Synthesis,Structures and Photophysical Properties of Luminescent Cyanoruthenate(Ⅱ) Complexes with Hydroxylated Bipyridine and Phenanthroline Ligands
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- 英文论文题名：Synthesis,Structures and Photophysical Properties of Luminescent Cyanoruthenate(Ⅱ) Complexes with Hydroxylated Bipyridine and Phenanthroline Ligands
- 论文作者：Xiang Jing
- 英文论文作者：Xiang Jing ; College of Chemistry and Environmental Engineering ; Yangtze University
- 年：2016
- 作者机构：College of Chemistry and Environmental Engineering,Yangtze University;
- 英文论文关键词：Solvent effect ; pH effect ; Cationic effect
- 会议召开时间：2016-09-23
- 会议录名称：中部四省化学化工学会2016年学术年会摘要集
- 语种：英文
- 分类号：O641.4
- 学会代码：JXHX
- 会议名称：中部四省化学化工学会2016年学术年会
- 会议地点：中国江西南昌
- 主办单位：中国化学会湖北代表处
- 学会名称：江西省化学化工学会
- 页数：1
- 文件大小：176k
- 原文格式：D
- 会议级别：地方
摘要
Treatment of(PPh_4)_2[Ru~(II)(PPh_3)2(CN)4](1) with bpyOH and phenOH in DMF afforded two mononuclear compounds fac–(PPh_4)[RuII(bpyOH)(PPh_3)(CN)_3](2) and fac–(PPh_4)[RuII(phenO H)(PPh_3)(CN)_3](3),respectively(bpyOH = 6-hydroxy-2,2‘-bipyridine;phenOH = 2-hydroxy-1,10-phenanthroline).These complexes have been characterized by various spectroscopic techniques.Structures of 1 and 2 have also been determined by X–ray crystallography.Their photophysical and electrochemical properties have been investigated.Detailed study show that 3 displays intense emission with much higher quantum efficiency(Φem = 19.4%) in solution,compared with other related ruthenate(II) diimine complexes.In addition,their solvatochromism,p H effect,ion perturbation have also been investigated.The different photoluminescent behaviors between these complexes and previously reported complex [RuII(phen)(PPh_3)(CN)_3]– suggest that the introduction of hydroxyl group into the diimine ligand would significantly affect their emission properties.Through spectrophotometric titrations,the ground state pK a and excited state p Ka* values,as well as their dynamic p H response ranges of these complexes have been determined.Their photophysical response towards various metal ions have also been studied.
Treatment of(PPh_4)_2[Ru~(II)(PPh_3)2(CN)4](1) with bpyOH and phenOH in DMF afforded two mononuclear compounds fac–(PPh_4)[RuII(bpyOH)(PPh_3)(CN)_3](2) and fac–(PPh_4)[RuII(phenO H)(PPh_3)(CN)_3](3),respectively(bpyOH = 6-hydroxy-2,2‘-bipyridine;phenOH = 2-hydroxy-1,10-phenanthroline).These complexes have been characterized by various spectroscopic techniques.Structures of 1 and 2 have also been determined by X–ray crystallography.Their photophysical and electrochemical properties have been investigated.Detailed study show that 3 displays intense emission with much higher quantum efficiency(Φem = 19.4%) in solution,compared with other related ruthenate(II) diimine complexes.In addition,their solvatochromism,p H effect,ion perturbation have also been investigated.The different photoluminescent behaviors between these complexes and previously reported complex [RuII(phen)(PPh_3)(CN)_3]– suggest that the introduction of hydroxyl group into the diimine ligand would significantly affect their emission properties.Through spectrophotometric titrations,the ground state pK a and excited state p Ka* values,as well as their dynamic p H response ranges of these complexes have been determined.Their photophysical response towards various metal ions have also been studied.
Treatment of(PPh_4)_2[Ru~(II)(PPh_3)2(CN)4](1) with bpyOH and phenOH in DMF afforded two mononuclear compounds fac–(PPh_4)[RuII(bpyOH)(PPh_3)(CN)_3](2) and fac–(PPh_4)[RuII(phenO H)(PPh_3)(CN)_3](3),respectively(bpyOH = 6-hydroxy-2,2‘-bipyridine;phenOH = 2-hydroxy-1,10-phenanthroline).These complexes have been characterized by various spectroscopic techniques.Structures of 1 and 2 have also been determined by X–ray crystallography.Their photophysical and electrochemical properties have been investigated.Detailed study show that 3 displays intense emission with much higher quantum efficiency(Φem = 19.4%) in solution,compared with other related ruthenate(II) diimine complexes.In addition,their solvatochromism,p H effect,ion perturbation have also been investigated.The different photoluminescent behaviors between these complexes and previously reported complex [RuII(phen)(PPh_3)(CN)_3]– suggest that the introduction of hydroxyl group into the diimine ligand would significantly affect their emission properties.Through spectrophotometric titrations,the ground state pK a and excited state p Ka* values,as well as their dynamic p H response ranges of these complexes have been determined.Their photophysical response towards various metal ions have also been studied.
引文
[1]Fujita,K.;Tanaka,Y.;Kobayashi,M.;Yamaguchi,R.J.Am.Chem.Soc.2014,136,4829–4832.