CN110372577A - 一种吡啶盐荧光探针及制备方法与应用 - Google Patents

一种吡啶盐荧光探针及制备方法与应用 Download PDF

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CN110372577A
CN110372577A CN201910634764.9A CN201910634764A CN110372577A CN 110372577 A CN110372577 A CN 110372577A CN 201910634764 A CN201910634764 A CN 201910634764A CN 110372577 A CN110372577 A CN 110372577A
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刘一
林发旭
余振强
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Abstract

本发明公开了一种吡啶盐荧光探针及制备方法与应用,其中所述荧光探针具有如下结构式:其中,R1和R3分别独立地为卤代苯基、4‑甲氧基苯基中的一种,R2为烷基、含有苯基的基团、含有酯基的基团中的一种。本发明所述荧光探针是具有AIE效应的吡啶盐有机探针分子,通过静电作用将探针分子跟肝素进行有效的结合,导致探针分子间震动受限,进而发出荧光。本发明所述荧光探针毒性低,能够表现出良好的荧光效果,避免在肝素荧光检测时由于聚集引起的自猝灭现象。

Description

一种吡啶盐荧光探针及制备方法与应用
技术领域
本发明涉及肝素检测领域,尤其涉及一种吡啶盐荧光探针及制备方法与应用。
背景技术
肝素是一种负硫酸化的聚合糖胺聚糖(GAG),在生物系统中具有最高的电荷密度,主要(>70%)由三硫酸化的二糖重复单元组成。肝素在调节多种生物学过程中的重要作用,如细胞生长,分化,代谢和炎症。肝素在生物学研究中具有重要意义,能够以高亲和力结合抗凝血酶III,有效增强凝血酶对凝血因子如凝血酶的抑制活性。因此,它在临床上广泛应用于抗凝治疗和静脉血栓的形成。不幸的是,肝素过量可引起各种潜在的灾难性并发症,如出血,骨质疏松症和肝素诱导的血小板减少症。因此,在手术和术后治疗期间灵敏的肝素定量至关重要。
到目前为止,已经报道了几种监测肝素的试验,包括活化凝血时间试验,活化部分促凝血酶原激酶时间试验,毛细管电泳和电化学方法。但是,凝血时间试验、毛细管电泳和电化学方法不够可靠。另一方面,电化学分析存在一些局限性,如低特异性和血清中其他带电物质的干扰。因此,非常需要开发新的肝素检测方法,提高准确性和可靠性。近年来,由于低成本,易操作和高性能,荧光测定已经在监测分析物方面获得了相当大的关注。最近,已经开发了一些荧光探针,以检测小分子,生物大分子和微环境。然而,其中一些基于复杂的纳米有机杂化体系,水溶性和毒性差,限制了它们的实际应用。同时,一些常规荧光团的荧光发射,如香豆素,罗丹明,苯并噻唑衍生物等等,被发现通常在水溶液中部分或完全淬灭。同时,许多这些探针的荧光发光是基于与肝素紧密堆积的复合物形成的,它们的荧光可能由于聚集引起的猝灭(ACQ)而遭受自猝灭。
因此,现有技术还有待于改进和发展。
发明内容
鉴于上述现有技术的不足,本发明的目的在于提供一种吡啶盐荧光探针及制备方法与应用,旨在解决现有荧光探针在肝素检测容易发生荧光猝灭的问题。
一种吡啶盐荧光探针,其中,所述吡啶盐荧光探针具有如下结构式:
其中,R1和R3分别独立地为卤代苯基、4-甲氧基苯基中的一种,R2为如下基团中的一种:
其中Me为甲基,虚线表示化学键连接位点。
所述的吡啶盐荧光探针,其中,所述吡啶盐荧光探针的结构式中,所述卤代苯基为溴代苯基。
所述的吡啶盐荧光探针,其中,所述吡啶盐荧光探针的结构式中,所述卤代苯基为4-溴代苯基。
