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001 ocn810178259;

003 OCoLC;

005 20141212032707.0;

006 m o d ;

007 cr bn|||||||||;

008 120918s2012 ncua ob 000 0 eng d;

035 a| (Sirsi) o810178259;

035 a| (OCoLC)810178259;

049 a| EREE;

090 a| QD412.P8;

100 1 a| Ravindranathan, Deepak.?| UNAUTHORIZED;

245 10 a| Synthesis and photophysical characterization of tridentate C^N*N platinum (II) complexes :b| and, Investigation of selectivity in C-H bond activation by platinum /c| by Deepak Ravindranathan.;

246 30 a| Synthesis and photophysical characterization of tridentate C^N*N platinum (II) complexes;

246 30 a| Investigation of selectivity in C-H bond activation by platinum;

260 a| [Greenville, N.C.] :b| East Carolina University,c| 2012.;

300 a| 88 pages :b| illustrations (some color), digital, PDF file;

336 a| text2| rdacontent;

337 a| computer2| rdamedia;

338 a| online resource2| rdacarrier;

538 a| System requirements: Adobe Reader.;

538 a| Mode of access: World Wide Web.;

502 b| M.S.c| East Carolina Universityd| 2012.;

500 a| Presented to the faculty of the Department of Chemistry.;

500 a| Advisor: Shouquan Huo.;

500 a| Title from PDF t.p. (viewed Oct. 16, 2012).;

520 3 a| The synthesis, structure, and photophysical properties of a series of novel, highly luminescent tridentate platinum complexes with general coordination geometry of (C^N*N)-PtL are reported, where "C^N" denotes a coordination of C and N to the platinum to form a five-membered metallacycle and "N*N" denotes a coordination of two N atoms to the platinum to form a six-membered metallacycle; L is a mono anionic ligand such as halides or acetylides. Compared to the known (C^N^N)-PtL type of complexes that were reported to emit with low quantum yields, the structural modification leads to dramatic improvements in phosphorescence efficiency. For example, new complexes (C^N*N)-PtL with L = hexylacetylide and phenylacetylide emitted intensely with quantum yields of 47% and 56%, respectively, latter of which is among the highest quantum yields reported so far for cyclometalated platinum (II) complexes. Selectivity in C-H bond activation by platinum and the exact mechanism of cycloplatination are issues that still remain unclear. A series of ligands which include sp²/sp³, primary/secondary sp³ C-H bonds, and aromatic/vinylic sp² C-H bonds with a carbon linker between the bipyridine and the carbon groups have been prepared. All ligands have been attempted for cycloplatination in glacial acetic acid and acetonitrile. All ligands produced the same sp² C-H bond activated complex in both solvents, which suggests that the linker atom does play a role on selectivity.;

504 a| Includes bibliographical references.;

650 0 a| Organoplatinum compounds.=| ^A103828;

650 0 a| Platinum.=| ^A89154;

650 0 a| Chemical bonds.=| ^A5651;

653 a| Chemistry;

700 1 a| Huo, Shouquan.?| UNAUTHORIZED;

710 2 a| East Carolina University.b| Department of Chemistry.?| UNAUTHORIZED;

856 40 z| Access via ScholarShipu| http://hdl.handle.net/10342/4007;

949 o| jgml;

994 a| C0b| ERE;

596 a| 1 4;

998 a| 3108517;

999 a| CLICK ON WEB ADDRESSw| ASISc| 1i| 3108517-1001l| JNETm| JOYNERr| Ys| Yt| JNE3ETDu| 9/18/2012x| ETDz| JERESOURCE;

999 a| CLICK ON WEB ADDRESSw| ASISc| 1i| 3108517-2001l| HSLELECm| HSLr| Ys| Yt| HEETDu| 9/18/2012x| ETDz| HERESOURCE;

Synthesis and photophysical characterization of tridentate C^N*N platinum (II) complexes : and, Investigation of selectivity in C-H bond activation by platinum / by Deepak Ravindranathan.

Author/creator	Ravindranathan, Deepak
Other author	Huo, Shouquan.
Other author	East Carolina University. Department of Chemistry.
Format	Theses and dissertations
Publication Info	[Greenville, N.C.] : East Carolina University, 2012.
Description	88 pages : illustrations (some color), digital, PDF file
Supplemental Content	Access via ScholarShip
Subjects	Organoplatinum compounds. Platinum. Chemical bonds.

Portion of title	Synthesis and photophysical characterization of tridentate C^N*N platinum (II) complexes
Portion of title	Investigation of selectivity in C-H bond activation by platinum
Summary	The synthesis, structure, and photophysical properties of a series of novel, highly luminescent tridentate platinum complexes with general coordination geometry of (C^NN)-PtL are reported, where "C^N" denotes a coordination of C and N to the platinum to form a five-membered metallacycle and "NN" denotes a coordination of two N atoms to the platinum to form a six-membered metallacycle; L is a mono anionic ligand such as halides or acetylides. Compared to the known (C^N^N)-PtL type of complexes that were reported to emit with low quantum yields, the structural modification leads to dramatic improvements in phosphorescence efficiency. For example, new complexes (C^N*N)-PtL with L = hexylacetylide and phenylacetylide emitted intensely with quantum yields of 47% and 56%, respectively, latter of which is among the highest quantum yields reported so far for cyclometalated platinum (II) complexes. Selectivity in C-H bond activation by platinum and the exact mechanism of cycloplatination are issues that still remain unclear. A series of ligands which include sp²/sp³, primary/secondary sp³ C-H bonds, and aromatic/vinylic sp² C-H bonds with a carbon linker between the bipyridine and the carbon groups have been prepared. All ligands have been attempted for cycloplatination in glacial acetic acid and acetonitrile. All ligands produced the same sp² C-H bond activated complex in both solvents, which suggests that the linker atom does play a role on selectivity.
General note	Presented to the faculty of the Department of Chemistry.
General note	Advisor: Shouquan Huo.
General note	Title from PDF t.p. (viewed Oct. 16, 2012).
Dissertation note	M.S. East Carolina University 2012.
Bibliography note	Includes bibliographical references.
Technical details	System requirements: Adobe Reader.
Technical details	Mode of access: World Wide Web.

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Synthesis and photophysical characterization of tridentate C^N*N platinum (II) complexes : and, Investigation of selectivity in C-H bond activation by platinum / by Deepak Ravindranathan.

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