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首页> 外文期刊>Crystal growth & design >Impact of Substrate Properties on the Formation of Spherulitic Films: A Case Study of Salbutamol Sulfate
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Impact of Substrate Properties on the Formation of Spherulitic Films: A Case Study of Salbutamol Sulfate

机译:基材性质对球晶形成的影响:以硫酸沙丁胺醇为例

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摘要

Spherulitic assemblies have applications as carriers for drug delivery and as targeting vectors. Presently, the driving force behind the formation of spherulites comprising small drug molecules is not fully understood. Herein, the impact of different substrate types on spherulitic crystallization of salbutamol sulfate (SS) was investigated. Freshly cleaved mica, silicon (111) wafer (SiW), uncoated borosilicate glass (UG), silane coated glass (CG), and stainless steel (MS) were used as substrates. It was demonstrated that the spherulite growth can be controlled via the substrate selection. Spherulite formation was inhibited on hydrophilic substrates, such as mica, possibly due to stronger intermolecular interactions between SS and the substrate than SS-SS interactions. Contact angle measurements established that mica possessed the lowest contact angle (15.1 +/- 0.5 degrees), and the values of this parameter increased in the order of UC < SiW < CG < MS. Substrate roughness also played a key role in controlling spherulite formation. SiW, UC, and CG had isotropic surfaces with low average roughness, facilitating spherulite formation. Overall, this work demonstrates that it is possible to successfully produce SS spherulites using a single step process at room temperature. Furthermore, the formation of SS spherulites can be tuned by the hydrophobicity of the substrate, an approach that could be applied to assembling spherulites of other small organic molecules.
机译:球形组装体可用作药物递送的载体和靶向载体。目前,尚未完全理解形成包含小药物分子的球晶背后的驱动力。在此,研究了不同种类的基质对硫酸沙丁胺醇(SS)球晶结晶的影响。将新鲜裂解的云母,硅(111)晶圆(SiW),未涂覆的硼硅酸盐玻璃(UG),硅烷涂覆的玻璃(CG)和不锈钢(MS)用作基材。结果表明,可以通过选择底物来控制球晶的生长。在亲水性基质(如云母)上,球晶的形成受到抑制,这可能是由于SS和基质之间的分子间相互作用比SS-SS相互作用更强。接触角测量确定云母具有最低的接触角(15.1 +/- 0.5度),并且该参数的值按UC

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