Oligoaniline-Functionalized terpyridine ligands and their ruthenium(II) complexes: synthesis, spectroscopic property and redox behavior
作者:Dongfang Qiu、Yanxiang Cheng、Lixiang Wang
DOI:10.1039/b820392j
日期:——
fragments of ligands strongly shift to lower energy, and the metal-to-ligand charge-transfer transition (1MLCT) bands of all obtained complexes are considerably red-shifted (Δλmax = 22–64 nm) and their intensities become much more intense (approximately 4–6 times), compared with those of the reported complex [Ru(TPY)2]2+. Moreover, the spectroscopic properties of the ligands and complexes with longer
一系列低聚苯胺官能化的单和双主题 特吡啶配体,即C 6 H 5 [N(R)C 6 H 4 ] n TPY(R =H, 丁基, 叔丁氧羰基; n = 1-4;TPY = 2,2':6′,2″-三吡啶基)和TPYC 6 H 4 [N(R)C 6 H 4 ] m TPY(R =H, 叔丁氧羰基; m = 2,4),以及相应的单核和双核钌(II)配合物已经合成和验证。光谱结果表明,两种π-π*跃迁从TPY和配体的低聚苯胺片段强烈转移到较低能量,并且金属到配体的电荷转移过渡(1所有获得的络合物的MLCT)频带相当红移(Δ λ最大= 22-64纳米),它们的强度变得与报道的复合物相比,强度要高得多(大约4至6倍)[Ru(TPY)2 ] 2+。此外,更长的寡苯胺单元(n = 3,4)的配体和配合物的光谱性质受到外部刺激的显着影响,例如氧化作用 和 质子酸掺杂。可见光和近红外(NIR)标度中的特征吸收带证