一种如上所述吡啶盐荧光探针的制备方法,其中,包括以下步骤:
制备4-(1,2,2-三苯基乙烯基)苯甲醛;
在保护性气体氛围下,将4-(1,2,2-三苯基乙烯基)苯甲醛、苯基酮类化合物、第一溶剂和三氟化硼乙醚混合,加热反应制得到中间产物;
将所述中间产物溶解在第二溶剂中,并加入胺类化合物,加热至80-100℃,反应制得到吡啶盐荧光探针。
所述的吡啶盐荧光探针的制备方法,其中,所述制备4-(1,2,2-三苯基乙烯基)苯甲醛包括以下步骤:
将(2-溴乙烯-1,1,2-三基)三苯、(4-甲酰苯基)硼酸、碳酸钾和四(三苯基膦)钯混合,在保护性气体氛围下,加入1,4二氧六环和水,加热至80-120℃,反应得到4-(1,2,2-三苯基乙烯基)苯甲醛。
所述的吡啶盐荧光探针的制备方法,其中,所述保护性气体为氮气或惰性气体。
所述的吡啶盐荧光探针的制备方法,其中,所述苯基酮类化合物为1-(4-溴苯基)乙-1-酮、1-(3-溴苯基)乙-1-酮、1-(2-溴苯基)乙-1-酮、1-(4-甲氧基)乙-1-酮中的一种。
所述的吡啶盐荧光探针的制备方法,其中,所述胺类化合物为正戊胺、己烷-1-胺、苯胺、甘氨酸甲酯盐酸盐中的一种。
所述的吡啶盐荧光探针的制备方法,其中,所述第一溶剂为甲苯;所述第二溶剂为乙醇。
一种如上所述吡啶盐荧光探针在制备肝素检测荧光制剂中的应用。
有益效果:本发明所述吡啶盐荧光探针具有AIE效应的吡啶盐有机探针分子,通过静电作用将探针分子跟肝素进行有效的结合,导致探针分子间震动受限,进而发出荧光。本发明所述吡啶盐荧光探针毒性低,能够表现出良好的荧光效果,避免在肝素荧光检测时由于聚集引起的自猝灭现象。
附图说明
图1为本发明所述吡啶盐荧光探针分子合成路线示意图。
图2为本发明实施例2所制备的吡啶盐荧光探针对肝素的滴定实验图。
图3为本发明实施例2制备的吡啶盐荧光探针的荧光曲线对比图。
图4为本发明实施例3所制备的吡啶盐荧光探针对肝素的滴定实验图。
图5为本发明实施例3制备的吡啶盐荧光探针的荧光曲线对比图。
图6为本发明实施例4所制备的吡啶盐荧光探针对肝素的滴定实验图。
图7为本发明实施例4制备的吡啶盐荧光探针的荧光曲线对比图。
具体实施方式
本发明提供一种吡啶盐荧光探针及制备方法与应用,为使本发明的目的、技术方案及效果更加清楚、明确,以下对本发明进一步详细说明。应当理解,此处所描述的具体实施例仅仅用以解释本发明,并不用于限定本发明。
本发明发现在肝素表面有着大量的含有负电的集团,如磺酸基团、碳酸基团等。因此,利用电荷之间的相互作用,通过静电作用将探针分子跟肝素进行有效的结合。传统的荧光生色团在高浓度下荧光会减弱甚至不发光,这种现象被称作“浓度猝灭”效应。浓度猝灭的主要原因跟聚集体的形成有关,故浓度猝灭效应通常也被叫做“聚集导致荧光猝灭(aggregation-caused quenching,ACQ)”。2001年,唐本忠教授课题组发现了一个奇特的现象:一些噻咯分子在溶液中几乎不发光,而在聚集状态或固体薄膜下发光大大增强。因为此发光增强是由聚集所导致的,故我们形象地将此现象定义为“聚集诱导发光(aggregation-induced emission,AIE)”。基于此,本发明选用明星分子四苯基乙烯为基元制作一个具有荧光性质的新型荧光探针分子。通过电荷作用具有新型荧光的探针分子吸附在肝素上,导致探针分子间震动受限,进而发出荧光。
本发明提供一种吡啶盐荧光探针,其中,所述吡啶盐荧光探针具有如下结构式:
其中,R1和R3分别独立地为卤代苯基、4-甲氧基苯基中的一种,R2为如下基团中的一种:
其中Me为甲基,虚线表示化学键连接位点。
本发明所述吡啶盐荧光探针是具有AIE效应的吡啶盐有机探针分子,利用电荷之间的相互作用,即通过静电作用将探针分子跟肝素进行有效的结合,导致探针分子间震动受限,进而发出荧光。本发明所述吡啶盐荧光探针水溶性好,毒性低,能够表现出良好的荧光效果,避免在肝素荧光检测时由于聚集引起的自猝灭现象。
