Through a controllable“reactivate””graft”synthetic route,two asymmetrical“Janus”dendronized polymers(DPs)were successfully synthesized.Dendrons were grafted to a linear polymer motherboard by a story-by-story co...Through a controllable“reactivate””graft”synthetic route,two asymmetrical“Janus”dendronized polymers(DPs)were successfully synthesized.Dendrons were grafted to a linear polymer motherboard by a story-by-story constructionmethod.Due to the heterogenetic“Janus”structure,with orderly arranged chromophore moieties,the polymers demonstrated extremely large second-order nonlinear optical(NLO)coefficients and excellent NLO thermal stability.DP-4l and DP-6l had high d33 values of 232 and 227 pm/V,respectively,which reached the highest value reported so far for linear-based polymers containing simple azo-chromophore moieties.The controllable synthesis sheds light on the structure–property relationships of NLO polymers and other dendronized-structure functional polymers.展开更多
基金This research was made possible as a result of a generous grant from NSFC Foundation(Grant Number 21734007).
文摘Through a controllable“reactivate””graft”synthetic route,two asymmetrical“Janus”dendronized polymers(DPs)were successfully synthesized.Dendrons were grafted to a linear polymer motherboard by a story-by-story constructionmethod.Due to the heterogenetic“Janus”structure,with orderly arranged chromophore moieties,the polymers demonstrated extremely large second-order nonlinear optical(NLO)coefficients and excellent NLO thermal stability.DP-4l and DP-6l had high d33 values of 232 and 227 pm/V,respectively,which reached the highest value reported so far for linear-based polymers containing simple azo-chromophore moieties.The controllable synthesis sheds light on the structure–property relationships of NLO polymers and other dendronized-structure functional polymers.
