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Studies on the structure and morphol...

Yao, Dianjun.

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Studies on the structure and morphology of perylene containing polymers.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Studies on the structure and morphology of perylene containing polymers./
作者:	Yao, Dianjun.
面頁冊數:	157 p.
附註:	Source: Dissertation Abstracts International, Volume: 66-10, Section: B, page: 5432.
Contained By:	Dissertation Abstracts International66-10B.
標題:	Chemistry, Polymer. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NR08355
ISBN:	9780494083550

Studies on the structure and morphology of perylene containing polymers.
Yao, Dianjun.

Studies on the structure and morphology of perylene containing polymers. - 157 p.

Source: Dissertation Abstracts International, Volume: 66-10, Section: B, page: 5432.

Thesis (Ph.D.)--Carleton University (Canada), 2005.

Incorporating functional small molecules as part of a polymer, either in the main chain or side group, is a strategy to improve the mechanical properties, processing options etc. for device applications. The structure and morphology of such polymers play a vital role in the performance and life-time of the device. This thesis describes the structure and morphological studies on polymers containing perylene. We discuss the crystalline conformations of perylene polyimides (PPIs), with alkyl spacers varying in length from C 3 to C12 in Chapter 3. Several changes in the spectra are seen with an increase in annealing time, at a given temperature. With an increase in annealing time, X-ray diffraction patterns indicate a crystal to mesogenic transition.

ISBN: 9780494083550Subjects--Topical Terms:

1018428
Chemistry, Polymer.

Studies on the structure and morphology of perylene containing polymers.
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245 1 0 $a Studies on the structure and morphology of perylene containing polymers.
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500 $a Source: Dissertation Abstracts International, Volume: 66-10, Section: B, page: 5432.
502 $a Thesis (Ph.D.)--Carleton University (Canada), 2005.
520 $a Incorporating functional small molecules as part of a polymer, either in the main chain or side group, is a strategy to improve the mechanical properties, processing options etc. for device applications. The structure and morphology of such polymers play a vital role in the performance and life-time of the device. This thesis describes the structure and morphological studies on polymers containing perylene. We discuss the crystalline conformations of perylene polyimides (PPIs), with alkyl spacers varying in length from C 3 to C12 in Chapter 3. Several changes in the spectra are seen with an increase in annealing time, at a given temperature. With an increase in annealing time, X-ray diffraction patterns indicate a crystal to mesogenic transition.
520 $a The polymers described above are notoriously insoluble in most organic solvents. Co-polymerization to disrupt the crystal packing is a common strategy to impart solubility. Chapter 4 describes the work on a series of perylene-containing block copolyimides with different ratios of perylenetetracarboxylic dianhydride and 4, 4'-(hexafluoroisopropylidene)diphthalic anhydride (6FDA). The copolymers are semi-crystalline up to a concentration of 60% (mol) 6FDA and are " conformational isomorphism" with homopolymer of PPI-12.
520 $a We have also designed a new approach to novel perylene-based self-assembled structure. Self-assembly of the perylene segment leads to vesicle formation of perylene end-capped poly(dimethyl siloxane) (perylene end-cap-PDMS) in non-aqueous media. TEM images of the vesicles show either a bilayer or a trilayer structure depending on the solubility parameter of the solvent. This initial attempt to prepare such vesicles in non-aqueous media may be applicable to similar systems.
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