优选地,所述吡啶盐荧光探针的结构式中,所述卤代苯基为溴代苯基。本发明中溴代苯基可以是4-溴代苯基、3-溴代苯基、2-溴代苯基等。所述吡啶盐荧光探针均能实现对肝素的荧光检测,并具有良好的荧光效果。其中,与其它取代位置的溴代苯基相比,实验发现,所述卤代苯基为4-溴代苯基时,吡啶盐荧光探针的荧光效果最好。
本发明所述吡啶盐荧光探针结构式中,R2中可以选自烷基,如正戊烷基、正己烷基等;R2中可以选自含有苯基的基团,如苯基、苯甲基等;R2中也是可以选自含有酯基的基团,如 等。本发明中所述吡啶盐荧光探针结构式中N原子带负电,从而通过静电作用与带负电的四氟化硼基团结合。所述结构式的荧光分子的稳定高,具有良好的水溶性,并在对肝素荧光检测中表现出良好的荧光效果。
具体地,本发明所述吡啶盐荧光探针,具有如下结构式中的一种:
请参阅图1,本发明还提供一种吡啶盐荧光探针的制备方法,其中,包括以下步骤:
制备4-(1,2,2-三苯基乙烯基)苯甲醛;
优选地,所述制备4-(1,2,2-三苯基乙烯基)苯甲醛包括以下步骤:
将(2-溴乙烯-1,1,2-三基)三苯、(4-甲酰苯基)硼酸、碳酸钾和四(三苯基膦)钯混合,在保护性气体氛围下,加入1,4二氧六环和水,加热至80-120℃,反应得到4-(1,2,2-三苯基乙烯基)苯甲醛。
所述4-(1,2,2-三苯基乙烯基)苯甲醛的结构式如下所示:
具体地,所述4-(1,2,2-三苯基乙烯基)苯甲醛的制备方法包括步骤:按物质的量比计,1份(2-溴乙烯-1,1,2-三基)三苯、2份(4-甲酰苯基)硼酸、3份碳酸钾和0.1份四(三苯基膦)钯(0),在N2条件下,加入去1,4二氧六环和去离子水,加热至100℃,搅拌过夜,提纯后得到固体产物(4-(1,2,2-三苯基乙烯基)苯甲醛)。
优选地,所述提纯后得到固体产物,包括步骤:用饱和盐水(50ml)萃取3次,取有机相,用减压装置旋干,得到粗产品,粗产品用DCM/PE=1/5硅胶柱分离,得到4-(1,2,2-三苯基乙烯基)苯甲醛。
以4-(1,2,2-三苯基乙烯基)苯甲醛为基础制备吡啶盐荧光探针,包括步骤:
在保护性气体氛围下,将4-(1,2,2-三苯基乙烯基)苯甲醛、苯基酮类化合物、、第一溶剂和三氟化硼乙醚混合,加热反应制得到中间产物;
将所述中间产物溶解在第二溶剂中,并加入胺类化合物,加热至80-100℃,反应制得到吡啶盐荧光探针。
具体地,制备吡啶盐荧光探针包括步骤:按物质的量比计,取1份4-(1,2,2-三苯基乙烯基)苯甲醛、2.5份苯基酮类化合物,在氮气条件下加入甲苯直至固体全部溶解,再加入1.5份三氟化硼乙醚;在80℃下搅拌过夜,加入乙醚,静置沉淀过滤,得到滤饼(中间产物);在烘干后取滤饼(中间产物)溶解在乙醇中,再加入1.5份胺类化合物,加热到90℃,搅拌过夜。加入乙醚,在低温下静置4h,过滤并用50ml乙醚清洗,取滤饼烘干得到黄色固体(吡啶盐荧光探针)。
上述步骤中,所述乙醚用于对中间产物或最终产物(吡啶盐荧光探针)进行清洗,出去产物中的杂质。本发明采用乙醚进行清洗是能够有效实现对产物进行提纯。
优选地,所述苯基酮类化合物为1-(4-溴苯基)乙-1-酮、1-(3-溴苯基)乙-1-酮、1-(2-溴苯基)乙-1-酮、1-(4-甲氧基)乙-1-酮中的一种。采用上述苯基酮类化合物能够制备得到具有良好荧光效果的吡啶盐荧光探针。
优选地,所述胺类化合物为烷基胺类化合物、苯胺类化合物、脂肪胺类化合物中的一种,如正戊胺、己烷-1-胺、苯胺或甘氨酸甲酯盐酸盐。采用上述胺类化合物能够制备得到具有良好荧光效果的吡啶盐荧光探针。
优选地,所述保护性气体为氮气或惰性气体。更有选地,所述保护性气体为氮气。保护性气体是不与反应中的其他反应物质发生反应的气体,能够提高目标物质的产率和产品质量。对于本发明来说,氮气价格相对来说价格低廉,是一种较佳的保护性气体。
