CN114163427A - 两亲性聚集诱导发光材料、近红外聚集诱导发光有机硅纳米粒子及其制备方法、应用 - Google Patents

两亲性聚集诱导发光材料、近红外聚集诱导发光有机硅纳米粒子及其制备方法、应用 Download PDF

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CN114163427A
CN114163427A CN202111546194.1A CN202111546194A CN114163427A CN 114163427 A CN114163427 A CN 114163427A CN 202111546194 A CN202111546194 A CN 202111546194A CN 114163427 A CN114163427 A CN 114163427A
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induced emission
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王东
唐本忠
燕赛赛
孙盼盼
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Abstract

本发明公开了一种两亲性聚集诱导发光材料、近红外聚集诱导发光有机硅纳米粒子及其制备方法、应用。本发明以双亲性AIE分子为构筑纳米材料的软模板,可以灵活操控纳米粒子的组成成分、形貌结构、荧光性质等,此方法为AIE性质从微观层次到介观层次的发展提供了一条简单便捷的途径。通过在近红外有机硅纳米载体AIE‑ONs上构筑多模态的诊疗一体化体系,充分发挥了AIE分子的性能优势,消除了单一治疗方式的弊端,操作方便,成本较低。此方法不仅为AIE‑ONs的大规模制备提供了一种有前景的制备方式,而且可以同时推进近红外AIE光敏剂在抗癌和抗菌材料中的实际应用。

Description

两亲性聚集诱导发光材料、近红外聚集诱导发光有机硅纳米 粒子及其制备方法、应用
技术领域
本发明属于荧光纳米材料技术领域,具体涉及两亲性聚集诱导发光材料、近红外聚集诱导发光有机硅纳米粒子及其制备方法、应用。
背景技术
传统有机荧光分子(如卟啉、酞菁等)的结构刚性强,在生理环境下易聚集,溶解性差,很容易导致荧光猝灭以及活性氧效率大大降低等问题,很难胜任诊疗一体化体系的高效构筑。聚集诱导发光(AIE)概念的提出为解决困扰人类已久的聚集导致淬灭(ACQ)问题提供了良好的应对策略,在荧光诊断领域发展迅速并展现出诸多优势。以AIE为基础的荧光成像具有优异的选择性和敏感性、相对低廉的成本、良好的稳定性和重现性,而具有AIE性质的光敏剂在重复使用过程中不易产生耐药性,不仅在肿瘤的可视化精准治疗中优势突出,而且在微生物检测和抗菌等方面同样表现卓越,是替代传统治疗方案(如手术、化疗和放疗)的有效手段,已经成为一种强大的非侵入式诊断治疗工具。
尽管AIE材料在癌症和细菌感染的诊疗一体化领域已经取得了长足的发展,但由于光敏剂自身的低选择性,将AIE光敏剂与其他支撑材料相互补充、相互复合势在必行。目前,AIE的发展已经从“光学概念”升华为“聚集体科学”,这为纳米尺度上构筑多功能集成的诊疗一体化体系提供了更多的可能性。与小分子药物相比,基于纳米材料构筑的诊疗一体化体系能够将精确诊断、药物联合和靶向治疗等巧妙地整合到空间共存的统一平台上,在实现最大的治疗效率和最小的脱靶毒性等方面具有无与伦比的优势。然而,通过自组装方式构筑的聚集体材料只能稳定存在于临界胶束浓度(CMC)之上,在复杂多变的生理环境中易解体,而且血液循环中的其他影响因素如pH、剪切力、粒子浓度、蛋白质等,也易导致其在未到达病灶之前提前泄露。反之,如果运载体的结构过于稳定,同样也很难实现靶向递送和可控释放。
