PHOTOCATALYTIC REDUCTION OF PHENACYL HALIDES BY 9,10-DIHYDRO-10-METHYLACRIDINE - CONTROL BETWEEN THE REDUCTIVE AND OXIDATIVE QUENCHING PATHWAYS OF TRIS(BIPYRIDINE)RUTHENIUM COMPLEX UTILIZING AN ACID CATALYSIS
PHOTOCATALYTIC REDUCTION OF PHENACYL HALIDES BY 9,10-DIHYDRO-10-METHYLACRIDINE - CONTROL BETWEEN THE REDUCTIVE AND OXIDATIVE QUENCHING PATHWAYS OF TRIS(BIPYRIDINE)RUTHENIUM COMPLEX UTILIZING AN ACID CATALYSIS
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DOI：
10.1021/j100365a039
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发表时间：
1990-01-25
影响因子：
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通讯作者：
TANAKA, T
中科院分区：
文献类型：
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作者：
FUKUZUMI, S;MOCHIZUKI, S;TANAKA, T
由于通过电子转移的猝灭已经得到很好的建立，人们经常发现，相同的激发态衬底可以被电子供体和受体猝灭。2，3这里讨论的许多工作涉及通过激发聚（吡啶基）钌（II）络合物（通常为[Ru（bpy）3] 2+（bpy= 2，2 '-联吡啶））引发的反应。1 2 34568激发态[Ru（bpy）3] 2+* 可以被电子供体如胺和芳族醚5、6或电子受体如联吡啶二价阳离子（例如甲基紫精）7和一系列硝基芳族化合物有效地淬灭。虽然这些过程可以非常有效地发生，但它们通常伴随着能量浪费的反向电子转移反应，这些反应通常也更有效地发生，使得经常的结果是没有净化学反应。2，3当[Ru（bpy）3] 2+* 被电子给体Dred还原猝灭（等式1）后，可以实现不可逆还原时的净化学反应
As quenching via electron transfer has becomewell established, it has been frequently found that the same excited-state substrate can be quenched by electron donors and acceptors. 2, 3 A number of works discussed here involve reactions initiated by excitation of poly (pyridyl) ruthenium (II) complexes, typically,[Ru (bpy) 3] 2+(bpy= 2, 2'-bipyridine). 1 2 34568 The excited state,[Ru (bpy) 3] 2+*, can be efficiently quenched by electron donors such as amines and aromatic ethers5, 6 or electron acceptors such as bipyridyl dications (eg, methylviologen) 7 and a series of nitro aromatics. 8* While these processes can occur very efficiently, they are generally followed by energy-wasting back-electron-transfer reactions that also usually occur more efficiently such that the frequent result is no net chemical reactions. 2, 3 Net chemical reactions can be achieved when the reductive quenching of [Ru (bpy) 3] 2+* by electron donors Dred (eq 1) is followed by the irreversible reduction