优选地,所述第一溶剂为甲苯;所述第二溶剂为乙醇。本发明中第一溶剂和第二溶剂均是在相应的反应体系中用作反应溶剂。相对来说,甲苯和乙醇具有溶解效果好,是一种较佳的选择。
下面通过具体的实施例对本发明的技术方案作进一步说明。
实施例1
制备4-(1,2,2-三苯基乙烯基)苯甲醛
在250ml双口烧瓶中加入(2-溴乙烯-1,1,2-三基)三苯(1.0eq,20.0g,59.66mmol);(4-甲酰苯基)硼酸(2.0eq,17.89g,119.32mmol);碳酸钾(3.0eq,24.74g,178.97mmol)和四(三苯基膦)钯(0)(0.1eq,7.11g,5.97mmol),在N2条件下,加入去1,4二氧六环(100ml)和去离子水(20ml),加热至100℃,搅拌过夜。之后用饱和盐水(50ml)萃取3次,取有机相,用减压装置旋干,得到粗产品,粗产品用DCM/PE=1/5硅胶柱分离,得到固体(4-(1,2,2-三苯基乙烯基)苯甲醛)1.12g。
本实施例中,4-(1,2,2-三苯基乙烯基)苯甲醛的产率为93.36%。
本实施例中,4-(1,2,2-三苯基乙烯基)苯甲醛的氢谱测试结果为:1HNMR(400MHz,Chloroform-d)δ9.90(s,1H),7.62(d,J=7.9Hz,2H),7.20(d,J=7.8Hz,2H),7.13(dt,J=3.6Hz,9H),7.02(d,J=7.5,4.2Hz,6H)。可见,本发明能够成功制备得到4-(1,2,2-三苯基乙烯基)苯甲醛。
实施例2
2,6-双(4-溴苯基)-1-戊基-4-(4-(1,2,2-三苯基乙烯基)苯基)吡啶-1-四氟硼酸盐,其结构式如下所示:
2,6-双(4-溴苯基)-1-戊基-4-(4-(1,2,2-三苯基乙烯基)苯基)吡啶-1-四氟硼酸盐的制备方法包括:
取250ml双口烧瓶中加入4-(1,2,2-三苯基乙烯基)苯甲醛(1.0eq,1.0g,2.77mmol);1-(4-溴苯基)乙-1-酮(2.5eq,1.38g,6.94mmol)在氮气条件下加入甲苯直至固体全部溶解,再加入三氟化硼乙醚(1.5eq,700mg,4.16mmol)。在80℃下搅拌过夜,加入乙醚,静置沉淀过滤得到滤饼(中间产物);取滤饼,在烘干后取500mg加入100ml双口烧瓶中,加入乙醇溶解,再加入正戊胺(1.5eq,290mg,3.33mmol)加热到90℃,搅拌过夜。加入乙醚,在低温下静置4h,过滤并用50ml乙醚清洗,取滤饼烘干得到黄色固体(2,6-双(4-溴苯基)-1-戊基-4-(4-(1,2,2-三苯基乙烯基)苯基)吡啶-1-四氟硼酸盐)200mg。
本实施例中,所述2,6-双(4-溴苯基)-1-戊基-4-(4-(1,2,2-三苯基乙烯基)苯基)吡啶-1-四氟硼酸盐的产率为41%。
本实施例中,产物的氢谱测试结果为:1H NMR(500MHz,DMSO-d6)δ8.42(s,2H),8.09–8.04(m,2H),7.96–7.90(m,4H),7.81–7.74(m,4H),7.22–7.09(m,11H),7.02(ddt,J=17.3,7.6,1.9Hz,6H),4.29–4.22(m,2H),1.33(dq,J=12.7,7.4Hz,2H),0.86–0.75(m,2H),0.78–0.68(m,2H),0.56(t,J=7.2Hz,3H).13C NMR(151MHz,DMSO-d6)δ155.22,153.56,148.28,143.19,143.13,142.92,142.83,139.86,132.53,132.26,131.83,131.15,131.12,131.04,131.03,128.58,128.52,128.47,128.34,127.51,127.39,126.23,125.21,54.76,40.53,28.68,27.77,21.13,13.64。可见,本实施例成功制备得到2,6-双(4-溴苯基)-1-戊基-4-(4-(1,2,2-三苯基乙烯基)苯基)吡啶-1-四氟硼酸盐。
