Luminescent cyclometalated platinum compounds with N, P, and O^O ligands: Density‐functional theory studies and analysis of the anticancer potential
作者:Jorge Leal、Gema Durá、Félix A. Jalón、Elisenda Zafon、Anna Massaguer、José Vicente Cuevas、Lucia Santos、Ana M. Rodríguez、Blanca R. Manzano
DOI:10.1002/aoc.6983
日期:2023.3
different in nature to those of 1–4. Time-dependent DFT (TD-DFT) calculations showed that for 1–4 the excited states S1 and T1 reflect metal-to-ligand charge transfer (MLCT) and ligand-centered (LC) (C^N) contributions while for 5–6 these states are an LC transition centered on L1 or L2. The speciation in DMSO and DMSO/H2O was evaluated. Biological studies showed that [Pt(thpy)Cl(Hthpy)], 1, [Pt(dfppy)Cl(Hdfppy)]
发光的铂环金属化配合物之所以受到关注,主要是因为它们在光电和生物领域的应用,尤其是在抗癌活性方面。鉴于这种兴趣水平,一系列环金属化(2-[2'-噻吩基]吡啶酸盐,thpy 和 2-[2,4-二氟苯基] 吡啶酸盐,dfppy)铂络合物与 N-供体,PTA(1,3,5 -triaza-7-phosphaadamantane) 或白杨素衍生的配体(掺入哌啶HL1或吗啉HL2片段)被合成。复合物是发光的,发射波长可调。[Pt(dfppy)L1], 5在溶液中观察到聚集. 密度泛函理论 (DFT) 研究描述了最高占据分子轨道 (HOMO) 和最少未占据分子轨道 (LUMO) 特征及其对光物理性质的影响。5 – 6的轨道在性质上与1 – 4的轨道不同。时间相关 DFT (TD-DFT) 计算表明,对于1 – 4,激发态 S 1和 T 1反映了金属到配体电荷转移 (MLCT) 和以配体为中心 (LC) (C^N)