利用自分類過程建構金屬超分子剛-柔嵌段共聚物之研究

Construction of Metallo-Supramolecular Rod-Coil Block Copolymers via a Self-Sorting Process

何昀芮(Yun-Jui He)

指導教授 ： 詹益慈

國立臺灣大學/理學院/化學研究所/碩士(2015年)

https://doi.org/10.6342/NTU.2015.10923

摘要

自分類可以被定義為分子或離子間高度辨識及有選擇性的過程。許多自分類系統可以透過氫鍵、金屬與配體間的交互作用、疏溶劑作用以及可逆共價鍵來建構。近幾年來，藉由金屬-配體驅動之自分類系統已經引起極大的關注，一些用來增加其自分類度的方法已經被發展出來，如控制配位體的幾何形狀，以及金屬的配位數。因此，我們想利用在2,2′:6′,2〃三聯口比口定上修飾官能基，配合適當的金屬離子，利用增加配體的立體障礙及電子誘導效應來增加其自分類度。

關鍵字

三聯口比口定 ； 自分類

並列摘要

Self-sorting can be defined as high fidelity recognition between molecules or ions within complex mixtures. Many self-sorting systems have been established by using hydrogen bonds, metal-ligand interactions, solvophobic effects, and reversible covalent bonds. In recent years, the metal-ligand coordination-driven self-sorting has attracted tremendous attention. Several strategies have been developed to increase the degree of self-sorting, for example, by controlling ligand geometry and metal coordination number.
Here, we would like to achieve self-sorting of complexation of functionalized 2,2′:6′,2〃-terpyridine ligands with suitable metal ions and to increase the degree of self-sorting by enhancing steric hindrance and inductive effects of the ligands. Electrospray ionization mass spectrometry (ESI-MS) was utilized to identify intact assemblies and to compare the relative stability of hetero-terpyridine complexes. Construction of metallo-supramolecular rod-coil and rod-coil-rod block copolymers was used as a demonstration of this powerful self-sorting process. The resultant block copolymers were well characterized by 1H NMR, DOSY NMR, AFM, and TEM. It was found that the self-assembled morphology could be controlled by adjusting their hydrophilic/hydrophobic ratio.

並列關鍵字

self-sorting ； terpyridine ； supramolecular copolymer

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