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1. 安徽工业大学 冶金工程学院,安徽 马鞍山,243002
2. 安徽工业大学 分子工程与应用化学研究所,安徽 马鞍山,243002
收稿日期:2014-03-03,
修回日期:2014-04-09,
纸质出版日期:2014-07-03
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童碧海, 马鹏, 张曼等. 以邻菲罗啉为第二配体的铱配合物及其电致化学发光性能[J]. 发光学报, 2014,35(7): 813-818
TONG Bi-hai, MA Peng, ZHANG Man etc. Electrochemiluminescence Properties of Cylcometalated Iridium(Ⅲ) Complexes Based on 1, 10-Phenanthroline Auxiliary Ligands[J]. Chinese Journal of Luminescence, 2014,35(7): 813-818
童碧海, 马鹏, 张曼等. 以邻菲罗啉为第二配体的铱配合物及其电致化学发光性能[J]. 发光学报, 2014,35(7): 813-818 DOI: 10.3788/fgxb20143507.0813.
TONG Bi-hai, MA Peng, ZHANG Man etc. Electrochemiluminescence Properties of Cylcometalated Iridium(Ⅲ) Complexes Based on 1, 10-Phenanthroline Auxiliary Ligands[J]. Chinese Journal of Luminescence, 2014,35(7): 813-818 DOI: 10.3788/fgxb20143507.0813.
设计合成了一系列以邻菲罗啉为第二配体的离子型环金属铱配合物,通过核磁共振和质谱分析对其结构进行了表征,通过紫外吸收光谱、荧光光谱和循环伏安法对其光物理性质进行了研究,并测试了其电致化学发光性能。结果表明:配合物
1
[(pq)
2
Ir(phen)](PF
6
)和
2
[(dpq)
2
Ir(phen)](PF
6
)波峰在554.5 nm和566.5 nm处,发射黄色光;
3
[(pqcm)
2
Ir(phen)](PF
6
)和
4
[(pqca)
2
Ir(phen)](PF
6
)波峰在621 nm和618.5 nm处,发射红色光。几种配合物的荧光量子效率在2.5%~7.9%之间,配合物
1
的量子效率最高,为7.9%。配合物
1
的电致发光效率是最好的,在相同条件下为三联吡啶钌([Ru(bpy)
3
]
2+
)的 9.50倍,表明该铱配合物在电致化学发光领域有很好的应用潜力。
It is significant to develop new cyclometalated iridium (Ⅲ) complexes with phenylquinoline derivatives because of their good luminescence property. Structure of these complexes were characterized by means of NMR and mass spectra. Photophysical properties were detected by means of ultraviolet spectra
fluorescence spectra and cyclic voltammetry(CV). The electrochemiluminescence properities were also studied. According to the ultraviolet and fluorescence spectra
the iridium(Ⅲ) complex
1
[(pq)
2
Ir(phen)](PF
6
) and
2
[(dpq)
2
Ir(phen)](PF
6
) emit yellow light centered at 554.5 nm and 566.5 nm
while the iridium(Ⅲ) complex
3
[(pqcm)
2
Ir(phen)](PF
6
) and
4
[(pqca)
2
Ir(phen)](PF
6
) emit red light centered at 621 nm and 618.5 nm
which are desirable for organic light-emitting device applications. Their quantum efficiencies are from 2.5% to 7.9%
and the complex
1
is as high as 7.9%. The ECL efficiency of
1
is the highest of all
which is 9.50 times than that of [Ru(bpy)
3
2+
]reference substance. The results suggest that the iridium complex
1
has a great application potential in ECL detection.
Ceroni P, Bergamini G, Balzani V. Old molecules, new concepts: [Ru(bpy)3]2+ as a molecular encoder-decoder [J]. Angewandte Chemie, 2009, 121(45):8668-8670.
Sun S Q, Song Q J, Yuan H F, et al. Solid-state electrochemiluminescence of a novel iridium (Ⅲ) complex [J]. Chin. Chem. Lett.(中国化学快报), 2008, 19(12):1509-1512 (in English).
Shan G G. Study on The Synthesis and Properties of Novel Cationic Iridium Metal Complexes[D]. Changchun: Northeast Normal University, 2012.
Kim J I, Shin I S, Kim H, et al. Efficient electrogenerated chemiluminescence from cyclometalated iridium (Ⅲ) complexes [J]. J. Am. Chem. Soc., 2005, 127(6):1614-1615.
Bolink H J, Coronado E, Santamaria S G, et al. Highly phosphorescent perfect green emitting iridium (Ⅲ) complex for application in OLEDs [J]. Chem. Commun., 2007(31):3276-3278.
Coppo P, Plummer E A, De Cola L. Tuning iridium (Ⅲ) phenylpyridine complexes in the "almost blue" region [J]. Chem. Commun., 2004(15):1774-1775.
Sajoto T, Djurovich P I, Tamayo A, et al. Blue and near-UV phosphorescence from iridium complexes with cyclometalated pyrazolyl or N-heterocyclic carbene ligands [J]. Inorg. Chem., 2005, 44(22):7992-8003.
You Y, Park S Y. Inter-ligand energy transfer and related emission change in the cyclometalated heteroleptic iridium complex: Facile and efficient color tuning over the whole visible range by the ancillary ligand structure [J]. J. Am. Chem. Soc., 2005, 127(36):12438-12439.
Tong B, Mei Q, Li Z W, et al. Investigation on the electrochemiluminescence properties of a series of cyclometalated iridium (Ⅲ) complexes based on 2-phenylquinoline derivatives [J]. Acta Chim. Sinica (化学学报), 2012, 70(23):2451-2456 (in Chinese).
Tong B, Qiang J, Mei Q, et al. Tuning the photophysical properties of cyclometalated Ir (Ⅲ) complexes by a trifluoroacetyl group [J]. Zeitschrift fur Naturforschung BJ.Chem. Sci., 2012, 67(3):213-218.
Xiong L, Zhao Q, Chen H, et al. Phosphorescence imaging of homocysteine and cysteine in living cells based on a cationic iridium (Ⅲ) complex [J]. Inorg. Chem., 2010, 49(14):6402-6408.
Caspar J V, Meyer T J. Photochemistry of tris (2, 2'-bipyridine) ruthenium (2+) ion (Ru (bpy)32+). Solvent effects [J]. J. Am. Chem. Soc., 1983, 105(17):5583-5590.
Shi M M, Deng D, Chen L, et al. Design and synthesis of dithieno[3,2-b:2' 3'-d]pyrrole-based conjugated polymers for photovoltaic applications: Consensus between low bandgap and low HOMO energy level [J]. J. Polymer Sci. Part A: Polymer Chem., 2011, 49(6):1453-1461.
Lin J. Study on The Synthesis and Electrophosphorescent Properties of A New Ir Complex and Their Application in Biologic Analyze[D]. Qingdao: Qingdao University of Science & Technology, 2011.
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