A set of 27- to 39-membered pyridine macrocycles 2 and 3 has been synthesized by Williamson ethersynthesis or ring-closingmetathesis. The pyridines are 2,6-disubstituted to allow endo interactions. In addition to the length, also the nature of the aliphatic chain was varied: saturated (2) and unsaturated (3).
Repeating guest units of polyesters poly‐(R)‐2 were selectively encapsulated by capsule 1(BF4)4 to produce supramolecular graft polymers. The encapsulation of the guest units was confirmed by 1H NMR spectroscopy. The graft polymer structures were confirmed by the increase in the hydrodynamic radii and the solution viscosities of the polyesters upon complexation of the capsule. After the capsule was formed
Surface-Initiated Ring-Opening Metathesis Polymerization (SI-ROMP): Synthesis and Electropolymerization of Terthiophene-Functionalized Olefin Peripheral Dendrons
作者:Guoqian Jiang、Ramakrishna Ponnapati、Roderick Pernites、Mary Jane Felipe、Rigoberto Advincula
DOI:10.1021/ma101746e
日期:2010.12.28
We report on the synthesis and electrodeposition of peripheral olefin dendrons with electropolymerizable focal point terthiophene units. These films were utilized for surface initiated ring-openingmetathesispolymerization (SI-ROMP) of norbornene to form grafted polynorbornene brushes. The dendrons were first electrodeposited on an electrode surface, forming a highly dense and uniform polythiophene-type