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Synthesis of Monodispersed Aldehyde End-Functionalized Poly (vinylene phenylene)s and Their Block Copolymers Via Coupling Reactions
Date Issued
2006
Date
2006
Author(s)
Chung, Hui-Yi
DOI
zh-TW
Abstract
The self-assembly behavior of block copolymers have attracted widespread interest in both fundamental and technological contexts. There is an even greater interest in conducting/insulating block copolymers for use in organic electronics, e.g. solar cell, light emitting diode etc. The objective of this thesis is to develop methods to synthesis conducting polymers with well-defined structure and molecular weight as well as to develop methods to synthesize the conducting/insulating block copolymers. This thesis is divided into two parts. In the first part of the thesis, soluble and monodispersed conducting polymers of poly(2,5-di(2'-ethylhexyloxy)-1,4- phenylenevinylene) (DEH-PPV) with an aldehyde group at each chain end were successfully synthesized by the Seigrist polycondensation of 2,5-di(2-ethylhexyloxy) -4-methyl-N- benzylideneaniline monomer. The optical and thermal properties of the PPV are examined.
In the second part of the thesis, a method to synthesize DEH-PPV-block-poly (2-vinyl pyridiene) (PPV-P2VP) and DEH-PPV-block-poly (t-butoxy styrene) (PPV-PtBOS) were developed by using condensation reaction of anionically polymerized living P2VPLi and PtBOSLi, respectively with the aldehyde terminated PPV. Transmission electron microscopy of the copolymers shows self-assembled nanostructure with a length scale in the range of 10-20nm.
In the second part of the thesis, a method to synthesize DEH-PPV-block-poly (2-vinyl pyridiene) (PPV-P2VP) and DEH-PPV-block-poly (t-butoxy styrene) (PPV-PtBOS) were developed by using condensation reaction of anionically polymerized living P2VPLi and PtBOSLi, respectively with the aldehyde terminated PPV. Transmission electron microscopy of the copolymers shows self-assembled nanostructure with a length scale in the range of 10-20nm.
Subjects
嵌段式共聚物
尾端官能基化聚(對亞苯基-亞乙烯基)
偶合反應
Block copolymer
End-functionalized. PPV
Coupling reaction
Type
thesis
File(s)
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Name
ntu-95-R93524017-1.pdf
Size
23.53 KB
Format
Adobe PDF
Checksum
(MD5):d3dcdd726dcc99c772ce87ca0c02359f