CN116603117B - 一种具有药物释放性能的超疏水药物结构涂层及其制法 - Google Patents
一种具有药物释放性能的超疏水药物结构涂层及其制法 Download PDFInfo
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Abstract
本发明属于生物医用功能材料技术领域,涉及一种具有药物释放性能的超疏水药物结构涂层及其制法。本发明酚胺化合物与金属离子在氧化剂的作用下反应,在载药纳米颗粒外生成一层酚胺/金属纳米颗粒膜层,该膜层既充当载药纳米颗粒的保护层及交联物质,也可将载药纳米颗粒固定在基底材料表面,于表面形成具有纳米多级结构的药物涂层。该涂层中富含双键,在紫外辐照下与活性氧自由基作用,可快速与氟化物中的巯基发生反应。此外多酚药物、金属离子也会与氟化物、纳米膜层中的苯环和酚羟基发生化学作用,同时将药物或金属离子与氟化物固定在纳米膜层表面,使疏水层中也含有药物,最终在材料表面构建具有程序响应性药物释放性能的超疏水药物结构涂层。
Description
技术领域
本发明属于生物医用功能材料技术领域,具体涉及一种具有药物释放性能的超疏水药物结构涂层及其制法。
背景技术
传统的血液接触器械和材料如中心静脉导管、cuff管、留置针、血液透析导管、动脉血管支架、静脉血管支架、心脏瓣膜等,在植入体内后水和离子首先与材料表面接触,随后就是血浆蛋白在表面的非特异性粘附和变性,形成纤维蛋白,进而引发细胞如血小板、红血球、炎症细胞的粘附、聚集和激活并释放炎症因子,同时富蛋白表面也为细菌的定殖提供有利条件,最终导致急性血栓、急性炎症和感染,使器械植入失效。因此,从器械植入后的源头出发,设计抗污表面即超亲水表面和超疏水表面,通过植入后在体内形成的水合层和空气层阻抗蛋白的非特异性粘附,进而阻止急性血栓、急性炎症和感染的发生。据研究报道,与超亲水表面的阻抗效果相比,超疏水表面具有更为优异的阻抗粘附性能。因此,在血液接触器械或材料表面构建仿生荷叶特性的超疏水涂层,通过人造抗污表面对避免材料植入初期发生不良反应具有重要意义。
然而现阶段超疏水性能的改性有如下问题:
1、随着器械在体内服役时间的延长,器械与血液之间的空气层终将被破坏,在超疏水性能失功后暴露出的疏水表面具有强粘附性能,体液中的蛋白质将快速的在材料表面大量粘附和变性,引发严重的血栓和炎症反应。即依靠单一超疏水平台难以实现长期的抗污。
2、现阶段研究人员基于润湿模型理论,采用模板法、溶胶-凝胶法、化学修饰法、自组装法、热裂解法、化学沉积法、光刻蚀法等工艺方法,仿生制备具有不同水粘附力的超疏水材料表面,虽能达到所需应用性能,但仍存在仪器设备与反应原料价格昂贵、制备步骤繁琐、分层粗糙结构稳固度较低、反应参数较剧烈、损伤基底、难以在复杂结构材料表面实现等问题,并且所制备的微纳拓扑结构都是由惰性物质构建,不具有生物学功能。
故基于此,提出本发明技术方案。
发明内容
为了解决现有技术存在的问题,本发明提供了一种具有药物释放性能的超疏水药物结构涂层的制备方法,所述制备方法包括如下步骤:
(1)将载药纳米颗粒均匀分散在溶剂中,得到载药纳米颗粒悬浊液;
(2)在基底材料表面依次加入载药纳米颗粒悬浊液、酚胺类化合物酸性缓冲液和金属离子酸性缓冲液,并进行反应得到改性基底材料;
(3)将天然活性药物溶液或一氧化氮催化剂溶液,与含巯基氟化物溶液进行混合,得到混合液;
(4)将所述改性基底材料浸没于所述混合液中,并进行紫外光辐照,得到具有药物释放性能的超疏水药物结构涂层。
