Lanthanide complex-based luminescent probes/chemosensors have shown great utilities in various biological and environmental assays with time-resolved detection mode to eliminate background noises.In this work,by conju...Lanthanide complex-based luminescent probes/chemosensors have shown great utilities in various biological and environmental assays with time-resolved detection mode to eliminate background noises.In this work,by conjugating di（2-picolyl）amine（DPA）with a tetradentateβ-diketone 1,2-bis[4＇-（1＂,1＂,1＂,2＂,2＂-pentafluoro-3＂,5＂-pentanedion-5＂-yl）benzyl]-4-chlorosulfo-benzene（BPPBCB）,a novel dual-functional ligand that can coordinate to Eu^（3＋）for responding to Cu^（2＋）and S^2 ions in aqueous media,DPA-BPPBCB,has been designed and synthesized.Theβ-diketone moiety of DPA-BPPBCB can form a strongly luminescent complex with Eu^（3＋）.Upon reaction with Cu^（2＋）,accompanied by the formation of heterobimetallic complex Cu^（2＋）-DPA-BPPBCB-Eu^（3＋）,the Eu^（3＋）luminescence was quenched.While in the presence of S^2,owing to the high affinity of S^2 to Cu^（2＋）,stable CuS was formed,which resulted in the release of Cu^（2＋）from Cu^（2＋）-DPA-BPPBCB-Eu^（3＋）,to restore the luminescence of the Eu^（3＋）complex.This unique＂on-off-on＂luminescence response of the Eu3＋complex enabled Cu^（2＋）and S^2 ions in aqueous media to be detected with time-resolved luminescence detection mode.展开更多
The rapid and reliable measurement of hydrogen peroxide（H_2O_2） is imperative for many areas of technology, including pharmaceutical, clinical, food industry and environmental applications. In this work, a novel mul...The rapid and reliable measurement of hydrogen peroxide（H_2O_2） is imperative for many areas of technology, including pharmaceutical, clinical, food industry and environmental applications. In this work, a novel multifunctional complex, [Ru（bpy）_2（luminol-bpy）]（PF_6）_2（bpy： 2,20-bipyridine）, was designed and synthesized by incorporating a Ru（II） complex with a luminal group. In the presence of horseradish peroxidase（HRP）, reaction of [Ru（bpy）_2（luminol-bpy）]_2＋with H_2O_2 can be monitored by three sensing channels including photoluminescence（PL）, chemiluminiscence（CL） and eletrochemiluminiscence（ECL）. The quantitative assays for H_2O_2 in aqueous solutions using [Ru（bpy）_2（Luminalbpy）]（PF_6）_2as a probe were established with PL, ECL and CL signal output modes, respectively.展开更多
基金Financial support from the National Natural Science Foundati of China(No.21477011)
文摘Lanthanide complex-based luminescent probes/chemosensors have shown great utilities in various biological and environmental assays with time-resolved detection mode to eliminate background noises.In this work,by conjugating di（2-picolyl）amine（DPA）with a tetradentateβ-diketone 1,2-bis[4＇-（1＂,1＂,1＂,2＂,2＂-pentafluoro-3＂,5＂-pentanedion-5＂-yl）benzyl]-4-chlorosulfo-benzene（BPPBCB）,a novel dual-functional ligand that can coordinate to Eu^（3＋）for responding to Cu^（2＋）and S^2 ions in aqueous media,DPA-BPPBCB,has been designed and synthesized.Theβ-diketone moiety of DPA-BPPBCB can form a strongly luminescent complex with Eu^（3＋）.Upon reaction with Cu^（2＋）,accompanied by the formation of heterobimetallic complex Cu^（2＋）-DPA-BPPBCB-Eu^（3＋）,the Eu^（3＋）luminescence was quenched.While in the presence of S^2,owing to the high affinity of S^2 to Cu^（2＋）,stable CuS was formed,which resulted in the release of Cu^（2＋）from Cu^（2＋）-DPA-BPPBCB-Eu^（3＋）,to restore the luminescence of the Eu^（3＋）complex.This unique＂on-off-on＂luminescence response of the Eu3＋complex enabled Cu^（2＋）and S^2 ions in aqueous media to be detected with time-resolved luminescence detection mode.
基金supported by the National Natural Science Foundation of China(No.21205009)the Fundamental Research Funds for the Central Universities(No.DUT15ZD116)
文摘The rapid and reliable measurement of hydrogen peroxide（H_2O_2） is imperative for many areas of technology, including pharmaceutical, clinical, food industry and environmental applications. In this work, a novel multifunctional complex, [Ru（bpy）_2（luminol-bpy）]（PF_6）_2（bpy： 2,20-bipyridine）, was designed and synthesized by incorporating a Ru（II） complex with a luminal group. In the presence of horseradish peroxidase（HRP）, reaction of [Ru（bpy）_2（luminol-bpy）]_2＋with H_2O_2 can be monitored by three sensing channels including photoluminescence（PL）, chemiluminiscence（CL） and eletrochemiluminiscence（ECL）. The quantitative assays for H_2O_2 in aqueous solutions using [Ru（bpy）_2（Luminalbpy）]（PF_6）_2as a probe were established with PL, ECL and CL signal output modes, respectively.
