Syntheses, structures, and sensitized lanthanide luminescence by Pt -> Ln (Ln = Eu, Nd, Yb) energy transfer for heteronuclear PtLn(2) and Pt(2)Ln(4) complexes with a terpyridyl-functionalized alkynyl ligand

	Syntheses, structures, and sensitized lanthanide luminescence by Pt -> Ln (Ln = Eu, Nd, Yb) energy transfer for heteronuclear PtLn(2) and Pt(2)Ln(4) complexes with a terpyridyl-functionalized alkynyl ligand
	X. L. Li ; L. X. Shi ; L. Y. Zhang ; H. M. Wen ; Z. N. Chen
刊名	Inorganic Chemistry
	2007-12
卷号	46 期号:25 页码:10892-10900
关键词	near-infrared luminescence mixed-metal platinum(ii)-copper(i) neutral molecular squares d-f heteronuclear photophysical properties acetylide complexes dinuclear complexes enhanced emission excited-states d-block
ISSN号	0020-1669
中文摘要	Reaction of Pt(dppm-P,P')Cl(2) (dppm = 1, 2-bis(diphenylphosphino)methane) with HC CPhtpy (HC CPhtpy = 4'-(4-ethynylphenyi)-2,2':6',2 ''-terpyridine) in the presence of copper(I) iodide and diisopropylamine induced isolation of mononuclear complex cis-Pt(dppm-P,P')(C CPhtpy)2 (1), which can be converted into face-to-face diplatinum(II) species Pt(2)(mu-dppm)(2)(C CPhtpy)(4) (5) when equivalent dppm is added. Incorporating 1 or 5 to Ln(hfac)(3)(H(2)O)(2) (Hhfac = hexafluoroacetylacetone) gave PtLn(2) (Ln = Nd (2), Eu (3), Yb (4)) or Pt(2)Ln(4) (Ln = Nd (6), Eu (7), Gd (8), Yb (9)) adducts with the lanthanide centers chelated by terdentate terpyridyl in the bridging C CPhtpy. The structures of 1, 6, 7, and 9 were determined by X-ray crystallography. Upon excitation at lambda(ex) = 360-450 nm (2-4) or 360-500 nm (6-9), where the Pt(II) alkynyl antenna chromophores absorb strongly but the model complexes Ln(hfaC)3(HC CPhtpy) lack obvious absorption in this region, these PtLn2 and Pt(2)Ln(4) (Ln = Nd, Eu, Yb) species exhibit bandlike lanthanide luminescence that is typical of the corresponding Ln (3+) ions, demonstrating unambiguously that efficient Pt -> Ln energy transfer occurs indeed from the Pt(II) alkynyl antenna chromophores to the lanthanide centers across the bridging C CPhtpy with intramolecular Pt center dot center dot center dot Ln distances being ca. 14.2 angstrom. The Pt -> Ln energy transfer rate (K(ET)) is 6.07 x 10(7) s(-1) for Pt(2)Nd(4) (6) and 2.12 x 10(5) s(-1) for Pt(2)Yb(4) (9) species.
语种	英语
公开日期	2013-04-01
内容类型	期刊论文
源URL	[http://ir.fjirsm.ac.cn/handle/350002/6423]
专题	福建物质结构研究所_中科院福建物质结构研究所_期刊论文
推荐引用方式 GB/T 7714	X. L. Li,L. X. Shi,L. Y. Zhang,et al. Syntheses, structures, and sensitized lanthanide luminescence by Pt -> Ln (Ln = Eu, Nd, Yb) energy transfer for heteronuclear PtLn(2) and Pt(2)Ln(4) complexes with a terpyridyl-functionalized alkynyl ligand[J]. Inorganic Chemistry,2007,46(25):10892-10900.
APA	X. L. Li,L. X. Shi,L. Y. Zhang,H. M. Wen,&Z. N. Chen.(2007).Syntheses, structures, and sensitized lanthanide luminescence by Pt -> Ln (Ln = Eu, Nd, Yb) energy transfer for heteronuclear PtLn(2) and Pt(2)Ln(4) complexes with a terpyridyl-functionalized alkynyl ligand.Inorganic Chemistry,46(25),10892-10900.
MLA	X. L. Li,et al."Syntheses, structures, and sensitized lanthanide luminescence by Pt -> Ln (Ln = Eu, Nd, Yb) energy transfer for heteronuclear PtLn(2) and Pt(2)Ln(4) complexes with a terpyridyl-functionalized alkynyl ligand".Inorganic Chemistry 46.25(2007):10892-10900.