为便于理解本发明,对本发明的反应过程进行说明:
本发明首先将载药纳米颗粒均匀分散在溶剂中,在酸性环境下,再通过酚胺类化合物与金属离子的相互作用形成多酚-金属复合纳米颗粒(十纳米级)膜层,纳米膜层将载药纳米颗粒(百纳米级)均匀包裹的同时将其牢固固定在基底材料表面,形成具有多级结构的药物涂层;同时,涂层中含有大量的活性官能团如酚羟基、苯环、双键、金属离子等,可以作为进一步反应的活性位点。将氟化物分别与天然活性药物或一氧化氮催化剂混合后,再与下层的纳米多级结构药物涂层中的双键发生点击化学反应、与苯环发生π-π堆积反应、与酚羟基发生螯合或氧化反应、与金属离子发生交联反应等,将氟化物和天然药物或一氧化氮催化剂固定在材料表面,自下而上的构建负载不同药物的超疏水药物结构涂层。该涂层材料在植入体内后首先是超疏水平台发挥抗污作用,当超疏水性能失功后,上层的天然药物或一氧化氮催化剂将催化体内血液中的一氧化氮供体释放一氧化氮以维持植入材料微环境的稳定,利于微环境组织修复;当上层药物维持了微环境较好的状态后,下层的药物纳米载体中的药物将继续发挥修复作用,超疏水涂层中的程序性改变使植入材料维持长效抗污性能。该技术可用于可如导管、滤膜、血管支架、人工血管、心脏瓣膜等材料及器械的表面改性处理。
优选地,步骤(1)中,所述载药纳米颗粒为载药高分子纳米颗粒(高分子纳米球和纳米囊)、载药纳米脂质体、载药聚合物胶束、载药树枝状大分子或载药无机纳米粒子中的一种;所述溶剂为水溶液、乙醇溶液或乙醇与水的混合溶液,所述乙醇与水的混合溶液中,乙醇与水的体积比为0.1~5:0.1~5。
优选地,步骤(2)中,所述酚胺类化合物酸性缓冲液由酚胺类化合物和酸性缓冲液混合而成,所述酚胺类化合物为单宁酸、没食子酸、多巴胺、丹酚酸B、表没食子儿茶素没食子酸酯、表儿茶素没食子酸酯、表儿茶素、去甲肾上腺素、胺多酚、表没食子儿茶素、邻苯二酚、邻苯三酚中的一种或两种以上的组合;所述金属离子酸性缓冲液由金属离子和酸性缓冲液混合而成,所述金属离子为铜离子、铁离子、亚铁离子、铝离子、锌离子、钛离子、铂离子、银离子、金离子、硼离子中的一种或两种以上的组合。
优选地,步骤(2)中,所述酸性缓冲液的pH为3~7;所述酸性缓冲液为乙酸-乙酸盐缓冲液、2-(N-吗啡啉)乙磺酸缓冲液、甘氨酸-盐酸缓冲液、邻苯二甲酸-盐酸缓冲液、邻苯二甲酸氢钾-氢氧化钠缓冲液、磷酸氢二钠-柠檬酸缓冲液、柠檬酸-氢氧化钠-盐酸缓冲液或柠檬酸-柠檬酸钠缓冲液中的一种。
优选地,步骤(2)中,所述基底材料为金属基生物材料、陶瓷基生物材料、高分子基生物材料或复合生物材料中的一种。
优选地,步骤(2)中,所述反应的温度为10~40℃,反应的时间为0.5~5h。
优选地,步骤(3)中,所述天然活性药物为和厚朴酚、厚朴酚、单宁酸、姜黄素、漆黄素、雷公藤红素、黄芩苷、黄芪中的一种或两种以上的组合;所述一氧化氮催化剂为氯化铜、氯化亚铜、醋酸铜、铜卟啉、四对氯苯基卟啉铜、依卟硒林、硒代胱胺、胱氨酸钠盐、硒甲基硒代半胱氨酸、硒代半胱氨酸中的一种或两种以上的组合。
优选地,步骤(3)中,所述含巯基氟化物溶液由含巯基氟化物和溶剂混合而成;所述含巯基氟化物为1H,1H,2H,2H-全氟十二烷硫醇、氟(苯巯基)乙酸乙酯、4-(三氟甲硫基)苯酚、4-(三氟甲基)-2-巯基嘧啶中的一种或两种以上的组合。
优选地,步骤(4)中,所述紫外光的波长为365nm、302nm或254nm;所述辐照的时间为0.1~5h。
