{"id":{"repo_id":"wichita-thes","oai_identifier":"oai:null:10057/15544"},"canonical_url":"https://search.dev.ndltd.org/etd/wichita-thes/oai:null:10057/15544","repository":{"repo_id":"wichita-thes","name":"Wichita State University","base_url":"https://soar.wichita.edu/oai/request"},"display":{"title":"Design, synthesis and study of photophysical properties of Re(I) and Ru(II) metal center organometallic complexes as dyes for harvesting sunlight.","abstract":"Due to fascinating physical and photophysical properties, the Re(I) and Ru(II) metal complexes coordinated with small organic molecules, such as 2,2'-bipyridine, 1,10-phenanthroline, 2,2'-bipyrazine derivatives, are very promising class of compounds in Dye Sensitized Solar Cells (DSSC) or (Grätzel Cell) for solar energy conversion for next-generation photovoltaic devices. Herein, we successfully prepared a series of Re(I) complexes [Re(dcbpy)(CO)3X, Re(dcbpz)(CO)3X, Re(5-COOHphen)(CO)3Cl, [Re(phen)(CO)3(py-CH3COO)Re(phen)(CO)3]+ where X=Cl, Br, I, CN, SCN; dcbpy = 4-4'-dicarboxyl-2,2'-bipyridine; dcbpz = 5-5'-dicarboxyl-2,2'-bipyrazine; py-pyridine; 5-COOH-phen = 5-carboxyl-1,10-phenanthroline, dafo =4,5 diazo fluorene-9-one], rhenium (I) tricarbonyl complexes with bipyrazine derivatives, [Re(bpz)(CO)3Cl, Re(Me-bpz)(CO)3Cl, Re(Me2-bpz)(CO)3Cl, Re((COOCH3)2-bpz)CO)3Cl, Re(pypz)(CO)3Cl] and Ru(II) metal complexes where 2,2'-bipyrazine (bpz), 5-methyl-2,2'-bipyrazine (Me-bpz), 5,5'-dimethyl-2,2'-bipyrazine(Me2-bpz), dimethyl [2,2'-bipyrazine]-5,5'-dicarboxylate ((COOCH3)2-bpz), and 2-(pyridine-2-yl)pyrazine (pypz). A simple and efficient synthetic route is presented for the synthesis of a series of pyrazine compounds coupled with bromo derivatives, which lead formation of the C-C bridged dimers. The structural, physical and photophysical properties of these compounds were thoroughly investigated by various analytical techniques. The band at lower energy observed, which shows the typical metal-to-ligand charge transfer (MLCT) due to the d (PI) -> (PI) * transitions consistent with Re(I) dicarboxylate-bipyridine systems located in the 390 nm to 436 nm region. Very interestingly these compounds showed long lifetimes (τ > 50 ns) that can be attributed to anchoring dicarboxylate groups to TiO2 in DSSC. The optimum efficiency of these DSSC system is about 1%.","abstract_html":"Due to fascinating physical and photophysical properties, the Re(I) and Ru(II) metal complexes coordinated with small organic molecules, such as 2,2'-bipyridine, 1,10-phenanthroline, 2,2'-bipyrazine derivatives, are very promising class of compounds in Dye Sensitized Solar Cells (DSSC) or (Grätzel Cell) for solar energy conversion for next-generation photovoltaic devices. Herein, we successfully prepared a series of Re(I) complexes [Re(dcbpy)(CO)3X, Re(dcbpz)(CO)3X, Re(5-COOHphen)(CO)3Cl, [Re(phen)(CO)3(py-CH3COO)Re(phen)(CO)3]+ where X=Cl, Br, I, CN, SCN; dcbpy = 4-4'-dicarboxyl-2,2'-bipyridine; dcbpz = 5-5'-dicarboxyl-2,2'-bipyrazine; py-pyridine; 5-COOH-phen = 5-carboxyl-1,10-phenanthroline, dafo =4,5 diazo fluorene-9-one], rhenium (I) tricarbonyl complexes with bipyrazine