title: Interplay of olefin metathesis and multiple hydrogen bonding interactions: covalently cross-linked zippers.
abstract: Hydrogen-bonded zippers bearing terminal alkene groups were treated with Grubbs' catalyst, leading to covalently cross-linked zippers without violating H-bonding sequence specificity. The yield of a cross-linked zipper depended on the stability of its H-bonded precursor, with a weakly associating pair giving reasonable yields only at high concentrations while strongly associating pairs showed nearly quantitative yields. The integration of thermodynamic (H-bonding) and kinetic (irreversible C═C bond formation) processes suggests the possibility of developing many different covalent association units for constructing molecular structures based on a self-assembling way.
authors.affiliation: College of Chemistry, Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Analytical & Testing Center of Sichuan University, Sichuan University, Chengdu 610064, China.
authors.forename: Jisen
authors.initials: J
authors.lastname: Zeng
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.forename: Pengchi
authors.initials: P
authors.lastname: Deng
authors.forename: Wen
authors.initials: W
authors.lastname: Feng
authors.forename: Jingjing
authors.initials: J
authors.lastname: Zhou
authors.forename: Yuanyou
authors.initials: Y
authors.lastname: Yang
authors.forename: Lihua
authors.initials: L
authors.lastname: Yuan
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Yamato
authors.forename: Bing
authors.initials: B
authors.lastname: Gong