因此,受到以上纳米结构间优劣对比的启发,合成和开发刺激响应性的纳米载体并探索其潜在的应用还是十分必要的。
发明内容
针对上述存在的问题,本发明旨在提供一种多功能近红外聚集诱导发光有机硅纳米粒子并公开其制备方法和进一步修饰下协同抗肿瘤和抗菌中的应用,旨在解决现有的近红外发射聚集诱导发光纳米材料制备方法复杂、难修饰和生物相容性差等问题。
本发明为解决上述技术问题所采用的技术方案如下:
一种两亲性聚集诱导发光材料,其分子结构通式如式(1)所示:
Figure BDA0003414578110000021
一种如上所述的两亲性聚集诱导发光材料的制备方法,其中,所述方法包括:
将(3-溴丙基)三甲基溴化铵和4-甲基吡啶分散在第一有机溶剂中,在惰性气体保护下反应过夜,得到第一固体化合物;
将4-溴-4',4'-二甲氧基三苯胺、5-醛基-2-噻吩硼酸、[1,1'-双(二苯基膦基)二茂铁]二氯化钯和碳酸钾相混合,在氮气保护下,加入第二有机溶剂,回流反应后,得到第二固体化合物;
将所述第一固体化合物和第二固体化合物溶解于无水乙醇中,加入催化剂,回流反应过夜,得到所述两亲性聚集诱导发光材料。
可选地,所述的制备方法,其中,所述第一有机溶剂选自二甲基甲酰胺、四氢呋喃和甲醇中的一种;所述第二有机溶剂为甲醇和甲苯的混合物。
可选地,所述的制备方法,其中,所述催化剂选自哌啶、氢氧化钠和三乙胺中的一种。
一种近红外聚集诱导发光有机硅纳米粒子的制备方法,其中,包括:
将两亲性聚集诱导发光材料和十六烷基三甲基溴化铵溶解于超纯水中,得到混合溶液;
向所述混合溶液中依次加入氨水及硅源反应后,离心分离,得到所述近红外聚集诱导发光有机硅纳米粒子;
所述两亲性聚集诱导发光材料为采用上述所述的制备方法得到,或所述两亲性聚集诱导发光材料的分子式如权利要求1所述。
可选地,所述的制备方法,其中,所述硅源为原硅酸四乙酯和3-氨丙基三甲氧基硅烷的混合物。
一种近红外聚集诱导发光有机硅纳米粒子,其中,由上述所述制备方法制备得到。
一种上述所述近红外聚集诱导发光有机硅纳米粒子的应用,其中,所述近红外聚集诱导发光有机硅纳米粒子作为纳米光敏剂在肿瘤成像和/或细菌成像中的应用。
一种上述所述近红外聚集诱导发光有机硅纳米粒子的应用,其中,所述近红外聚集诱导发光有机硅纳米粒子作为抗肿瘤药物和/或抗菌药物的应用。
可选地,所述的应用,其中,所述肿瘤治疗药物包含所述近红外聚集诱导发光有机硅纳米粒子、阿霉素及靶向分子透明质酸。
有益效果:本发明所述的两亲性聚集诱导发光材料MeOTTVP,其结构中带有甲氧基的三苯胺不仅可以作为强的供电子基团,用以构筑强的给体-受体间关系,使其吸收/发射红移和提高活性氧产生效率,而且此结构也可以作为分子转子,使其具有显著的AIE特性。带有正电的吡啶盐和季铵盐部分的引入,不仅可以赋予分子良好的水溶性,更使其具有了线粒体靶向的功能。
附图说明
图1是AIE-ONs及其复合材料的具体制备路线图;
图2是MeOTTVP在水溶液中表面张力随浓度变化的趋势图;
图3是MeOTTVP在水溶液中的紫外吸收光谱图;
