MLCT-dd energy gap in pyridyl-pyrimidine and bis(pyridine) complexes of ruthenium(II)
MLCT-dd energy gap in pyridyl-pyrimidine and bis(pyridine) complexes of ruthenium(II)
复制标题
钌(II)吡啶基-嘧啶和双(吡啶)配合物中的MLCT-dd能隙
DOI：
10.1021/ic00035a016
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发表时间：
1992
影响因子：
4.6
通讯作者：
T. Meyer
中科院分区：
文献类型：
--
作者：
D. Rillema;C. B. Blanton;R. Shaver;D. C. Jackman;M. Boldaji;S. Bundy;L. Worl;T. Meyer
描述了钌（II）的一系列2-（2[素]-吡啶基）嘧啶和双（吡啶）多吡啶配合物的光物理和光化学性质。发射衰减的温度依赖性拟合为方程I/[tau](T) = k[sub 1] + k[sub 2] exp（[-][Delta]E[sub 2]/RT）。k[sub 1]的取值范围从7.1[乘以]10[sup 5]到8.7[乘以]10[sup 6] s[sup[减]1]，k[sub 2]的取值范围从9[乘以]10[sup 6]到3[乘以]10[sup 17] s[sup[减]1]，[Delta]E[sub 2]的取值范围从428到4,776 cm[sup[减]1]。ln k[下标2]vs [δ]E[下标2]的曲线被称为巴克莱-巴特勒曲线，其斜率为2.9[乘以]10[sup [-]3] cm， y截距为5.9。该研究证明了激发态参数对评估钌（II）吡啶配合物的光敏性和/或稳定性的有用性。它还导致了光稳定核心[Ru(bpy)(bpz)][sup 2+]的设计，这可能在分子组装的设计中有价值。
The photophysical and photochemical properties of a series of 2-(2[prime]-pyridyl)pyrimidine and bis(pyridine) polypyridyl complexes of ruthenium(II) are described. The temperature dependences of the emission decay were fit to the equation I/[tau](T) = k[sub 1] + k[sub 2] exp([minus][Delta]E[sub 2]/RT). The values of k[sub 1] ranged from 7.1 [times] 10[sup 5] to 8.7 [times] 10[sup 6] s[sup [minus]1], k[sub 2] ranged from 9 [times] 10[sup 6] to 3 [times] 10[sup 17] s[sup [minus]1], and [Delta]E[sub 2] ranged from 428 to 4,776 cm[sup [minus]1]. A plot of ln k[sub 2] vs [Delta]E[sub 2], known as a Barclay-Butler plot, was linear with a slope of 2.9 [times] 10[sup [minus]3] cm and a y intercept of 5.9. The study demonstrates the usefulness of excited-state parameters for assessing the photolability and/or stability of ruthenium(II) pyridyl complexes. It has also led to the design of the photostable core [Ru(bpy)(bpz)][sup 2+] which may be of value in the design of molecular assemblies.