereoregularity are presented. The PPP brushes are formed using a precursor route that relies on either self-assembly or spin coating of high molecular weight (degrees of polymerizations 54, 146, and 238) end-functionalized poly(1,3-cyclohexadiene) (PCHD) chains from benzene solutions onto silicon or quartz substrates, followed by aromatization of the end-attached PCHD chains on the surface. The approach allows the thickness (grafting density) of the brushes to be easily varied. The dry brushes before and after aromatization are characterized by ellipsometry, atomic force microscopy, grazing angle attenuated total reflectance Fourier transform infrared spectroscopy, and UV-Vis spectroscopy. The properties of the PPP brushes are compared with those of films made using oligo-paraphenylenes and with ab initio density functional theory simulations of optical properties. Our results suggest conversion to fully aromatized, end-tethered PPP polymer brushes having effective conjugation lengths of 5 phenyl units.

KW - electronic structure

KW - poly(para-phenylene)

KW - polymer brush

KW - thin film

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ER -

Assembly and characterization of well-defined high-molecular-weight poly(p -phenylene) polymer brushes

Abstract

Keywords

ASJC Scopus subject areas

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