图4是MeOTTVP在水溶液中的荧光发射光谱图;
图5是MeOTTVP固体的荧光发射光谱图;
图6是为随着白光(22.4mW cm-2)照射时间的延长,MeOTTVP和Ce6分别与ROS指示剂DCFH混合液的荧光强度增强倍数;
图7是在不同MeOTTVP引入浓度下制备的AIE-ONs的SEM图;
图8是MeOTTVP浓度为700μM时制备的AIE-ONs的TEM图;
图9是MeOTTVP浓度为700μM时制备的AIE-ONs的活性氧测试;
图10是AIE-ONs-DOX的TEM图;
图11是AIE-ONs-RF的TEM图;
图12是AIE-ONs-HA的TEM图;
图13是AIE-ONs-DOX-HA的TEM图;
图14是不同浓度的MeOTTVP对4T1细胞的暗毒性和光毒性;
图15是不同浓度的AIE-ONs-HA对4T1细胞的暗毒性和光毒性;
图16是MeOTTVP和AIE-ONs分别与金黄色葡萄球菌和大肠杆菌共孵育后的CLSM图;
图17是MeOTTVP、AIE-ONs和AIE-ONs-RF分别与金黄色葡萄球菌在有 /无光敏剂或有/无白光照射处理下的琼脂板照片。
图18是MeOTTVP、AIE-ONs和AIE-ONs-RF分别与大肠杆菌在有/无光敏剂或有/无白光照射处理下的琼脂板照片。
具体实施方式
下面结合具体实施例和附图对本发明作进一步的具体详细描述,但本发明的实施方式不限于此,对于未特别注明的工艺参数,可参照常规技术进行。
名词说明
两亲性聚集诱导发光材料MeOTTVP
近红外聚集诱导发光有机硅纳米粒子AIE-ONs
阿霉素DOX
靶向分子透明质酸HA
抗生素利福平RF
本发明所提供的两亲性聚集诱导发光材料,其具体合成路线如下:
Figure BDA0003414578110000051
具体来说,
1)将(3-溴丙基)三甲基溴化铵和4-甲基吡啶相混合,氮气保护下在 DMF溶液中混合反应过夜,重结晶分离得到固体化合物1;
2)将4-溴-4',4'-二甲氧基三苯胺、5-醛基-2-噻吩硼酸、[1,1'-双(二苯基膦基)二茂铁]二氯化钯和碳酸钾相混合,在氮气保护下,加入甲苯和甲醇的混合溶剂,回流反应后,柱层析分离得到橙红色固体化合物2;
3)将所述化合物1和化合物2溶解于无水乙醇中,加入哌啶做催化剂,回流反应过夜,柱层析分离得到红黑色产物,即MeOTTVP。
如图1所示,基于相同的发明构思,本发明还提供一种近红外聚集诱导发光有机硅纳米粒子的制备方法,其方法步骤:
将MeOTTVP和十六烷基三甲基溴化铵(CTAB)共同溶解于超纯水中,加入氨水催化,稳定搅拌30min后,逐滴加入混合硅源原硅酸四乙酯(TEOS) 和3-氨丙基三甲氧基硅烷(APS),继续搅拌4h后,离心分离,用乙醇充分洗涤之后,获得纳米粒子AIE-ONs。在此过程中,通过简单地调节MeOTTVP 的引入浓度就能够有效地调控纳米粒子的形貌结构,获得不同尺寸大小和荧光性质的AIE-ONs。
进一步地,所述AIE-ONs通过自组装,可以进一步有效地修饰抗癌药物阿霉素(DOX)和靶向分子透明质酸(HA),其方法步骤:
将AIE-ONs超声分散于超纯水中,将DOX的水溶液加入,超声分散均匀之后,避光下继续震荡4h,离心分离,超纯水洗涤之后,获得AIE-ONs-DOX。将AIE-ONs-DOX进一步超声分散在纯水中,加入HA的水溶液,超声分散均匀之后,避光下继续震荡8h,离心分离,超纯水洗涤之后,获得 AIE-ONs-DOX-HA。所述AIE-ONs-DOX-HA可以用于肿瘤成像和治疗中。
