Star-shaped electrochemiluminescent metallodendrimers with central polypyridyl Ru(II) complexes: Synthesis and their photophysical and electrochemical properties

Do Nam Lee; Bong Kwan Soh; Shin Han Kim; Young Moo Jun; Sook Hyun Yoon; Won Yong Lee; Byeong Hyo Kim

doi:10.1016/j.jorganchem.2007.11.045

Star-shaped electrochemiluminescent metallodendrimers with central polypyridyl Ru(II) complexes: Synthesis and their photophysical and electrochemical properties

Do Nam Lee, Bong Kwan Soh, Shin Han Kim, Young Moo Jun, Sook Hyun Yoon, Won Yong Lee, Byeong Hyo Kim

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

Several dendritic bridging ligands were designed and synthesized to develop more sensitive and efficient electrochemiluminescent (ECL) polynuclear Ru(II) complexes. Various types of novel two-armed, four-armed and six-armed tris(bipyridyl)ruthenium core dendrimers were synthesized by coordinating dendritic polybipyridyl ligands with Ru(II) complexes, and the effect of the ligand and the dendritic network on the ECL characteristics were studied. Their electrochemical redox potentials, UV, photoluminescence (PL), and relative ECL intensities were also investigated in detail. The synthesized metallodendrimers exhibited strong metal-to-ligand charge transfer (MLCT) absorption at 428-451 nm and emission at 591-601 nm. Most of the newly synthesized metallodendrimers showed enhanced ECL intensities compared to the reference complex, [Ru(o-phen)₃](PF₆)₂. In particular, the ECL intensities of the six-armed heptanuclear ruthenium complexes were almost four times greater than that of [Ru(o-phen)₃]²⁺. These metallodendrimers could be utilized as efficient ECL materials and light emitting devices.

Original language	English
Pages (from-to)	655-666
Number of pages	12
Journal	Journal of Organometallic Chemistry
Volume	693
Issue number	4
DOIs	https://doi.org/10.1016/j.jorganchem.2007.11.045
Publication status	Published - 2008 Feb 15

Bibliographical note

Funding Information:
The financial supports from the RRC program of the Ministry of Commerce, Industry and Energy, from CBMH, and partly from Kwangwoon University in the year 2006 are gratefully acknowledged. S.H.Y also acknowledges the support of the BK 21 program of the Ministry of Education and Human Resources Development.

All Science Journal Classification (ASJC) codes

Biochemistry
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1016/j.jorganchem.2007.11.045

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title = "Star-shaped electrochemiluminescent metallodendrimers with central polypyridyl Ru(II) complexes: Synthesis and their photophysical and electrochemical properties",

abstract = "Several dendritic bridging ligands were designed and synthesized to develop more sensitive and efficient electrochemiluminescent (ECL) polynuclear Ru(II) complexes. Various types of novel two-armed, four-armed and six-armed tris(bipyridyl)ruthenium core dendrimers were synthesized by coordinating dendritic polybipyridyl ligands with Ru(II) complexes, and the effect of the ligand and the dendritic network on the ECL characteristics were studied. Their electrochemical redox potentials, UV, photoluminescence (PL), and relative ECL intensities were also investigated in detail. The synthesized metallodendrimers exhibited strong metal-to-ligand charge transfer (MLCT) absorption at 428-451 nm and emission at 591-601 nm. Most of the newly synthesized metallodendrimers showed enhanced ECL intensities compared to the reference complex, [Ru(o-phen)3](PF6)2. In particular, the ECL intensities of the six-armed heptanuclear ruthenium complexes were almost four times greater than that of [Ru(o-phen)3]2+. These metallodendrimers could be utilized as efficient ECL materials and light emitting devices.",

author = "Lee, {Do Nam} and Soh, {Bong Kwan} and Kim, {Shin Han} and Jun, {Young Moo} and Yoon, {Sook Hyun} and Lee, {Won Yong} and Kim, {Byeong Hyo}",

note = "Funding Information: The financial supports from the RRC program of the Ministry of Commerce, Industry and Energy, from CBMH, and partly from Kwangwoon University in the year 2006 are gratefully acknowledged. S.H.Y also acknowledges the support of the BK 21 program of the Ministry of Education and Human Resources Development.",

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language = "English",

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T2 - Synthesis and their photophysical and electrochemical properties

AU - Lee, Do Nam

AU - Soh, Bong Kwan

AU - Kim, Shin Han

AU - Jun, Young Moo

AU - Yoon, Sook Hyun

AU - Lee, Won Yong

AU - Kim, Byeong Hyo

N1 - Funding Information: The financial supports from the RRC program of the Ministry of Commerce, Industry and Energy, from CBMH, and partly from Kwangwoon University in the year 2006 are gratefully acknowledged. S.H.Y also acknowledges the support of the BK 21 program of the Ministry of Education and Human Resources Development.

PY - 2008/2/15

Y1 - 2008/2/15

N2 - Several dendritic bridging ligands were designed and synthesized to develop more sensitive and efficient electrochemiluminescent (ECL) polynuclear Ru(II) complexes. Various types of novel two-armed, four-armed and six-armed tris(bipyridyl)ruthenium core dendrimers were synthesized by coordinating dendritic polybipyridyl ligands with Ru(II) complexes, and the effect of the ligand and the dendritic network on the ECL characteristics were studied. Their electrochemical redox potentials, UV, photoluminescence (PL), and relative ECL intensities were also investigated in detail. The synthesized metallodendrimers exhibited strong metal-to-ligand charge transfer (MLCT) absorption at 428-451 nm and emission at 591-601 nm. Most of the newly synthesized metallodendrimers showed enhanced ECL intensities compared to the reference complex, [Ru(o-phen)3](PF6)2. In particular, the ECL intensities of the six-armed heptanuclear ruthenium complexes were almost four times greater than that of [Ru(o-phen)3]2+. These metallodendrimers could be utilized as efficient ECL materials and light emitting devices.

AB - Several dendritic bridging ligands were designed and synthesized to develop more sensitive and efficient electrochemiluminescent (ECL) polynuclear Ru(II) complexes. Various types of novel two-armed, four-armed and six-armed tris(bipyridyl)ruthenium core dendrimers were synthesized by coordinating dendritic polybipyridyl ligands with Ru(II) complexes, and the effect of the ligand and the dendritic network on the ECL characteristics were studied. Their electrochemical redox potentials, UV, photoluminescence (PL), and relative ECL intensities were also investigated in detail. The synthesized metallodendrimers exhibited strong metal-to-ligand charge transfer (MLCT) absorption at 428-451 nm and emission at 591-601 nm. Most of the newly synthesized metallodendrimers showed enhanced ECL intensities compared to the reference complex, [Ru(o-phen)3](PF6)2. In particular, the ECL intensities of the six-armed heptanuclear ruthenium complexes were almost four times greater than that of [Ru(o-phen)3]2+. These metallodendrimers could be utilized as efficient ECL materials and light emitting devices.

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Star-shaped electrochemiluminescent metallodendrimers with central polypyridyl Ru(II) complexes: Synthesis and their photophysical and electrochemical properties

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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