New alkynyl- and vinyl-linked benzo- and aza-crown etherbipyridyl ruthenium(II) complexes which spectrochemically recognize Group IA and IIA metal cations
作者:Paul D. Beer、Oldrich Kocian、Roger J. Mortimer、Christopher Ridgway
DOI:10.1039/dt9930002629
日期:——
A new alkynyl-linked bis(benzo-15-crown-5) bipyridyl ligand and new mono- and bis-benzo-15-crown-5 and aza-15-crown-5 bipyridyl ligands containing trans-conjugated olefinic linkages between the crown ethers and the 4,4′-disubstituted 2,2′-bipyridine (bipy) moieties have been synthesised. The corresponding [RuL(bipy)2][PF6]2 and [RuL3][PF6]2 complexes have been prepared and the latter electropolymerized
一种新的炔基联双(苯并-15-冠-5)联吡啶配体和新的单-和双-苯并-15-冠-5和含氮杂-15-冠-5联吡啶配体的反式-缀合的冠部之间的联系烯烃醚和4,4'-二取代的2,2'-联吡啶(联吡啶)部分已经合成。相应的[RuL(bipy)2 ] [PF 6 ] 2和[RuL 3 ] [PF 6 ] 2制备了配合物,并将后者电聚合到光学透明的导电玻璃电极上。电子吸收和荧光发射光谱测量表明,新型的官能化冠醚既可以作为溶液配合物,也可以作为聚合物膜,对IA和IIA类金属阳离子进行光谱化学识别。的λ最大值和Iμ值二者的基于配体的低能量π-π*跃迁以及用于复合物中观察到的金属到配体的电荷传输带对的钠和镁阳离子的结合敏感。光谱测量结果进一步证明了电聚合膜中残留不饱和键的存在,提供了一种可用于探测这种电聚合机理和效率的技术。