基于相同的技术构思,本发明的再一方案是提供一种由上述制备方法得到的具有药物释放性能的超疏水药物结构涂层。
本发明的有益效果为:
1、本发明所述的制备方法,基于酚胺类化合物与金属离子在酸性条件下发生螯合、氧化、交联、聚集和沉积反应,生成同时包含酚胺和金属生物学功能的金属-多酚纳米颗粒,且金属-酚胺复合纳米颗粒有非材料依赖性,可以在不同形状和不同尺寸的材料表面成膜。所以,只需要简单的“one-pot”法即可使金属-酚胺复合纳米颗粒包裹在载药纳米颗粒表面,形成一层均匀的纳米颗粒膜层,该多酚纳米颗粒膜层不但增加了载药纳米颗粒的稳定性,同时将载药纳米颗粒牢固固定在基底材料表面,既极大的提高了材料表面药物的负载量和稳定性,也具有广泛的适用性。
2、传统方法制备的超疏水表面都不具有生物活性,单纯依赖超疏水性能实现被动抗污。区别于惰性结构制备的超疏水表面,本发明所述制备方法得到的超疏水涂层,是由生物活性药物构建,且下层和上层都原位负载有大量的药物,只要涂层存在就有药物存在并长效发挥生物学功能的性能。由超疏水平台(被动抗污)与药物(主动抗污)协同维持材料微环境稳定性,为实现植入材料长效抗污提供了可能。
3、区别于通过物理浸涂和化学接枝在涂层中负载药物,此方法是将药物装载在纳米颗粒中(如聚合物胶束),极大的提高了涂层中药物的负载量。同时,所制备的载药纳米颗粒外表面有一层酚胺纳米膜保护层,在紫外辐照过程中可以有效保护药物的生物活性不被破坏,维持药物原有的生物学性能;同时超疏水的上层也是氟化物与天然药物或者一氧化氮催化剂的结合物,避免了单一氟化物存在时带来的不利影响。
4、本发明操作简单,反应高效、条件温和,具有广谱实用性,仅需通过简单浸泡的方式,即可将不同的载药纳米颗粒修饰在不同材料和形状的基底表面,制备出只要涂层存在就有药物存在并长效发挥生物学功能的程序性药物释放性能的超疏水药物结构涂层。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1是实施例1所得的具有药物释放性能的超疏水药物结构涂层形貌的扫描电子显微镜(SEM)图。
图2是实施例1所得的具有药物释放性能的超疏水药物结构涂层EDS的微区分成元素分布检测结果图。
图3是实施例1所得的具有药物释放性能的超疏水药物结构涂层EDS的微区分成元素含量检测结果图。
图4是实施例1所得的具有药物释放性能的超疏水药物结构涂层的水接触角测试结果图。
图5是实施例1所得的具有药物释放性能的超疏水药物结构涂层的滚动角模拟测试结果图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚,下面将对本发明的技术方案进行详细的描述。显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动的前提下所得到的所有其它实施方式,都属于本发明所保护的范围。
实施例1
本实施例提供一种具有药物释放性能的超疏水药物结构涂层的制备方法,所述制备方法包括如下步骤:
(1)将载药吐温-80(聚合物胶束)均匀分散在乙醇与水的混合溶液中,得到载药纳米颗粒悬浊液;其中,乙醇与水的体积比为1:4;
(2)在洁净金属基生物材料表面依次加入载药纳米颗粒悬浊液、单宁酸乙酸钠缓冲液、铜离子乙酸钠缓冲液,在25℃下反应2.5h,经RO水充分清洗,得到改性基底材料;其中,所述乙酸钠缓冲液的pH为5,载药纳米颗粒、单宁酸和铜离子的终浓度分别为4 mg/mL、2mg/mL和0.5 mg/mL;
