Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, People's Republic of China.
J Am Chem Soc. 2021 Jan 20;143(2):973-982. doi: 10.1021/jacs.0c11162. Epub 2021 Jan 6.
A cationic water-soluble dipicolylamine (DPA)-containing alkynylplatinum(II) terpyridine complex has been synthesized and employed as a dual-selective probe for the detection of cations and anions. The complex was shown to exhibit a strong binding affinity toward Zn, whereas the zinc-bound adduct was found to demonstrate the capability of recognizing pyrophosphate (PPi). As evidenced by molecular modeling and various spectroscopic and spectrometric studies, including HR-ESI mass spectrometry, NMR spectroscopy, PXRD measurements, and UV-vis absorption and emission spectroscopy, a PPi anion was found to be capable of bridging two zinc-bound complex molecules in a clip-shaped fashion, which was further oligomerized through intermolecular Pt···Pt and π-π stacking interactions to form nanofibers with a hexagonal columnar phase. This work provides important insights into not only the construction of aesthetically pleasing supramolecular architectures but also the multifunctional probes, which offer great promise to the fields of biosensing and chemical sensing.
一种含有阳离子水溶性二吡啶胺（DPA）的炔基铂（II）三联吡啶配合物已被合成，并被用作同时检测阳离子和阴离子的双重选择性探针。该配合物对 Zn 具有很强的结合亲和力，而锌结合加合物则被发现具有识别焦磷酸根（PPi）的能力。分子模拟和各种光谱和光谱研究，包括高分辨率-ESI 质谱、NMR 光谱、PXRD 测量、紫外-可见吸收和发射光谱表明，PPi 阴离子能够以夹形方式桥连两个锌结合的配合物分子，进一步通过分子间的 Pt···Pt 和 π-π 堆积相互作用形成具有六方柱状相的纳米纤维。这项工作不仅为构建美观的超分子结构提供了重要的见解，也为多功能探针提供了重要的见解，这些探针为生物传感和化学传感领域带来了巨大的希望。
