Hydrosilylation for the synthesis of sequence-controlled periodic copolymers
Journal
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
Journal Volume
69
Journal Issue
8
Pages
1223
Date Issued
2022
Author(s)
Cheng, YJ
Abstract
Transition metal-catalyzed addition of bis-silyl hydride to bis-alkyne is widely used for the synthesis of alt-silylene-divinyl-linker copolymer. When the linker for connecting two silyl hydrides is different from that for two alkyne motifs, hydrosilylation reaction will give the corresponding AB-type copolymer. The reactivity of alkynes can be manipulated by using different protective groups. This kind of strategy would enable us to assemble a range of linkers in regioregular manner or sequence-controlled tactic. In this account, we summarize our synthetic endeavors on the use of rhodium-catalyzed hydrosilylation reaction to incorporate different kinds and/or numbers of chromophores arranged regioselectively on the polymeric backbone. The photophysical properties such as those arising from the ground state interactions, fluorescence resonance energy transfer, photoinduced electron transfer, light-harvesting, or a combination thereof have been systematically examined. These data may offer useful clues on the folding behavior of these silicon-containing polymers.
Subjects
fluorescece resonance energy transfer; hydrosilylation; light harvesting; photoinduced electron transfer; sequence controlled polyerizatoin; Thorpe-Ingold effect; PHOTOINDUCED ELECTRON-TRANSFER; DONOR-ACCEPTOR COPOLYMERS; ALTERNATING DONOR; ENERGY-TRANSFER; FUNCTIONAL POLYMERS; THORPE; LADDERPHANES; CATALYSIS
Publisher
WILEY-V C H VERLAG GMBH
Type
review