Silica nanoparticles doped with multiple dyes featuring highly efficient energy transfer and tunable Stokes-shift
申请人:Bonacchi Sara
公开号:US09616141B2
公开(公告)日:2017-04-11
The present invention relates to silica nanoparticles comprising at least two dyes. Said dyes have a respective relationship of donor-acceptor couple in an energy transfer process and have a molar absorption coefficient ≧10,000 M−1 cm−1 for the considered spectral region, a fluorescence quantum yield ≧0.01, good overlap integral, according to the Förster theory, between said donor and said acceptor dye; said active compounds may be lipophilic or may present a functionality useful for the introduction of a trialkoxysilane moiety. The dyes provide an efficient energy transfer process. Said nanoparticles are useful as probes in the field of medicine, in particular therapy and diagnostics, more particularly in theranostics, and in the field of analytical chemistry.
本发明涉及包含至少两种染料的二氧化硅纳米颗粒。所述染料在能量转移过程中具有供体-受体偶联的关系,并且在考虑的光谱区域内具有摩尔吸收系数≧10,000 M−1 cm−1,荧光量子产率≧0.01,根据Förster理论,在所述供体染料和受体染料之间具有良好的重叠积分;所述活性化合物可能是亲脂性的,或者可能具有有利于引入三烷氧基硅烷基的功能基团。这些染料提供了高效的能量转移过程。所述纳米颗粒在医学领域中作为探针是有用的,特别是在治疗和诊断方面,更具体地在治疗诊断联合领域,以及在分析化学领域。