Abstract

The mesoporous silica nanoparticles (MSN) was modified by salicylaldimine, furfuralimine, and benzaldehyde imine, respectively, denoted as Sal-MSN, Fur-MSN, and Ben-MSN for methyl eugenol (Me) delivery by one-step method. The results confirmed that Me was successfully adsorbed by Schiff base mesoporous silica, which maintained regular hexagonal pore structure. Me is distributed in amorphous state in the pores of the mesoporous silica indicated by differential scanning calorimeter (DSC) curves. Schiff base modification strengthened the interaction between Me and mesoporous silica, leading to its higher sustained-release performance and the disappearance of sudden release in sustained-release performance comparing with Me-MSN before Schiff base modification. Me and Me-MSN were most consistent with the First-order kinetic and logistic equation, respectively. After Schiff base modification, Me-Sal-MSN, Me-Fur-MSN, and Me-Ben-MSN were most consistent with Korsmeryer–Peppas kinetic equation. Therefore, the difference of Me concentration was no longer the main control factor of sustained-release system after Schiff base modification. In the attraction of Bactrocera dorsalis test, the lure efficiency for per unit Me for Me-MSN, Me-Sal-MSN, Me-Fur-MSN, and Me-Ben-MSN equal to 2.83, 3.31, 3.32, 4.24 times of pure Me. After Schiff base modification, the samples showed higher lure efficiency due to their ideal sustained-release performance without sudden release. In short, the lure efficiency of Me was improved by the Schiff base mesoporous silica sustained-release system, in the meanwhile its service life was also prolonged.

中文翻译：

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一步法合成甲基丁香酚/席夫碱中孔二氧化硅纳米粒子具有高诱饵缓释性能

抽象的

介孔二氧化硅纳米粒子（MSN）分别被水杨醛亚胺，糠醛亚胺和苯甲醛亚胺修饰，分别表示为Sal-MSN，Fur-MSN和Ben-MSN，用于一步法制得甲基丁香酚（Me）。结果证实Me被席夫碱中孔二氧化硅成功吸附，并保持规则的六边形孔结构。Me以差示扫描量热仪（DSC）曲线指示以无定形状态分布在介孔二氧化硅的孔中。与席夫碱改性前的Me-MSN相比，席夫碱改性增强了Me与中孔二氧化硅之间的相互作用，导致其更高的缓释性能以及缓释性能中突然释放的消失。Me和Me-MSN与一阶动力学和逻辑方程最一致，分别。经过Schiff碱修饰后，Me-Sal-MSN，Me-Fur-MSN和Me-Ben-MSN与Korsmeryer-Peppas动力学方程最一致。因此，席夫碱修饰后，Me浓度的差异不再是缓释系统的主要控制因素。在吸引Bactrocera dorsalis测试，Me-MSN，Me-Sal-MSN，Me-Fur-MSN和Me-Ben-MSN的每单位Me的诱惑效率等于纯Me的2.83、3.31、3.32、4.24倍。席夫碱改性后，由于其理想的持续释放性能而没有突然释放，因此样品显示出更高的诱饵效率。简而言之，席夫碱中孔二氧化硅缓释体系提高了Me的诱饵效率，同时延长了其使用寿命。