Oxygen and temperature sensitivity of blue to green to yellow light-emitting Pt(II) complexes.

Oxygen and temperature sensitivity of blue to green to yellow light-emitting Pt(II) complexes.
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蓝、绿、黄发光 Pt(II) 配合物的氧和温度敏感性

DOI:
10.1039/c2dt30835e
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发表时间:
2012
影响因子:
4
通讯作者:
E. Holder
E. Holder
中科院分区:
化学2区
文献类型:
--
作者:
C. Karakus;L.H. Fischer;S. Schmeding;J. Hummel;N. Risch;M. Schäferling;E. Holder

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报道了一系列以取代苯基吡啶和四氢喹啉为配体的黄绿色至蓝绿色杂电环金属化Pt(II)(acac)配合物的合成及其光物理性质。研究了这些化合物在聚苯乙烯薄膜中的发光强度和寿命,以及它们对氧和温度的响应。特别是,由于对氧猝灭不敏感,这些配合物很有希望作为光学传感器的惰性参考染料。另一方面,以2-(4-溴苯基)-5,6,7,8-四氢喹啉为C^N配体的Pt(II)配合物表现出较强的温度猝灭效应。在加入聚偏二氯乙烯-共丙烯腈作为阻氧基质共聚物后,对温度的独特响应进行了额外校准。由此产生的黄绿色发射温度传感器标志着可用的主要红色发射温度敏感探头的有趣替代方案。
The synthesis and photophysical properties of a series of yellow-green to blue-green emitting heteroleptic, cyclometalated Pt(II)(acac) complexes based on substituted phenylpyridine and tetrahydroquinoline ligands is reported. The luminescence intensities and lifetimes of these compounds were also studied in poly(styrene) films with respect to their responses to oxygen and temperature. Particularly, due to the insensitivity to oxygen quenching, these complexes are promising candidates as inert reference dyes in optical sensors. On the other hand, the Pt(II) complex with 2-(4-bromophenyl)-5,6,7,8-tetrahydroquinoline as C^N ligand, displays a strong temperature quenching effect. The distinct response to temperature was additionally calibrated after incorporation in poly(vinylidene chloride-co-acrylonitrile) serving as oxygen-blocking matrix copolymer. The resulting yellow-green-emitting temperature sensor signifies an interesting alternative to the available mostly red emitting temperature-sensitive probes.
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