Bäumer Nils, Kartha Kalathil K, Buss Stefan, Palakkal Jasnamol P, Strassert Cristian A, Fernández Gustavo
Organisch Chemisches Institut, Universität Münster Corrensstraße 36 48149 Münster Germany
Institut für Anorganische und Analytische Chemie, CiMIC, SoN, Westfälische Wilhelms-Universität Münster Corrensstraße 28/30 48149 Münster Germany.
Org Chem Front. 2021 Jun 4;8(15):4138-4143. doi: 10.1039/d1qo00644d. eCollection 2021 Jul 27.
Achieving precise control over the morphology, dimensions and processability of functional materials is a key but challenging requirement for the fabrication of smart devices. To address this issue, we herein compare the self-assembly behavior of two new Pt(ii) complexes that differ in the molecular and coordination geometry through implementation of either a monodentate (pyridine) or bidentate (bipyridine) ligand. The molecular preorganization of the bipyridine-based complex enables effective self-assembly in solution involving Pt⋯Pt interactions, while preserving aggregate solubility. On the other hand, increased steric effects of the linear bispyridine-based complex hinder an effective preorganization leading to poorly solvated aggregates when a critical concentration is exceeded.
对功能材料的形态、尺寸和可加工性实现精确控制是制造智能设备的一项关键但具有挑战性的要求。为了解决这个问题，我们在此通过使用单齿（吡啶）或双齿（联吡啶）配体，比较了两种在分子和配位几何结构上不同的新型Pt(ii)配合物的自组装行为。基于联吡啶的配合物的分子预组织能够在溶液中实现涉及Pt⋯Pt相互作用的有效自组装，同时保持聚集体的溶解性。另一方面，基于线性双吡啶的配合物的空间效应增加，阻碍了有效的预组织，当超过临界浓度时会导致溶剂化不良的聚集体。