进一步地,所述AIE-ONs通过自组装,可以进一步有效地修饰抗生素利福平(RF),其方法步骤:
将AIE-ONs超声分散于超纯水中,将RF的水溶液加入,超声分散均匀之后,避光下继续震荡8h,离心分离,超纯水洗涤之后,获得AIE-ONs-RF。所述AIE-ONs-RF可以用于细菌成像和抗菌中。
本实施例中,以双亲性AIE分子为构筑纳米材料的软模板,可以灵活操控纳米粒子的组成成分、形貌结构、荧光性质等,此方法为AIE性质从微观层次到介观层次的发展提供了一条简单便捷的途径。通过在近红外有机硅纳米载体AIE-ONs上构筑多模态的诊疗一体化体系,充分发挥了AIE 分子的性能优势,消除了单一治疗方式的弊端,操作方便,成本较低。此方法不仅为AIE-ONs的大规模制备提供了一种有前景的制备方式,而且可以同时推进近红外AIE光敏剂在抗癌和抗菌材料中的实际应用。
下面通过具体的实施例对本发明所提供的两亲性聚集诱导发光材料、近红外聚集诱导发光有机硅纳米粒子及其制备方法、应用,做进一步的解释说明。
实施例1:
两亲性聚集诱导发光分子MeOTTVP的制备
将化合物1(70.8mg,0.20mmol)和化合物2(87.2mg,0.21mmol) 溶解在无水乙醇(10mL)中,然后加入几滴哌啶催化,搅拌回流过夜,待反应完全后冷却,减压浓缩得到粗产物;以二氯甲烷/甲醇(50:1)作为洗脱剂,通过中性氧化铝柱色谱法对粗产物进行纯化,得到102.2mg黑红色固体产物,即MeOTTVP,产率为68%。产物的核磁和质谱表征数据如下:
1H NMR(600MHz,CD3OD):δ8.82(d,J=6.4Hz,2H),8.13-8.08 (m,3H),7.48-7.44(m,2H),7.30(d,J=4.2Hz,1H),7.06-7.00 (m,5H),6.91-6.89(m,4H),6.85-6.81(m,3H),4.64(t,J=18.0 Hz,2H),3.79(s,6H),3.61(m,2H),3.24(s,9H),2.63-2.56(m, 2H).13CNMR(600MHz,CD3OD):156.71,154.35,149.87,149.53,143.58, 139.91,138.17,135.20,134.48,126.95,126.41,124.60,123.23, 122.83,119.73,119.03,114.61,62.46,56.34,54.65,52.69,24.82. IESI HRMS:C37H41Br2N3O2S[M-Br]+的计算值为670.2097,实际测量值为 670.2095;[M-2Br]2+/2的计算值为295.6454,实际测量值为295.6454。
图2所示为MeOTTVP在水溶液中的表面张力随浓度变化的趋势图。可以看出,随着MeOTTVP浓度的增加,水的表面张力逐渐下降,经过一个拐点后,趋于平缓,通过曲线变化可知其临界胶束浓度为15μM,远远低于 CTAB的临界胶束浓度880μM,其优异的表面活性为引导纳米粒子的可控制备创造了良好条件。图3为MeOTTVP在水溶液中的紫外吸收光谱图,可以发现其最大吸收峰为495nm。图4为MeOTTVP在水溶液中的荧光发射光谱图,其最大荧光发射峰为670nm,发射范围最大可以延长到900nm,具有较宽的荧光发射峰。图5为MeOTTVP固体的荧光发射光谱图,其最大荧光发射峰为750nm,具有大的斯托克斯位移和强的近红外荧光发射。