derivatives, [Re(bpz)(CO)3Cl, Re(Me-bpz)(CO)3Cl, Re(Me2-bpz)(CO)3Cl, Re((COOCH3)2-bpz)CO)3Cl, Re(pypz)(CO)3Cl] and Ru(II) metal complexes where 2,2'-bipyrazine (bpz), 5-methyl-2,2'-bipyrazine (Me-bpz), 5,5'-dimethyl-2,2'-bipyrazine(Me2-bpz), dimethyl [2,2'-bipyrazine]-5,5'-dicarboxylate ((COOCH3)2-bpz), and 2-(pyridine-2-yl)pyrazine (pypz). A simple and efficient synthetic route is presented for the synthesis of a series of pyrazine compounds coupled with bromo derivatives, which lead formation of the C-C bridged dimers. The structural, physical and photophysical properties of these compounds were thoroughly investigated by various analytical techniques. The band at lower energy observed, which shows the typical metal-to-ligand charge transfer (MLCT) due to the d (PI) -> (PI) * transitions consistent with Re(I) dicarboxylate-bipyridine systems located in the 390 nm to 436 nm region. Very interestingly these compounds showed long lifetimes (τ > 50 ns) that can be attributed to anchoring dicarboxylate groups to TiO2 in DSSC. The optimum efficiency of these DSSC system is about 1%.","abstract_has_math":false,"creators":["Komreddy, Venugopal R."],"institution":"Wichita State University","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Rillema, D. Paul"],"committee_chairs":[],"committee_members":[],"year":2018,"date_issued":"2018-07","date_published":"2018-07","updated_at":"2026-08-21T16:50:55Z","subjects":[],"languages":["en_US"],"rights":["Copyright 2018 by Venugopal Reddy Komreddy All Rights Reserved"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["d18034"],"render_values":[{"text":"d18034","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/10057/15544","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"source_record":{"url":"https://soar.wichita.edu/oai/request?verb=GetRecord&metadataPrefix=dim&identifier=oai%3Anull%3A10057%2F15544","prefix":"dim"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Rillema, D. 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Herein, we successfully prepared a series of Re(I) complexes [Re(dcbpy)(CO)3X, Re(dcbpz)(CO)3X, Re(5-COOHphen)(CO)3Cl, [Re(phen)(CO)3(py-CH3COO)Re(phen)(CO)3]+ where X=Cl, Br, I, CN, SCN; dcbpy = 4-4'-dicarboxyl-2,2'-bipyridine; dcbpz = 5-5'-dicarboxyl-2,2'-bipyrazine; py-pyridine; 5-COOH-phen = 5-carboxyl-1,10-phenanthroline, dafo =4,5 diazo fluorene-9-one], rhenium (I) tricarbonyl complexes with bipyrazine derivatives, [Re(bpz)(CO)3Cl, Re(Me-bpz)(CO)3Cl, Re(Me2-bpz)(CO)3Cl, Re((COOCH3)2-bpz)CO)3Cl, Re(pypz)(CO)3Cl] and Ru(II) metal complexes where 2,2'-bipyrazine (bpz), 5-methyl-2,2'-bipyrazine (Me-bpz), 5,5'-dimethyl-2,2'-bipyrazine(Me2-bpz), dimethyl [2,2'-bipyrazine]-5,5'-dicarboxylate ((COOCH3)2-bpz), and 2-(pyridine-2-yl)pyrazine (pypz). A simple and efficient synthetic route is presented for the synthesis of a series of pyrazine compounds coupled with bromo derivatives, which lead formation of the C-C bridged dimers. The structural, physical and photophysical properties of these compounds were thoroughly investigated by various analytical techniques. The band at lower energy observed, which shows the typical metal-to-ligand charge transfer (MLCT) due to the d (PI) -> (PI) * transitions consistent with Re(I) dicarboxylate-bipyridine systems located in the 390 nm to 436 nm region. Very interestingly these compounds showed long lifetimes (τ > 50 ns) that can be attributed to anchoring dicarboxylate groups to TiO2 in DSSC. The optimum efficiency of these DSSC system is about 1%."]