Synthesis of hybrid dendritic molecules with diazaphospholidine oxide grafted at the surface of octavinylsilsesquioxane (OVS)
作者:Ge Cheng、Alexandra M. Z. Slawin、Nicolas R. Vautravers、Pascal André、Russell E. Morris、Ifor D. W. Samuel、David Cole-Hamilton
DOI:10.1039/c0ob00297f
日期:——
phosphine oxide ligand, which was derivatised with a series of functional groups including bromide, vinyl, allyl and terminal alkyne. Several methods to attach the resulting precursors onto octavinylsilsesquioxane (OVS), ranging from hydrosilylation, Suzuki, Heck, Grubbs or Sonogashira coupling reactions, have been investigated. Cross-metathesis of SEMI-ESPHOS oxide dendrons containing vinyl end groups
A new convergent synthetic route for the synthesis of functionalized photoactive dendrimers having bis-stilbenoid skeletons on planar and tetrahedral cores, endowed with methoxy/methyl group has been developed. Optical spectroscopic techniques have been used to study absorption and emission properties and isomerization behavior of the stilbene dendrimers.
Novel photo-cross-linkable dendrimers having thermal de-cross-linking properties
作者:Haruyuki Okamura、Masamitsu Shirai
DOI:10.1016/j.polymer.2010.09.010
日期:2010.10
Novel poly(aryl ether) type dendrimers having photo-cross-linking and thermal de-cross-linking properties were synthesized by a convergent method. A protected A2B monomer, 1-allyloxy-3,5-bis(bromomethyl)benzene, was newly prepared for the dendrimersynthesis. Palladium-catalyzed deprotection of an allyl group proceeded in high yields. The films of dendrimers containing a photoacid generator (PAG) became
A polymer electrolyte being configured to provide ion transport, said polymer electrolyte comprising: a main-chain first repeating unit configured to provide a primary ion coordinating site, a plurality of main-chain repeating units being arranged as a substantially helical ion coordinating channel; said polymer electrolyte further comprising and being characterised by: a main-chain second repeating unit being interdispersed between said main-chain first repeating unit, said second repeating unit being configured to provide a secondary ion coordinating site within said coordinating channel, said secondary ion coordinating site being less coordinating then said primary ion coordinating site; wherein said polymer electrolyte is configured to provide ion transport within said coordinating channel involving ion transport between said primary ion coordinating site and said secondary ion coordinating site.