实施例3
2,6-双(4-溴苯基)-1-(2-甲氧基-2-氧代乙基)-4-(4-(1,2,2-三苯基乙烯基)苯基)吡啶-1-四氟硼酸盐,其结构式如下所示:
其中,Me为甲基。
所述2,6-双(4-溴苯基)-1-(2-甲氧基-2-氧代乙基)-4-(4-(1,2,2-三苯基乙烯基)苯基)吡啶-1-四氟硼酸盐的制备方法包括步骤:
将含有1-(4-溴苯基)乙-1-酮(2.5eq,4.69g,23.56mmol)和4-(1,2,2-三苯基乙烯基)苯甲醛(1.0eq,2.00g,5.55mmol)的两颈250毫升的底部烧瓶抽空并用氮气。并向烧瓶中加入20ml无水甲苯。然后将反应混合物加热至80℃并保持回流并搅拌过夜。在该烧瓶中加入乙醚并保持0℃后,过滤红色固体(中间产物)。将红色固体(1eq,500mg,618.57μmol)装入一个250ml的双颈烧瓶中,抽空并用氩气再加入三次。并向烧瓶中加入15ml无水乙醇(EtOH)。然后将与Et3N混合的甘氨酸甲酯盐酸盐(1.1eq,113..11mg,900.89μmol)加入该烧瓶中,然后将反应混合物加热至90℃并保持回流过夜。在该烧瓶中加入乙醚并保持冷的温度后,过滤黄色固体(2,6-双(4-溴苯基)-1-(2-甲氧基-2-氧代乙基)-4-(4-(1,2,2-三苯基乙烯基)苯基)吡啶-1-四氟硼酸盐)。
本实施例中,所述2,6-双(4-溴苯基)-1-(2-甲氧基-2-氧代乙基)-4-(4-(1,2,2-三苯基乙烯基)苯基)吡啶-1-四氟硼酸盐的产率为36.41%。
本实施例中,产物的氢谱测试结果为:1HNMR(500MHz,DMSO-d6)δ8.53(s,2H),8.13-8.09(m,2H),7.92-7.89(m,4H),7.63(dd,J=8.2,3.2Hz,4H),7.21-7.13(m,11H),7.07-6.98(m,6H),5.18(d,J=5.0Hz,2H),3.47(s,3H)。可见,本实施例成功制备得到2,6-双(4-溴苯基)-1-(2-甲氧基-2-氧代乙基)-4-(4-(1,2,2-三苯基乙烯基)苯基)吡啶-1-四氟硼酸盐。
实施例4
2,6-双(3-溴苯基)-1-戊基-4-(4-(1,2,2-三苯基乙烯基)苯基)吡啶-1-鎓四氟硼酸盐,结构式如下所示:
所述2,6-双(3-溴苯基)-1-戊基-4-(4-(1,2,2-三苯基乙烯基)苯基)吡啶-1-鎓四氟硼酸盐的制备方法,包括步骤:
将含有1-(3-溴苯基)乙-1-酮(2.5eq,4.69g,23.56mmol)和2(1.0eq,2.00g,5.55mmpl)的两颈250毫升的底部烧瓶抽空并用氩气再填充。并向烧瓶中加入20ml无水甲苯。然后将反应混合物加热至80℃并保持回流并搅拌过夜。在该烧瓶中加入乙醚并保持0℃后,过滤红色固体。将红色固体(1eq,250mg,346.49μmol)装入一个250ml的双颈烧瓶中,抽真空并用氩气再加注三次。并向烧瓶中加入15ml EtOH。然后将己烷-1-胺(1.5eq,45.3mg,519.43μmol)加入该烧瓶中,然后将反应混合物加热至90℃并保持回流过夜。在该烧瓶中加入乙醚并保持冷的温度后,过滤黄色固体(2,6-双(3-溴苯基)-1-戊基-4-(4-(1,2,2-三苯基乙烯基)苯基)吡啶-1-鎓四氟硼酸盐)。
本实施例中,所述2,6-双(3-溴苯基)-1-戊基-4-(4-(1,2,2-三苯基乙烯基)苯基)吡啶-1-鎓四氟硼酸盐的产率为31.39%。
