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001 ocn957491797;

003 OCoLC;

005 20170127100627.0;

006 m o d ;

007 cr unu||||||||;

008 160829s2016 ncua obm 000 0 eng d;

035 a| (Sirsi) o957491797;

035 a| (OCoLC)957491797;

049 a| EREE;

090 a| QC476.7;

100 1 a| Mroz, Robert,e| author.?| UNAUTHORIZED;

245 14 a| The synthesis, structure and photophysical properties of phosphorescent cyclometalated N^N^C-coordinated platinum complexes /c| by Robert Mroz.;

264 1 a| [Greenville, N.C.] :b| [East Carolina University],c| 2016.;

300 a| 134 pages :b| illustrations (some color);

336 a| textb| txt2| rdacontent;

337 a| computerb| c2| rdamedia;

338 a| online resourceb| cr2| rdacarrier;

347 a| text fileb| PDFc| 3.1 MB2| rda;

538 a| System requirements: Adobe Reader.;

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

502 b| M.S.c| East Carolina Universityd| 2016.;

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

500 a| Advisor: Shouquan Huo.;

500 a| Title from PDF t.p. (viewed September 21, 2016).;

520 3 a| Phosphorescent materials based on cyclometalated platinum complexes have attracted a great deal of attention because of their potential in chemical, biological and optoelectronic applications, specifically as emitters in organic light-emitting diode devices. In addition, development of phosphorescent materials emitting in the deep red and/or near infrared region have become a popular area of focus because of their capabilities as chemosensors, in solar cells and bioimaging dyes. Several classes of phosphorescent cyclometalated platinum complexes based on tridentate and tetradentate ligands have already been developed by our lab. In this study, two series of cyclometalated N^N^C Pt(II) complexes 1a-6a and 1b-6b, were designed to emit throughout a wide range of the visible spectrum and were successfully synthesized bearing either a phenyl acetylide or phenyl ancillary ligand. The photophysical properties of complexes can be tuned as desired through methodical modifications of the cyclometalating or ancillary ligand with varying electron accepting or donating moieties. Photophysical studies were conducted on the synthesized complexes and found emission wavelengths ranging from 496-643 nm, quantum yield ([Phi]p) values between 43.0% and [less than] 0.1% and lifetimes ([tau]) as long as 13.1 [micro]s at 298 K. TD-DFT calculations of ground state HOMO and LUMO orbitals, as well as X-ray crystallographic analysis of select complexes were conducted and analyzed. The data comparison of the obtained results between the phenyl acetylide and phenyl coordinated complexes assists in identifying any structure-photophysical property relationships present, which will be discussed in detail.;

504 a| Includes bibliographical references.;

650 0 a| Phosphors.=| ^A115921;

650 0 a| Platinum.=| ^A89154;

650 0 a| Ligands.=| ^A8779;

653 a| Complexes;

653 a| Synthesis;

700 1 a| Huo, Shouquan,e| degree supervisor.?| UNAUTHORIZED;

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

856 40 z| Access via ScholarShipu| http://hdl.handle.net/10342/5913;

949 o| wjh;

994 a| C0b| ERE;

596 a| 1 4;

998 a| 4511344;

999 a| CLICK ON WEB ADDRESSw| ASISc| 1i| 4511344-1001l| JNETm| JOYNERr| Ys| Yt| JNE3ETDu| 8/29/2016x| ETDz| JERESOURCE;

999 a| CLICK ON WEB ADDRESSw| ASISc| 1i| 4511344-2001l| HSLELECm| HSLr| Ys| Yt| HEETDu| 8/29/2016x| ETDz| HERESOURCE;

The synthesis, structure and photophysical properties of phosphorescent cyclometalated N^N^C-coordinated platinum complexes / by Robert Mroz.

Author/creator	Mroz, Robert author.
Other author	Huo, Shouquan, degree supervisor.
Other author	East Carolina University. Department of Chemistry.
Format	Theses and dissertations
Publication	[Greenville, N.C.] : [East Carolina University], 2016.
Description	134 pages : illustrations (some color)
Supplemental Content	Access via ScholarShip
Subjects	Phosphors. Platinum. Ligands.

Summary	Phosphorescent materials based on cyclometalated platinum complexes have attracted a great deal of attention because of their potential in chemical, biological and optoelectronic applications, specifically as emitters in organic light-emitting diode devices. In addition, development of phosphorescent materials emitting in the deep red and/or near infrared region have become a popular area of focus because of their capabilities as chemosensors, in solar cells and bioimaging dyes. Several classes of phosphorescent cyclometalated platinum complexes based on tridentate and tetradentate ligands have already been developed by our lab. In this study, two series of cyclometalated N^N^C Pt(II) complexes 1a-6a and 1b-6b, were designed to emit throughout a wide range of the visible spectrum and were successfully synthesized bearing either a phenyl acetylide or phenyl ancillary ligand. The photophysical properties of complexes can be tuned as desired through methodical modifications of the cyclometalating or ancillary ligand with varying electron accepting or donating moieties. Photophysical studies were conducted on the synthesized complexes and found emission wavelengths ranging from 496-643 nm, quantum yield ([Phi]p) values between 43.0% and [less than] 0.1% and lifetimes ([tau]) as long as 13.1 [micro]s at 298 K. TD-DFT calculations of ground state HOMO and LUMO orbitals, as well as X-ray crystallographic analysis of select complexes were conducted and analyzed. The data comparison of the obtained results between the phenyl acetylide and phenyl coordinated complexes assists in identifying any structure-photophysical property relationships present, which will be discussed in detail.
General note	Presented to the faculty of the Department of Chemistry.
General note	Advisor: Shouquan Huo.
General note	Title from PDF t.p. (viewed September 21, 2016).
Dissertation note	M.S. East Carolina University 2016.
Bibliography note	Includes bibliographical references.
Technical details	System requirements: Adobe Reader.
Technical details	Mode of access: World Wide Web.

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The synthesis, structure and photophysical properties of phosphorescent cyclometalated N^N^C-coordinated platinum complexes / by Robert Mroz.

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