},{"key":"dc:title","label":"Title","values":["Design, synthesis and study of photophysical properties of Re(I) and Ru(II) metal center organometallic complexes as dyes for harvesting sunlight."]}]}],"canonical_facts":{"dc:contributor.advisor":["Rillema, D. Paul"],"dc:creator":["Komreddy, Venugopal R."],"dc:date.accessioned":["2018-10-11T18:06:26Z"],"dc:date.available":["2018-10-11T18:06:26Z"],"dc:date.issued":["2018-07"],"dc:description":["Thesis (Ph.D.)-- Wichita State University, College of Liberal Arts and Sciences, Dept. of Chemistry"],"dc:description.abstract":["Due to fascinating physical and photophysical properties, the Re(I) and Ru(II) metal complexes coordinated with small organic molecules, such as 2,2'-bipyridine, 1,10-phenanthroline, 2,2'-bipyrazine derivatives, are very promising class of compounds in Dye Sensitized Solar Cells (DSSC) or (Grätzel Cell) for solar energy conversion for next-generation photovoltaic devices. Herein, we successfully prepared a series of Re(I) complexes [Re(dcbpy)(CO)3X, Re(dcbpz)(CO)3X, Re(5-COOHphen)(CO)3Cl, [Re(phen)(CO)3(py-CH3COO)Re(phen)(CO)3]+ where X=Cl, Br, I, CN, SCN; dcbpy = 4-4'-dicarboxyl-2,2'-bipyridine; dcbpz = 5-5'-dicarboxyl-2,2'-bipyrazine; py-pyridine; 5-COOH-phen = 5-carboxyl-1,10-phenanthroline, dafo =4,5 diazo fluorene-9-one], rhenium (I) tricarbonyl complexes with bipyrazine derivatives, [Re(bpz)(CO)3Cl, Re(Me-bpz)(CO)3Cl, Re(Me2-bpz)(CO)3Cl, Re((COOCH3)2-bpz)CO)3Cl, Re(pypz)(CO)3Cl] and Ru(II) metal complexes where 2,2'-bipyrazine (bpz), 5-methyl-2,2'-bipyrazine (Me-bpz), 5,5'-dimethyl-2,2'-bipyrazine(Me2-bpz), dimethyl [2,2'-bipyrazine]-5,5'-dicarboxylate ((COOCH3)2-bpz), and 2-(pyridine-2-yl)pyrazine (pypz). A simple and efficient synthetic route is presented for the synthesis of a series of pyrazine compounds coupled with bromo derivatives, which lead formation of the C-C bridged dimers. The structural, physical and photophysical properties of these compounds were thoroughly investigated by various analytical techniques. The band at lower energy observed, which shows the typical metal-to-ligand charge transfer (MLCT) due to the d (PI) -> (PI) * transitions consistent with Re(I) dicarboxylate-bipyridine systems located in the 390 nm to 436 nm region. Very interestingly these compounds showed long lifetimes (τ > 50 ns) that can be attributed to anchoring dicarboxylate groups to TiO2 in DSSC. The optimum efficiency of these DSSC system is about 1%."],"dc:identifier.other":["d18034"],"dc:identifier.uri":["http://hdl.handle.net/10057/15544"],"dc:language.iso":["en_US"],"dc:publisher":["Wichita State University"],"dc:rights":["Copyright 2018 by Venugopal Reddy Komreddy All Rights Reserved"],"dc:title":["Design, synthesis and study of photophysical properties of Re(I) and Ru(II) metal center organometallic complexes as dyes for harvesting sunlight."],"dc:type":["Dissertation"]},"updated_at":"2026-08-21T16:50:55Z"}