本实施例中,产物的氢谱测试结果为:1HNMR(500MHz,DMSO-d6)δ8.46(s,2H),8.11-8.06(ms,4H),7.92(m,J=8.1Hz,2H),7.83(m,J=7.8Hz,2H),7.66(t,J=7.9Hz,2H),7.16(ddddttt,J=8.3,7.0,4.6Hz,10H),7.06-6.98(dddd,6H),4.24(s,2H),1.36(t,J=7.7Hz,2H),0.78(dq,J=30.0,7.6Hz,4H),0.58(t,J=7.1Hz,3H).13C NMR(151MHz,DMSO-d6)δ154.46,142.84,135.26,134.25,132.26,131.62,131.15,131.12,131.03,128.80,128.66,128.52,128.48,128.34,127.40,126.44,122.54,40.52,28.79,27.76,21.12,13.65。可见,本实施例成功制备得到2,6-双(4-溴苯基)-1-戊基-4-(4-(1,2,2-三苯基乙烯基)苯基)吡啶-1-四氟硼酸盐。
实施例5
将实施例2-4制备得到吡啶盐荧光探针配制成1*10-5M的吡啶盐荧光探针溶液,在该溶液中加入待检测物分子,该探针分子通过静电作用能吸附在待检测物的表面上,进而通过AIE效应发出黄色的光,来判断检测溶液是否有肝素的存在。在对比实验中,本发明具体将肝素(hep)、透明质酸钠(HA)和硫酸软骨素A钠盐(Chs)分别对所述吡啶盐荧光探针溶液进行滴定,并进行相应的荧光检测。如图2-7所示,生物聚合物分别为本发明实施例中分别对应的肝素(hep)与透明质酸钠(HA)和硫酸软骨素A钠盐(Chs)。从图2-7中可知,本发明所述吡啶盐荧光探针对肝素能够实现荧光检测,而对透明质酸钠(HA)和硫酸软骨素A钠盐(Chs)并不能产生明显的荧光效果。也就是说,本发明所述吡啶盐荧光探针对肝素具有特异性荧光响应。
应当理解的是,本发明的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)

1.一种吡啶盐荧光探针,其特征在于,所述吡啶盐荧光探针具有如下结构式:
其中,R1和R3分别独立地为卤代苯基、4-甲氧基苯基中的一种,R2为如下基团中的一种:
其中Me为甲基,虚线表示化学键连接位点。
2.根据权利要求1所述的吡啶盐荧光探针,其特征在于,所述吡啶盐荧光探针的结构式中,所述卤代苯基为溴代苯基。
3.根据权利要求2所述的吡啶盐荧光探针,其特征在于,所述卤代苯基为4-溴代苯基。
4.一种如权利要求1所述吡啶盐荧光探针的制备方法,其特征在于,包括以下步骤:
制备4-(1,2,2-三苯基乙烯基)苯甲醛;
在保护性气体氛围下,将4-(1,2,2-三苯基乙烯基)苯甲醛、苯基酮类化合物、第一溶剂和三氟化硼乙醚混合,加热反应制得到中间产物;将所述中间产物溶解在第二溶剂中,并加入胺类化合物,加热至80-100℃,反应制得到吡啶盐荧光探针。
5.根据权利要求4所述的吡啶盐荧光探针的制备方法,其特征在于,所述制备4-(1,2,2-三苯基乙烯基)苯甲醛的方法包括以下步骤:
将(2-溴乙烯-1,1,2-三基)三苯、(4-甲酰苯基)硼酸、碳酸钾和四(三苯基膦)钯混合,在保护性气体氛围下,加入1,4二氧六环和水,加热至80-120℃,反应得到4-(1,2,2-三苯基乙烯基)苯甲醛。
6.根据权利要求5所述的吡啶盐荧光探针的制备方法,其特征在于,所述保护性气体为氮气或惰性气体。
7.根据权利要求4所述的吡啶盐荧光探针的制备方法,其特征在于,所述苯基酮类化合物为1-(4-溴苯基)乙-1-酮、1-(3-溴苯基)乙-1-酮、1-(2-溴苯基)乙-1-酮、1-(4-甲氧基)乙-1-酮中的一种。
8.根据权利要求4所述的吡啶盐荧光探针的制备方法,其特征在于,所述胺类化合物为正戊胺、己烷-1-胺、苯胺、甘氨酸甲酯盐酸盐中的一种。
9.根据权利要求4或5所述的吡啶盐荧光探针的制备方法,其特征在于,所述第一溶剂为甲苯;所述第二溶剂为乙醇。
10.一种如权利要求1所述吡啶盐荧光探针在制备肝素检测荧光制剂中的应用。
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