白光照射下MeOTTVP在溶液中的ROS产生情况,主要通过2',7'-二氯二氢荧光素二乙酸酯(DCFH-DA)作为指示剂进行检测。图6为随着白光(5 mW cm-2)照射时间的延长,MeOTTVP和商业染料二氢卟吩(Ce6)分别与DCFH (10μM)混合后的荧光强度增强倍数。单独的DCFH几乎无荧光,加入MeOTTVP 后,随着白光的照射,DCFH的荧光强度迅速增强,而同浓度下Ce6对DCFH 荧光强度的增强却十分有限,证明白光照射下MeOTTVP能够比商业染料Ce6更能高效地产生ROS。
实施例2:
聚集诱导发光有机硅纳米粒子(AIE-ONs)的制备与优化
将MeOTTVP、CTAB(5mg,2.0mM)和氨水(170μL)混合后共同分散于超纯水中,在30℃下搅拌30min后,将混合硅源TEOS(30μL) 和APS(30μL)同时加入,继续搅拌反应4h后,离心分离,乙醇洗涤之后获得产物AIE-ONs。在MeOTTVP的辅助下,通过一锅法可以简单便捷地制备出多种形貌规整的AIE-ONs,根据MeOTTVP的不同引入浓度,将产物编号为A-n(n=100,200,350,500,600,700,800和900)。
不同AIE-ONs的SEM图如图7所示,随着MeOTTVP引入浓度的增加,不仅可以赋予纳米粒子更强的荧光性质,而且其尺寸也逐渐从300nm演变为150nm,逐渐变小。然而,过高浓度的MeOTTVP也会显著增加反应液的粘度,不利于形貌的持续优化,因此在浓度为700μM时可以获得荧光性质和形貌结构最佳的AIE-ONs,编号为A-700,其内部结构如图8所示,A-700为表面光滑的球形形貌。通过进一步乙醇诱导有机硅体系中的簇集发光性质(CTE),能够进一步制备出Ac-700,其荧光性质和分散性均会得到明显改善。如图9所示,Ac-700在白光照射下也能高效的产生活性氧,而单纯的有机硅纳米粒子Ac-0则没有活性氧产生。
实施例3:
AIE-ONs的进一步表面修饰
AIE-ONs结构中有机硅APS成分的存在使其表面富含氨基和羟基,通过氢键和亲疏水作用可以方便地在其表面进一步修饰化疗药物阿霉素(DOX) 或抗生素利福平(RF)。将AIE-ONs超声分散在超纯水之中,然后加入DOX 或RF的水溶液,超声分散之后,于黑暗之中继续震荡4h,离心分离,洗涤之后即可获得负载药物的纳米复合材料AIE-ONs-DOX或AIE-ONs-RF。
图10和图11分别为AIE-ONs-DOX和AIE-ONs-RF的TEM图,纳米球表面变得更加粗糙,在原有纳米球的表面可以明显观察到表面药物的负载情况,通过分析负载前后溶液的紫外吸收,发现AIE-ONs对DOX和RF的负载能力可以分别达到400和119.2mg/g。
为了增加纳米材料在生物体内的生物相容性和靶向性质,通过静电自组装的方式可以有效地在其表面包覆负电位的透明质酸(HA)。将AIE-ONs 或AIE-ONs-DOX超声分散在纯水之中,然后加入HA的水溶液,超声分散之后,于黑暗之中继续震荡8h,离心分离,即可获得AIE-ONs-HA或 AIE-ONs-DOX-HA。
图12和图13分别为AIE-ONs-HA和AIE-ONs-DOX-HA的TEM图,纳米球表面变得更加粗糙,通过电位测试也能够进一步证明HA在其表面的包覆。 HA包覆之后,AIE-ONs的电位由42.1mV变为-8.3mV,AIE-ONs-DOX的电位由29.0mV变为5.9mV。
实施例4:
MeOTTVP和有机硅纳米粒子对细胞的暗毒性和光毒性
