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Hollow Mesoporous Silica Nanoparticles with Tunable Structures for Controlled Drug Delivery
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2017-01-09 00:00:00 , DOI: 10.1021/acsami.6b13876
Yanhua Li 1 , Na Li 1 , Wei Pan 1 , Zhengze Yu 1 , Limin Yang 1 , Bo Tang 1
Affiliation  

A size-controllable and facile synthetic strategy has been developed to fabricate a series of hollow mesoporous silica nanoparticles (HMSNs) with tunable hollow cores or shell thicknesses by employing gold nanoparticles (Au NPs) and cetyltrimethylammonium bromide (CTAB) as dual templates. Various sizes of Au NPs and different amounts of tetraethyl orthosilicate contributed to structure-tailored mesoporous silica-coated Au NPs. After calcination, CTAB molecules were completely removed, and Au NPs could still support the silica shell due to the high melting point. HMSNs were ultimately obtained by etching Au NPs. Applications of HMSNs as nanocarriers for delivering drugs were investigated. Significantly, it was flexible and convenient to control drug-loading/releasing behavior of HMSNs just by tuning the hollow cores or shell thicknesses. Intracellular experiments have proven that HMSNs are suitable for delivering drugs. We anticipate that this study could provide an important avenue for the synthesis of HMSNs and further contribute to advancing practical applications of HMSNs in drug delivery systems.

中文翻译:

具有可调结构的中孔二氧化硅空心纳米颗粒,用于药物控制。

通过使用金纳米颗粒(Au NP)和十六烷基三甲基溴化铵(CTAB)作为双模板,已经开发了一种尺寸可控且易于合成的策略,以制造一系列具有可调中空核或壳厚度的中空介孔二氧化硅纳米颗粒(HMSN)。各种尺寸的Au NPs和不同量的原硅酸四乙酯有助于形成结构适合的介孔二氧化硅涂层Au NPs。煅烧后,CTAB分子被完全除去,由于高熔点,Au NP仍然可以支撑二氧化硅壳。最终通过蚀刻金纳米颗粒获得HMSN。研究了HMSN作为纳米载体在药物递送中的应用。重要的是,仅通过调整中空核或壳的厚度来控制HMSN的载药/释放行为是灵活且方便的。细胞内实验已证明HMSN适合用于递送药物。我们希望这项研究可以为合成HMSNs提供重要的途径,并进一步促进在药物递送系统中HMSNs的实际应用。
更新日期:2017-01-09
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