从无序到有序：由四齿三联吡啶 - 卟啉构象异构体混合物自组装纳米棱镜
Order from Chaos: Self-Assembly of Nanoprism from a Mixture of Tetratopic Terpyridine-Porphyrin Conformers.
作者信息
Filosa Alexander, Wang Heng, Li Wei-Jian, Zhang Wenjing, Ngo Ellie, Piccolo Jonathan E, Yang Hai-Bo, Li Xiaopeng
机构信息
Deportment of Chemistry, University of South Florida, 4202 Fowler Avenue, Tampa, Florida 33620, United States.
Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai 200062, China.
出版信息
Chin J Chem. 2019 Nov;37(11):1167-1173. doi: 10.1002/cjoc.201900177. Epub 2019 Aug 30.
Abstract
Porphyrins have been widely used in the self-assembly of metallo-supramolecules. In this study, we introduced 2,2':6,2"-terpyridine (tpy) into a porphyrin core to synthesize a tetratopic building block with multiple conformers. During the self-assembly with Zn(II), such a mixture of conformers was able to form a discrete nanoprism with all building blocks in one conformation. Detailed characterizations, including NMR, ESI-MS and traveling-wave ion mobility-mass spectrometry (TWIM-MS), all supported the formation of the desired assemblies. AFM and TEM further confirmed the dimensions of assembled nanoprisms. Moreover, the photophysical properties of the ligands and complexes were noticeably different depending upon size and metal ion center.
摘要
卟啉已广泛应用于金属超分子的自组装。在本研究中，我们将2,2':6,2"-三联吡啶（tpy）引入卟啉核心，以合成具有多种构象异构体的四齿构筑单元。在与锌（II）进行自组装过程中，这种构象异构体混合物能够形成一种离散的纳米棱柱，所有构筑单元均处于一种构象。包括核磁共振（NMR）、电喷雾电离质谱（ESI-MS）和行波离子淌度质谱（TWIM-MS）在内的详细表征均支持了所需组装体的形成。原子力显微镜（AFM）和透射电子显微镜（TEM）进一步证实了组装纳米棱柱的尺寸。此外，配体和配合物的光物理性质因尺寸和金属离子中心的不同而存在显著差异。
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