MeOTTVP和有机硅纳米粒子的暗毒性测试,主要通过对小鼠乳腺癌细胞 4T1进行MTT实验研究。首先,在96孔板中将细胞进行培养,每孔接种5000 个细胞。培养过夜之后,用混合了不同浓度的MeOTTVP或有机硅纳米粒子的新鲜培养基替换掉原有的培养基。继续孵育24h后,将培养基重新换成包含MTT(500μg/mL)的新鲜培养基,并继续孵育4h。最后,将所有培养基去掉,每孔加入100μL的DMSO进行溶解,震荡10min后用酶标仪对595nm处的紫外吸收值进行测试。根据每孔的紫外吸收值与对照组进行计算,得出其暗毒性大小。MeOTTVP和有机硅纳米粒子的光毒性测试,主要通过对4T1细胞的杀伤效果进行研究,其具体操作过程与其暗毒性测试非常接近,只是在加入MeOTTVP或有机硅纳米粒子4h后,用白光(24mW cm-2)照射10min,之后再继续孵育20h进行MTT测试。
图14为不同浓度的MeOTTVP对4T1细胞的光毒性和暗毒性对比,可以看出,避光条件下MeOTTVP对4T1细胞几乎没有毒性,而光照参与之后,癌细胞被极大的杀伤,具有优异的光动力效果。图15为不同浓度的 AIE-ONs-HA对4T1细胞的光毒性和暗毒性对比,对于AIE-ONs-HA来说,避光条件下同样对4T1细胞几乎没有毒性,而引入光照之后,细胞活性迅速下降,进一步延长光照时间为20min后,细胞活性还会被进一步削弱,也证实了AIE-ONs同样具有良好的光动力效果。对于AIE-ONs-DOX-HA来说,药物DOX的引入使得纳米粒子也具有了一定的暗毒性。在此基础上,通过进一步光照可以极大地杀伤癌细胞,在较低的浓度下即可高效的杀伤癌细胞,其半数致死浓度仅为10.5μg/mL。
实施例5:
MeOTTVP和有机硅纳米粒子对细菌的成像和杀伤效果
细菌实验采用革兰氏阳性菌(金黄色葡萄球菌,S.aureus)和革兰氏阴性菌(大肠杆菌,E.coli)作为代表。将繁殖的细菌(1×109CFU mL-1) 与含有MeOTTVP(2μM)或AIE-ONs(10μg/mL)的PBS溶液相混合,震荡分散之后在37℃下孵育30min,离心分离,洗涤之后,将2μL染色后的细菌液转移到载玻片上,然后盖上盖玻片进行观察。在激光共聚焦显微镜(CLSM,ZEISS-LSM900)下对大肠杆菌和金黄色葡萄球菌进行成像,具体参数设置如下:激发光为488nm,收集波长600-700nm内的荧光信号。
MeOTTVP和AIE-ONs对大肠杆菌和金黄色葡萄球菌的抗菌活性主要通过传统的平板培养和菌落计数法进行评估。将繁殖的细菌(5×107CFU mL-1) 与含有不同浓度的MeOTTVP或AIE-ONs的PBS溶液相混合,震荡分散之后在37℃下孵育2h。用白光(24mW cm-2)照射10min之后,离心分离,洗涤之后取出100μL(1×104CFU mL-1),涂布在相应的固体琼脂平板上。 37℃下孵育18h之后,进行平板拍照以及菌落计数。根据减少的菌落比例,分别评估MeOTTVP和AIE-ONs对大肠杆菌和金黄色葡萄球菌的抗菌活性。关于MeOTTVP和AIE-ONs在避光下的抗菌活性,其操作过程除了光照部分,其余实验操作完全一致。
