Abstract
Stepwise energy transfer is ubiquitous in natural photosynthesis,which greatly promotes the widespread use of solar energy.Herein,we constructed a supramolecular light harvesting system based on sequential energy transfer through the hierarchical self-assembly of M,which contains a cyanostilbene core flanked by two ureidopyrimidinone motifs,endowing itself with both aggregation-induced emission behavior and quadruple hydrogen bonding ability.The monomer M can self-assemble into hydrogen bonded polymers and then form supramolecular polymeric nanoparticles in water through a mini-emulsion process.The nanoparticles were further utilized to encapsulate the relay acceptor ESY and the final acceptor NDI to form a two-step FRET system.Tunable fluorescence including a white-light emission was successfully achieved.Our work not only shows a desirable way for the fabrication of efficient two-step light harvest-ing systems,but also shows great potential in tunable photoluminescent nanomaterials.
基金项目
国家自然科学基金(21702020)
analytical testing support from Analysis and Testing Center,NERC Biomass of Changzhou University()
Postgraduate Research & Practice Innovation Program of Jiangsu Province(KYCX22_3012)
维普
万方数据