In this paper, the Au nanoparticles and rare-earth （RE） upconversion nanoparticles （NPs） were respectively synthesized by using polyelectrolyte as the capping agents. Since the synthesized Au NPs and RE NPs had th...In this paper, the Au nanoparticles and rare-earth （RE） upconversion nanoparticles （NPs） were respectively synthesized by using polyelectrolyte as the capping agents. Since the synthesized Au NPs and RE NPs had the similar size and surface conditions, Their mixture were employed in a pH sensing application. Benefited from the good spectral overlap between the RE upconversion emission bands and pH-tunable surface plasmon bands of the Au NPs, the pH-induced manipulation of green-to-red emission intensity ratio of the upconversion fluorescence was achieved in the Au-RE mixture. The results demonstrate a rapid ratiometric approach for pH sensing, which is more efficient than traditional sensing methods that depend on single intensity-based responses to analytes.展开更多
O433.5 98063548飞秒脉冲激发的动力学光谱理论.I.吸收和发射过程的微观动力学=Spectral theory of Fs pulse excitateddynamics.I.microdynamics of absorbingand emitting process[刊,中]/陆靖,范康年(中科院上海光机所.上海(200433)...O433.5 98063548飞秒脉冲激发的动力学光谱理论.I.吸收和发射过程的微观动力学=Spectral theory of Fs pulse excitateddynamics.I.microdynamics of absorbingand emitting process[刊,中]/陆靖,范康年(中科院上海光机所.上海(200433))//中国科学(A辑).—展开更多
基金Supported by grants from the Natural Science Foundation of Jiangsu Province(SBK201240182)the Natural Science Foundation of China(J1210061)
文摘In this paper, the Au nanoparticles and rare-earth （RE） upconversion nanoparticles （NPs） were respectively synthesized by using polyelectrolyte as the capping agents. Since the synthesized Au NPs and RE NPs had the similar size and surface conditions, Their mixture were employed in a pH sensing application. Benefited from the good spectral overlap between the RE upconversion emission bands and pH-tunable surface plasmon bands of the Au NPs, the pH-induced manipulation of green-to-red emission intensity ratio of the upconversion fluorescence was achieved in the Au-RE mixture. The results demonstrate a rapid ratiometric approach for pH sensing, which is more efficient than traditional sensing methods that depend on single intensity-based responses to analytes.
文摘O433.5 98063548飞秒脉冲激发的动力学光谱理论.I.吸收和发射过程的微观动力学=Spectral theory of Fs pulse excitateddynamics.I.microdynamics of absorbingand emitting process[刊,中]/陆靖,范康年(中科院上海光机所.上海(200433))//中国科学(A辑).—