图16为MeOTTVP和AIE-ONs分别与大肠杆菌和金黄色葡萄球菌共孵育后的CLSM图,从中可以看出,MeOTTVP与AIE-ONs均能很好的转染金黄色葡萄球菌和大肠杆菌,具有较高信噪比。图17和18为MeOTTVP、AIE-ONs 和AIE-ONs-RF分别与金黄色葡萄球菌和大肠杆菌在有/无光敏剂或有/无白光照射处理下的琼脂板照片。从图中可以看出,只使用PBS的对照组,无论是在暗处还是光照条件下,大肠杆菌和金黄色葡萄球菌均能在琼脂板上生长良好。加入MeOTTVP或AIE-ONs之后,即使没有光照也能一定的减少细菌菌落,说明它们对细菌也有一定的暗毒性。进一步施加光照后,琼脂板上的大肠杆菌和金黄色葡萄球菌仅剩少量的菌落生长,菌落数下降比例接近100%。对于AIE-ONs-RF来说,抗生素RF的引入使得纳米粒子对细菌具有了更高的暗毒性。通过进一步光照,可以实现对革兰氏阳性菌和阴性菌100%的杀灭效果。以上结果表明,MeOTTVP和AIE-ONs对细菌不仅具有一定的暗毒性,而且光照下更具有高效的光动力杀菌效果,而AIE-ONs-RF 能够协同发挥抗生素和光动力的效果,杀菌效果更佳。
以上内容描述了本发明的基本原理、主要特征及性能优势。应当理解的是,本发明的性能与应用不限于上述的举例,对本领域普通技术人员来说,可以根据上述说明加以改进或变换,所有这些改进和变换都应属于本发明所附权利要求的保护范围。

Claims (10)

1.一种两亲性聚集诱导发光材料,其分子结构式如式(1)所示:
Figure FDA0003414578100000011
2.一种如权利要求1所述的两亲性聚集诱导发光材料的制备方法,其特征在于,所述方法包括:
将(3-溴丙基)三甲基溴化铵和4-甲基吡啶分散在第一有机溶剂中,在惰性气体保护下反应过夜,得到第一固体化合物;
将4-溴-4',4'-二甲氧基三苯胺、5-醛基-2-噻吩硼酸、[1,1'-双(二苯基膦基)二茂铁]二氯化钯和碳酸钾相混合,在惰性气体保护下,加入第二有机溶剂,回流反应后,得到第二固体化合物;
将所述第一固体化合物和第二固体化合物溶解于无水乙醇中,加入催化剂,回流反应过夜,得到所述两亲性聚集诱导发光材料。
3.根据权利要求2所述的制备方法,其特征在于,所述第一有机溶剂选自二甲基甲酰胺、四氢呋喃和甲醇中的一种;所述第二有机溶剂为甲醇和甲苯的混合物。
4.根据权利要求2所述的制备方法,其特征在于,所述催化剂选自哌啶、氢氧化钠和三乙胺中的一种。
5.一种近红外聚集诱导发光有机硅纳米粒子的制备方法,其特征在于,包括:
将两亲性聚集诱导发光材料和十六烷基三甲基溴化铵溶解于超纯水中,得到混合溶液;
向所述混合溶液中依次加入氨水及硅源反应后,离心分离,得到所述近红外聚集诱导发光有机硅纳米粒子;
所述两亲性聚集诱导发光材料为采用权利要求2或3所述的制备方法得到,或所述两亲性聚集诱导发光材料的分子式如权利要求1所述。
6.根据权利要求5所述的制备方法,其特征在于,所述硅源为原硅酸四乙酯和3-氨丙基三甲氧基硅烷的混合物。
7.一种近红外聚集诱导发光有机硅纳米粒子,其特征在于,由权利要求5或6所述制备方法制备得到。
8.一种权利要求7所述近红外聚集诱导发光有机硅纳米粒子的应用,其特征在于,所述近红外聚集诱导发光有机硅纳米粒子作为纳米光敏剂在肿瘤成像和/或细菌成像中的应用。
9.一种权利要求7所述近红外聚集诱导发光有机硅纳米粒子的应用,其特征在于,所述近红外聚集诱导发光有机硅纳米粒子作为抗肿瘤药物和/或抗菌药物的应用。
10.根据权利要求9所述的应用,其特征在于,所述肿瘤治疗药物包含所述近红外聚集诱导发光有机硅纳米粒子、阿霉素及靶向分子透明质酸。
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