(3)将和厚朴酚的乙醇/水混合溶液与1H,1H,2H,2H-全氟十二烷硫醇的乙醇/水混合溶液进行混合,得到混合液;其中,乙醇与水的体积比为9:1;和厚朴酚、1H,1H,2H,2H-全氟十二烷硫醇的浓度分别为0.05 mg/mL和1.5 mg/mL;
(4)将所述改性基底材料浸没于所述混合液中,用波长为365 nm紫外交联仪(紫外交联仪在辐照过程中会产生大量的活性氧自由基)辐照0.5 h,再用乙醇充分清洗样品,自然干燥,即得具有药物释放性能的超疏水药物结构涂层。
实施例2
本实施例提供一种具有药物释放性能的超疏水药物结构涂层的制备方法,所述制备方法包括如下步骤:
(1)将载药聚乳酸纳米球(高分子纳米粒)均匀分散在水中,得到载药纳米颗粒悬浊液;
(2)在洁净高分子基生物材料表面依次加入载药纳米颗粒悬浊液、多巴胺乙酸-乙酸盐缓冲液、银离子乙酸-乙酸盐缓冲液,在20℃下反应5h,经RO水充分清洗,得到改性基底材料;其中,所述乙酸-乙酸盐缓冲液的pH为4,载药纳米颗粒、多巴胺和银离子的终浓度分别为5 mg/mL、2.5 mg/mL和2.5 mg/mL;
(3)将姜黄素的乙醇/水混合溶液与氟(苯巯基)乙酸乙酯的乙醇/水混合溶液进行混合,得到混合液;其中,乙醇与水的体积比为9:1;姜黄素、氟(苯巯基)乙酸乙酯的浓度分别为0.25 mg/mL和2 mg/mL;
(4)将所述改性基底材料浸没于所述混合液中,用波长为365 nm紫外交联仪(紫外交联仪在辐照过程中会产生大量的活性氧自由基)辐照1 h,再用乙醇充分清洗样品,自然干燥,即得具有药物释放性能的超疏水药物结构涂层。
实施例3
本实施例提供一种具有药物释放性能的超疏水药物结构涂层的制备方法,所述制备方法包括如下步骤:
(1)将载药卵磷脂(固体脂质纳米粒)均匀分散在水中,得到载药纳米颗粒悬浊液;
(2)在洁净陶瓷基生物材料表面依次加入载药纳米颗粒悬浊液、表儿茶素没食子酸酯邻苯二甲酸-盐酸缓冲液、铁离子邻苯二甲酸-盐酸缓冲液,在15℃下反应10h,经RO水充分清洗,得到改性基底材料;其中,所述邻苯二甲酸-盐酸缓冲液的pH为3.5,载药纳米颗粒、表儿茶素没食子酸酯和铁离子的终浓度分别为6 mg/mL、3 mg/mL和3 mg/mL;
(3)将硒代胱胺的乙醇/水混合溶液与4-(三氟甲硫基)苯酚的乙醇/水混合溶液进行混合,得到混合液;其中,乙醇与水的体积比为9:1;硒代胱胺、4-(三氟甲硫基)苯酚的浓度分别为0.5 mg/mL和5 mg/mL;
(4)将所述改性基底材料浸没于所述混合液中,用波长为302 nm紫外交联仪(紫外交联仪在辐照过程中会产生大量的活性氧自由基)辐照2 h,再用乙醇充分清洗样品,自然干燥,即得具有药物释放性能的超疏水药物结构涂层。
实施例4
本实施例提供一种具有药物释放性能的超疏水药物结构涂层的制备方法,所述制备方法包括如下步骤:
(1)将载药纳米脂质体均匀分散在水中,得到载药纳米颗粒悬浊液;
(2)在洁净金属基生物材料表面依次加入载药纳米颗粒悬浊液、去甲肾上腺素柠檬酸-柠檬酸钠缓冲液、锌离子柠檬酸-柠檬酸钠缓冲液,在35℃下反应1.5h,经RO水充分清洗,得到改性基底材料;其中,所述柠檬酸-柠檬酸钠缓冲液的pH为4,载药纳米颗粒、去甲肾上腺素和锌离子的终浓度分别为2 mg/mL、1 mg/mL和1 mg/mL;
(3)将依卟硒啉的乙醇/水混合溶液与4-(三氟甲基)-2-巯基嘧啶的乙醇/水混合溶液进行混合,得到混合液;其中,乙醇与水的体积比为9:1;依卟硒啉、4-(三氟甲基)-2-巯基嘧啶的浓度分别为0.25 mg/mL和2.5 mg/mL;
