Assembly and Characterization of Well-Defined High-Molecular-Weight Poly(p-phenylene) Polymer Brushes

被引：11

作者：

Alonzo, Jose ^{[1
]}

Chen, Jihua ^{[2
]}

Messman, Jamie ^{[2
]}

Yu, Xiang ^{[3
]}

Hong, Kunlun ^{[2
]}

Deng, Suxiang ^{[5
]}

Swader, Onome ^{[5
]}

Dadmun, Mark ^{[3
,5
]}

Ankner, John F. ^{[1
]}

Britt, Philip ^{[3
]}

Mays, Jimmy W. ^{[2
,3
,5
]}

Malagoli, Massimo ^{[4
,6
,7
]}

Sumpter, Bobby G. ^{[2
,4
]}

Bredas, Jean-Luc ^{[6
,7
]}

Kilbey, S. Michael, II ^{[2
,5
]}

机构：

[1] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA

[2] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA

[3] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA

[4] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA

[5] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA

[6] Georgia Inst Technol, Sch Chem & Biochem, Ctr Computat Mol Sci & Technol, Atlanta, GA 30332 USA

[7] Georgia Inst Technol, Ctr Organ Photon & Elect, Atlanta, GA 30332 USA

来源：

CHEMISTRY OF MATERIALS | 2011年 / 23卷 / 19期

基金：

美国国家科学基金会;

关键词：

poly(para-phenylene); polymer brush; thin film; electronic structure; EFFECTIVE CORE POTENTIALS; 1,3-CYCLOHEXADIENE POLYMERS; CONJUGATED POLYMERS; OPTICAL-PROPERTIES; SPECTRA; MORPHOLOGY; OLIGOMERS; POLY(PARA-PHENYLENE); ABSORPTION; COPOLYMERS;

D O I：

10.1021/cm201819p

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 oligoparaphenylenes 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.

引用

页码：4367 / 4374

页数：8

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