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Side-chain functionalized luminescen...

Georgia Institute of Technology.

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Side-chain functionalized luminescent polymers for organic light-emitting diode applications.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Side-chain functionalized luminescent polymers for organic light-emitting diode applications./
作者:	Kimyonok, Alpay.
面頁冊數:	211 p.
附註:	Adviser: Marcus Weck.
Contained By:	Dissertation Abstracts International70-09B.
標題:	Chemistry, Organic. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3376308
ISBN:	9781109372854

Side-chain functionalized luminescent polymers for organic light-emitting diode applications.
Kimyonok, Alpay.

Side-chain functionalized luminescent polymers for organic light-emitting diode applications. - 211 p.

Adviser: Marcus Weck.

Thesis (Ph.D.)--Georgia Institute of Technology, 2008.

The major drawback for the fabrication of the small molecule based OLEDs is that these molecules are difficult to process. They have to be either vacuum-deposited or doped into a host material, often resulting in phase separation and poor device performance. A more appealing strategy is the employment of polymers that can be solution-processed, which is less costly compared to vacuum deposition technique. In addition to the reduced cost, solution processability allows for large surface area fabrication. Furthermore, polymers are suitable for flexible displays, and the emission properties of the polymers can be tailored by various synthetic strategies. Finally, polymers can be multi-functional; more than one electroactive group such as electron- and hole-transport compounds along with the emissive material can be incorporated into polymers, thus, creating materials that can combine properties of different layers in just one layer.

ISBN: 9781109372854Subjects--Topical Terms:

516206
Chemistry, Organic.

Side-chain functionalized luminescent polymers for organic light-emitting diode applications.
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245 1 0 $a Side-chain functionalized luminescent polymers for organic light-emitting diode applications.
300 $a 211 p.
500 $a Adviser: Marcus Weck.
500 $a Source: Dissertation Abstracts International, Volume: 70-09, Section: B, page: .
502 $a Thesis (Ph.D.)--Georgia Institute of Technology, 2008.
520 $a The major drawback for the fabrication of the small molecule based OLEDs is that these molecules are difficult to process. They have to be either vacuum-deposited or doped into a host material, often resulting in phase separation and poor device performance. A more appealing strategy is the employment of polymers that can be solution-processed, which is less costly compared to vacuum deposition technique. In addition to the reduced cost, solution processability allows for large surface area fabrication. Furthermore, polymers are suitable for flexible displays, and the emission properties of the polymers can be tailored by various synthetic strategies. Finally, polymers can be multi-functional; more than one electroactive group such as electron- and hole-transport compounds along with the emissive material can be incorporated into polymers, thus, creating materials that can combine properties of different layers in just one layer.
520 $a This thesis aims to provide a detailed understanding of side-chain functionalized polymers as emissive materials for OLEDs. The proceeding chapters will discuss the syntheses and photophysical properties of these solution-processable materials as well as the effects of metal types, polymer backbones, chain lengths, spacer types and lengths, host types, and concentrations of the metal complexes on the emission properties and device performance.
520 $a The polymers were functionalized with host materials along with the metal complexes to enhance the charge transport and to obtain energy transfer from the host to the complex. The physical and photophysical properties of the polymers were tuned by changing the backbone and the metal complex. Poly(norbornene)s, poly(cyclooctene)s, and poly(styrene)s were studied. The differences in the glass transition temperatures and PDIs of the polymers indicated that device performances might be affected by the polymer type due to the differences in the processability of the polymers. In addition to the backbone, it was found that device performance is dependent on various parameters such as molecular weight, metal loading, spacer type, and spacer length. In each case, it was found that the polymer backbone does not interfere with the basic photopysical properties of the metal complexes.
520 $a The two main classes of metal complexes studied in this thesis are metalloquinolates and iridium complexes. It was shown that the emission properties of poly(cyclooctene)s containing 8-hydroxyquinolines in their side-chains could be altered by simply changing the metal. Green- and near IR-emitting polymers were synthesized by employing aluminum and ytterbium, respectively. On the other hand, for the iridium complexes, changes in color were achieved by varying the ligands. Iridium containing polymers with emission spectra that span the entire visible spectrum were synthesized by employing the appropriate ligands. It was demonstrated that OLEDs with high efficiencies can be fabricated by using these polymers as the emissive layer.
590 $a School code: 0078.
650 4 $a Chemistry, Organic. $3 516206
650 4 $a Chemistry, Polymer. $3 1018428
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710 2 $a Georgia Institute of Technology. $3 696730
773 0 $t Dissertation Abstracts International $g 70-09B.
790 $a 0078
790 1 0 $a Weck, Marcus, $e advisor
791 $a Ph.D.
792 $a 2008
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3376308