Synthesis and optical properties of soluble low bandgap poly (pyrrole methine) with alkoxyl substituent - Details

author：

Li, Baoming (Li, Baoming.) ^[1] (Scholars：李宝铭) | Peng, Enkai (Peng, Enkai.) ^[2] | Ye, Leilei (Ye, Leilei.) ^[3] | Wu, Zhiyin (Wu, Zhiyin.) ^[4]

Indexed by：

EI Scopus CSCD

Abstract：

A　soluble　low　bandgap　poly　(pyrrole　methine)　with　alkoxyl　substituent,　poly　{(3-hexanoyl)pyrrole-[2,5-diyl(p-tetradecyloxybenzylidene)]}　(PHPDTBE),　was　synthesized　and　characterized　by　1H　nuclear　magnetic　resonance　(1H-NMR),　Fourier　transform-infrared　(FT-IR),　elemental　analysis　(EA)　and　gel　permeation　chromatography　(GPC).　PHPDTBE　was　readily　soluble　in　weak　polar　organic　solvents.　The　absorption　peaks　of　PHPDTBE　solution　and　film　were　located　at　around　458　and　484　nm,　respectively.　The　optical　bandgaps　of　PHPDTBE　film　for　indirect　allowed　and　direct　allowed　transitions　were　measured　to　be　1.66　and　2.35　eV,　respectively.　PHPDTBE　film　had　few　defects　in　the　energy　band　and　the　Urbach　energy　of　PHPDTBE　film　was　calculated　to　be　about　0.19　eV.　The　resonant　third-order　nonlinear　optical　susceptibilities　of　PHPDTBE　solution　and　film　measured　by　degenerate　four-wave　mixing　(DFWM)　technique　at　532　nm　were　all　in　the　order　of　10–8　esu,　which　was　about　1~3　orders　of　magnitude　larger　than　that　of　the　other　ordinary　π-conjugation　polymers.　©　2016,　Higher　Education　Press　and　Springer-Verlag　Berlin　Heidelberg.

Keyword：

Aromatic compounds Energy gap Four wave mixing Gel permeation chromatography Nuclear magnetic resonance Optical films Optical properties

Community：

[ 1 ] [Li, Baoming]College of Material Science and Engineering, Fuzhou University, Fuzhou; 350108, China
[ 2 ] [Peng, Enkai]College of Material Science and Engineering, Fuzhou University, Fuzhou; 350108, China
[ 3 ] [Ye, Leilei]College of Material Science and Engineering, Fuzhou University, Fuzhou; 350108, China
[ 4 ] [Wu, Zhiyin]College of Material Science and Engineering, Fuzhou University, Fuzhou; 350108, China