高等学校化学学报 ›› 2016, Vol. 37 ›› Issue (3): 567.doi: 10.7503/cjcu20150589

• 物理化学 • 上一篇    下一篇

羟基喜树碱-类水滑石纳米杂化的共组装制备及表征

庞秀江1, 刘源1, 陈利2, 全贞兰1   

  1. 1. 青岛科技大学化学与分子工程学院, 生态化工国家重点实验室培育基地, 青岛 266042;
    2. 青岛科技大学高分子科学与工程学院, 橡塑材料与工程教育部重点实验室/山东省橡塑材料与工程重点实验室, 青岛 266042
  • 收稿日期:2015-07-27 修回日期:2016-01-13 出版日期:2016-03-10 发布日期:2016-01-13
  • 通讯作者: 庞秀江,女,博士,讲师,主要从事微反应器制备类水滑石纳米片及其应用研究.E-mail:xiujiangpang@qust.edu.cn E-mail:xiujiangpang@qust.edu.cn
  • 基金资助:

    山东省自然科学基金(批准号:ZR2014BL005)和青岛科技大学博士基金(批准号:0022610)资助.

Fabrication of HCPT-Layered Double Hydroxide Nanohybrids via Co-assembly Method and Its Characterization

PANG Xiujiang1, LIU Yuan1, CHEN Li2, QUAN Zhenlan1   

  1. 1. State Key Laboratory Base of Eco-chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China;
    2. Key Laboratory of Rubber-plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
  • Received:2015-07-27 Revised:2016-01-13 Online:2016-03-10 Published:2016-01-13
  • Supported by:

    Supported by the Natural Science Foundation of Shandong Province, China(No.ZR2014BL005) and the Doctoral Fund of Qingdao University of Science and Technology of China(No.0022610).

摘要:

采用共组装法在水溶液中制备羟基喜树碱(HCPT)-层状双金属氢氧化物(LDH)纳米杂化物.先利用微通道反应器通过共沉淀法制备了Zn2Al-NO3 LDH纳米片,然后与羧酸盐型HCPT在水介质中共组装,制备了HCPT插层LDH的纳米杂化物.利用酸处理,可将层间HCPT由非生物活性的羧酸盐型转化为生物活性的内酯型,这对高生物活性HCPT-LDH纳米杂化物的绿色制备具有重要意义.共组装法制备HCPT-LDH纳米杂化物,耗时短、载药量高、分散性好,且利用原料配比可方便地调控载药量. HCPT分子在LDH层间以其长轴倾斜于层板呈双层排列.所制备的HCPT-LDH纳米杂化物具有良好的药物缓释性能,颗粒内部扩散是药物释放过程的控速步骤.药物释放过程可用准二级动力学模型描述.可以用于构筑LDH基药物输送-控释体系.

关键词: 羟基喜树碱, 层状双金属氢氧化物, 共组装, 纳米杂化物

Abstract:

Hydroxyl camptothecin-layered double hydroxides(HCPT-LDH) nanohybrids were prepared by co-assembling between HCPT and Zn2Al-NO3 LDH nanosheets prepared using microchannel reactor, which indicated the obtained nanosheets could be used to fabricate LDH based drug delivery and controlled release system. After being treated with acetic acid, inactive carboxylate form HCPT transformed into bioactive lactone form HCPT. It is important for preparing high bioactive HCPT-LDH nanohybrids. The co-assembly method showed various remarkable advantages, such as simple procedure, short reation time, mild condition, high drug loading and good dispersity. Additionally, drug loading can be easily controlled by adjusting raw material ratios. HCPT molecules arrays aslant in double layers along longitudinal axis in the gallery of LDH. The nanohybrids showed well controlled release property and in vitro drug release kinetics from the nanohybrids could be fitted with the pseudo-second-order kinetic model. The diffusion of HCPT through the LDH particles played an important role in the control of the drug release.

Key words: Hydroxyl camptothecin, Layered double hydroxides, Co-assemble, Nanohybrids

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