Ir(III) Cyclometalated Complexes Containing Phenylphenanthridine Ligands with Different Substitutions: Effects on the Electrochemiluminescence Properties
作者:Elena Longhi、Jesus M. Fernandez-Hernandez、Adriana Iordache、Roland Fröhlich、Hans-Peter Josel、Luisa De Cola
DOI:10.1021/acs.inorgchem.0c00107
日期:2020.6.1
A family of neutral bis-cyclometalated Ir(III) complexes based on phenanthridine (phent) derivates as cyclometalating ligands and picolinate as an ancillary ligand are described. The influence of extended conjugation, rigidity, and hydrophobicity as well as the electronic nature of the substituents were investigated in relation to the photoluminescence, PL, and electrochemiluminescence, ECL, properties
描述了基于菲啶(phent)衍生物作为环金属化配体和吡啶甲酸作为辅助配体的中性双环金属化Ir(III)配合物家族。研究了扩展共轭,刚性和疏水性以及取代基的电子性质与光致发光(PL)和电化学致发光(ECL)性质之间的关系。在化合物2和3中,通过扩展芳族体系或用二苯并呋喃部分取代苯基,可以观察到水性介质中ECL的显着增加。, 分别。在实际的免疫测定条件下,这些复合物的ECL效率是商业钌标准品的4倍。这些值是这些条件下文献中报道的最高值,证实了铱配合物在商业仪器中作为替代标记的潜力。