(4)将所述改性基底材料浸没于所述混合液中,用波长为254 nm紫外交联仪(紫外交联仪在辐照过程中会产生大量的活性氧自由基)辐照2.5 h,再用乙醇充分清洗样品,自然干燥,即得具有药物释放性能的超疏水药物结构涂层。
实施例5
本实施例提供一种具有药物释放性能的超疏水药物结构涂层的制备方法,所述制备方法包括如下步骤:
(1)将载药多孔二氧化硅纳米粒子(无机纳米粒子)均匀分散在水中,得到载药纳米颗粒悬浊液;
(2)在洁净高分子基生物材料表面依次加入载药纳米颗粒悬浊液、表没食子儿茶素没食子酸酯甘氨酸-盐酸缓冲液、铂离子甘氨酸-盐酸缓冲液,在35℃下反应1h,经RO水充分清洗,得到改性基底材料;其中,所述甘氨酸-盐酸缓冲液的pH为6,载药纳米颗粒、表没食子儿茶素没食子酸酯和铂离子的终浓度分别为6 mg/mL、2 mg/mL和1 mg/mL;
(3)将雷公藤红素的乙醇/水混合溶液与1H,1H,2H,2H-全氟十二烷硫醇的乙醇/水混合溶液进行混合,得到混合液;其中,乙醇与水的体积比为9:1;雷公藤红素、1H,1H,2H,2H-全氟十二烷硫醇的浓度分别为0.1 mg/mL和1 mg/mL;
(4)将所述改性基底材料浸没于所述混合液中,用波长为365 nm紫外交联仪(紫外交联仪在辐照过程中会产生大量的活性氧自由基)辐照1.5 h,再用乙醇充分清洗样品,自然干燥,即得具有药物释放性能的超疏水药物结构涂层。
实施例6
本实施例提供一种具有药物释放性能的超疏水药物结构涂层的制备方法,所述制备方法包括如下步骤:
(1)将载药泊洛沙姆载药纳米颗粒均匀分散在水中,得到载药纳米颗粒悬浊液;
(2)在洁净陶瓷基生物材料表面依次加入载药纳米颗粒悬浊液、多巴胺乙酸-乙酸盐缓冲液、硼离子乙酸-乙酸盐缓冲液,在25℃下反应2h,经RO水充分清洗,得到改性基底材料;其中,所述乙酸-乙酸盐缓冲液的pH为6.5,载药纳米颗粒、多巴胺和硼离子的终浓度分别为8 mg/mL、4 mg/mL和2 mg/mL;
(3)将铜卟啉的乙醇/水混合溶液与1H,1H,2H,2H-全氟十二烷硫醇的乙醇/水混合溶液进行混合,得到混合液;其中,乙醇与水的体积比为9:1;铜卟啉、1H,1H,2H,2H-全氟十二烷硫醇的浓度分别为0.5 mg/mL和5 mg/mL;
(4)将所述改性基底材料浸没于所述混合液中,用波长为302 nm紫外交联仪(紫外交联仪在辐照过程中会产生大量的活性氧自由基)辐照2.5 h,再用乙醇充分清洗样品,自然干燥,即得具有药物释放性能的超疏水药物结构涂层。
实验例
实施例1所得的具有药物释放性能的超疏水药物结构涂层形貌SEM如图1所示,从图中可以看出超疏水涂层具有微/纳拓扑多级结构。
从图2元素分布图和图3元素含量图可知,在涂层表面均匀分布有涂层中含有铜和氟元素,证明金属离子和氟化物都成功修饰到了材料表面,且铜元素和氟含量分别为3.3Wt%和32.2 Wt%。
用水接触角仪检测涂层的润湿性,从图4的水接触角和图5的滚动角模拟测试结果可以发现,涂层的水接触角大于150°,且具有低(小于10o)的滚动角,证明该程序性药物释放涂层具有仿生荷叶性能的超疏水特性。
具体的,在图5中,将超疏水涂层直接沉积在直径为9厘米的培养皿后,证明涂层具有低滚动角的模拟测试。在第0.1s秒(t=0.1s)时,两滴水滴与表面接触;在第0.2秒(t=0.2s)时,水滴在涂层表面滚动;在0.3~0.4秒(t=0.3s~0.4s),不同的水滴在涂层表面滚动;在0.9秒时,所有水滴滚动并融合在一起。
