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Chemistry of novel iridium and plati...

Lamansky, Sergey Alexandrovich.

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Chemistry of novel iridium and platinum ortho-metalated complexes and decaarylplumbocenes for organic light emitting diodes.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Chemistry of novel iridium and platinum ortho-metalated complexes and decaarylplumbocenes for organic light emitting diodes./
Author:	Lamansky, Sergey Alexandrovich.
Description:	226 p.
Notes:	Adviser: Mark E. Thompson.
Contained By:	Dissertation Abstracts International62-09B.
Subject:	Chemistry, Inorganic. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3027737
ISBN:	0493397949

Chemistry of novel iridium and platinum ortho-metalated complexes and decaarylplumbocenes for organic light emitting diodes.
Lamansky, Sergey Alexandrovich.

Chemistry of novel iridium and platinum ortho-metalated complexes and decaarylplumbocenes for organic light emitting diodes. - 226 p.

Adviser: Mark E. Thompson.

Thesis (Ph.D.)--University of Southern California, 2001.

Organic light emitting diodes (OLEDs) represent a highly interdisciplinary subject, where both basic scientific and technological challenges are combined for achieving better device performance and understanding electronic and optical properties of the materials used in these devices. Among current issues in organic LEDs, designing novel emitting and charge transporting materials is a subject of our investigation.

ISBN: 0493397949Subjects--Topical Terms:

517253
Chemistry, Inorganic.

Chemistry of novel iridium and platinum ortho-metalated complexes and decaarylplumbocenes for organic light emitting diodes.
LDR:03840nam 2200289 a 45 001 937745
005 20110511
008 110511s2001 eng d
020 $a 0493397949
035 $a (UnM)AAI3027737
035 $a AAI3027737
040 $a UnM $c UnM
100 1 $a Lamansky, Sergey Alexandrovich. $3 1261602
245 1 0 $a Chemistry of novel iridium and platinum ortho-metalated complexes and decaarylplumbocenes for organic light emitting diodes.
300 $a 226 p.
500 $a Adviser: Mark E. Thompson.
500 $a Source: Dissertation Abstracts International, Volume: 62-09, Section: B, page: 4015.
502 $a Thesis (Ph.D.)--University of Southern California, 2001.
520 $a Organic light emitting diodes (OLEDs) represent a highly interdisciplinary subject, where both basic scientific and technological challenges are combined for achieving better device performance and understanding electronic and optical properties of the materials used in these devices. Among current issues in organic LEDs, designing novel emitting and charge transporting materials is a subject of our investigation.
520 $a In order to utilize both singlet and triplet excited in the electroluminescence process, phosphorescence can be used. The study of the behavior of previously reported <italic>facial</italic> tris-cyclometalated iridium complexes in the OLEDs showed the great potential that this chemistry has for organic optoelectronics. We have synthesized two novel groups of phosphorescent iridium <italic>ortho </italic>-metalated complexes: heteroleptic <italic><underline>C-N</underline></italic> 2Ir(LX) and homoleptic meridianal <italic>mer</italic>-Ir(<italic>C-N </italic>)3 compounds, where <italic><underline>C-N</underline></italic> is a cyclometalated ligand. In the series of <italic><underline>C-N</underline></italic> 2Ir(LX) complexes, LX represents an ancillary, bidentate, monoanionic ligand (e.g. acetylacetonate). Absorption and emission spectroscopy study suggests that <italic><underline>C-N</underline></italic>2Ir(LX) complexes predominantly show either <super>3</super>MLCT or <super>3</super>(π-π*)-based lowest excited state depending on the <italic>C-N</italic> ligand structure. Strong spin-orbit coupling in these complexes allows for efficient emission in the spectral range between 510 and 610 nm. The LX ligand structure influences the emission efficiency dramatically. Emission quenching mechanisms are discussed as well. Both polymer and small-molecule OLEDs prepared with <italic><underline> C-N</underline></italic>2Ir(LX) phosphors exhibit high efficiency. Among platinum cyclometalated phosphors, we have studied homoleptic <italic> cis</italic>-Pt(<italic>C-N</italic>)2 and novel heteroleptic <italic><underline> C-N</underline></italic>Pt(LX) complexes.
520 $a We have studied pentaarylcyclopentadienyl radicals (Cp<super>5&phis; </super>•, &phis; = aryl) as potential charge transporting materials in organic LEDs. Formation of Cp<super>5&phis;</super>• upon decomposition of its precursor PbCp<super>5&phis;</super>2 in the vacuum sublimation process has been investigated by energy dispersive, optical, and EPR spectroscopies. Unlike some protonated analogues (Cp<super>5&phis;</super>H), Cp<super>5&phis; </super>• radicals form uniform, amorphous films upon vacuum deposition from the lead precursors, as shown by scanning electron and atomic force microscopies. Preliminary OLED investigations show that the materials may serve as hole conductors.
590 $a School code: 0208.
650 4 $a Chemistry, Inorganic. $3 517253
690 $a 0488
710 2 0 $a University of Southern California. $3 700129
773 0 $t Dissertation Abstracts International $g 62-09B.
790 $a 0208
790 1 0 $a Thompson, Mark E., $e advisor
791 $a Ph.D.
792 $a 2001
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3027737