Efficient synthesis of small-sized phosphonated dendrons: potential organic coatings of iron oxide nanoparticles
作者:Antonio Garofalo、Audrey Parat、Catalina Bordeianu、Cynthia Ghobril、Marie Kueny-Stotz、Aurélie Walter、Julien Jouhannaud、Sylvie Begin-Colin、Delphine Felder-Flesch
DOI:10.1039/c4nj00654b
日期:——
We report herein the synthesis of biocompatible small-sized phosphonated monomers and dendrons used as functional coatings of metal oxide nanoparticles, more specifically superparamagnetic iron oxides (SPIOs) for magnetic resonance imaging (MRI) and therapy through hyperthermia. The molecules were engineered to modulate their size, their hydrophilic and/or biocompatible character (poly(amido)amine versus oligoethyleneglycol), the number of anchoring phosphonate groups (monophosphonate versus phosphonic tweezers) and the number of peripheral functional groups for further grafting of dyes or specific vectors. Such a library of hydrophilic phosphonic acids opens new possibilities for the investigation of dendronized nanohybrids as theranostics.
我们在此报道了一种生物相容性的、尺寸较小的膦酸化单体和树枝状大分子的合成,这些物质作为金属氧化物纳米颗粒的功能性涂层,更具体地说是用于磁共振成像(MRI)和通过高温治疗的铁磁性氧化物(SPIOs)。这些分子被设计用来调节它们的大小、亲水性和/或生物相容性特征(聚酰胺胺vs.寡聚乙二醇)、锚定的膦酸基团的数量(单膦酸vs.膦酸钳)以及外围功能性基团的数量,以便进一步接枝染料或特定的载体。这样一个亲水性膦酸库为研究作为治疗诊断一体化的树枝状纳米杂化物开辟了新的可能性。