以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应以所述权利要求的保护范围为准。
Claims (6)
1.一种具有药物释放性能的超疏水药物结构涂层的制法,其特征在于,所述制法包括如下步骤:
(1)将载药纳米颗粒均匀分散在溶剂中,得到载药纳米颗粒悬浊液;其中,所述载药纳米颗粒为载药高分子纳米颗粒、载药纳米脂质体、载药聚合物胶束、载药树枝状大分子或载药无机纳米粒子中的一种;
(2)在基底材料表面依次加入载药纳米颗粒悬浊液、酚胺类化合物酸性缓冲液和金属离子酸性缓冲液,并进行反应得到改性基底材料;其中:
所述酚胺类化合物酸性缓冲液由酚胺类化合物和酸性缓冲液混合而成,所述酚胺类化合物为单宁酸、没食子酸、多巴胺、丹酚酸B、表没食子儿茶素没食子酸酯、表儿茶素没食子酸酯、表儿茶素、去甲肾上腺素、胺多酚、表没食子儿茶素、邻苯二酚、邻苯三酚中的一种或两种以上的组合;
所述金属离子酸性缓冲液由金属离子和酸性缓冲液混合而成,所述金属离子为铜离子、铁离子、亚铁离子、铝离子、锌离子、钛离子、铂离子、银离子、金离子、硼离子中的一种或两种以上的组合;
所述酸性缓冲液的pH为3~7;所述酸性缓冲液为乙酸-乙酸盐缓冲液、2-(N-吗啡啉)乙磺酸缓冲液、甘氨酸-盐酸缓冲液、邻苯二甲酸-盐酸缓冲液、邻苯二甲酸氢钾-氢氧化钠缓冲液、磷酸氢二钠-柠檬酸缓冲液、柠檬酸-氢氧化钠-盐酸缓冲液或柠檬酸-柠檬酸钠缓冲液中的一种;
(3)将天然活性药物溶液或一氧化氮催化剂溶液,与含巯基氟化物溶液进行混合,得到混合液;其中:
所述天然活性药物为和厚朴酚、厚朴酚、单宁酸、姜黄素、漆黄素、雷公藤红素、黄芩苷、黄芪中的一种或两种以上的组合;
所述一氧化氮催化剂为氯化铜、氯化亚铜、醋酸铜、铜卟啉、四对氯苯基卟啉铜、依卟硒林、硒代胱胺、胱氨酸钠盐、硒甲基硒代半胱氨酸、硒代半胱氨酸中的一种或两种以上的组合;
所述含巯基氟化物溶液由含巯基氟化物和溶剂混合而成;所述含巯基氟化物为1H,1H,2H,2H-全氟十二烷硫醇、氟(苯巯基)乙酸乙酯、4-(三氟甲硫基)苯酚、4-(三氟甲基)-2-巯基嘧啶中的一种或两种以上的组合;
(4)将所述改性基底材料浸没于所述混合液中,并进行紫外光辐照,得到具有药物释放性能的超疏水药物结构涂层。
2.根据权利要求1所述具有药物释放性能的超疏水药物结构涂层的制法,其特征在于,步骤(1)中,所述溶剂为水溶液、乙醇溶液或乙醇与水的混合溶液,所述乙醇与水的混合溶液中,乙醇与水的体积比为0.1~5:0.1~5。
3.根据权利要求1所述具有药物释放性能的超疏水药物结构涂层的制法,其特征在于,步骤(2)中,所述基底材料为金属基生物材料、陶瓷基生物材料、高分子基生物材料或复合生物材料中的一种。
4.根据权利要求1所述具有药物释放性能的超疏水药物结构涂层的制法,其特征在于,步骤(2)中,所述反应的温度为10~40℃,反应的时间为0.5~5h。
5.根据权利要求1所述具有药物释放性能的超疏水药物结构涂层的制法,其特征在于,步骤(4)中,所述紫外光的波长为365nm、302nm或254nm;所述辐照的时间为0.1~5h。
6.权利要求1~5任一项所述制法得到的具有药物释放性能的超疏水药物结构涂层。
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