CN116297353A - 一种二茂铁甲醛氨基脲Schiff碱特异性识别Cu2+和Fe3+ - Google Patents
一种二茂铁甲醛氨基脲Schiff碱特异性识别Cu2+和Fe3+ Download PDFInfo
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Abstract
一种二茂铁甲醛氨基脲Schiff碱特异性识别Cu2+和Fe3+。将二茂铁甲醛氨基脲Schiff碱用溶剂配置成待测液。向待测液加入阳离子,并通过荧光光谱来识别Cu2+和Fe3+,发现对Cu2+和Fe3+离子有很好的灵敏响应;可以实现对Cu2+和Fe3+离子的快速检测;同时具有较强的抗干扰能力,且含二茂铁甲醛氨基脲Schiff碱可以更好地识别及检测环境中的Cu2+和Fe3+。
Description
技术领域
本发明属于化学合成以及二茂铁甲醛氨基脲Schiff碱作为识别受体的荧光探针,其可对Cu2+和Fe3+高选择性识别,具有良好的抗干扰能力。具体涉及一种二茂铁甲醛氨基脲Schiff碱特异性识别Cu2+和Fe3+。
背景技术
Fe和Cu是构成蛋白、细胞色素和多种酶的基本元素,在新陈代谢中起着重要的作用。这些离子的失衡会对人体健康造成很大的威胁,可导致各种严重的病变。Cu的摄取异常会导致代谢紊乱和神经退行性疾病,如威尔逊病、帕金森病阿尔茨海默症以及门克斯综合症。Fe的缺乏会引起贫血、肝肾损害、心力衰竭和糖尿病等;而Fe含量超标会导致组织炎症、多器官的损伤。此外,在工业或者生活污水中的铁、铜含量过高会造成严重的环境污染。因此,Fe3+/Cu2+对环境的污染和人体健康的危害日益受到了人们的广泛关注虽然现代仪器分析手段可以很成熟地检测环境中的金属离子,但由于试样处理步骤复杂繁琐,不利于生物试样中金属离子的实时检测。荧光探针技术以其简便、高效的特点在离子检测中具有明显的优势。
发明内容
为了克服上述现有技术的不足,本发明的目的是提供一种二茂铁甲醛氨基脲Schiff碱特异性识别Cu2+和Fe3+,引入发色基团,通过荧光对Cu2+和Fe3+识别。
为达到上述目的,本发明采用的技术方案是:
一种含二茂铁甲醛氨基脲Schiff碱应用于检测Cu2+和Fe3+离子的方法,包括如下步骤:
步骤1)将1-(取代)苯基-3-二茂铁烯酮配成浓度为1×10-4mol/L的待测溶液;
2)配制阳离子溶液;
将阳离子溶液和待测溶液混合,得到检测溶液,通过荧光检测Cu2+和Fe3+。
所述的阳离子为Al3+,Sn2+,Zn2+,Cu2+,Mn2+,Fe2+,Li+,Ca2+,K+,Fe3+,Co2+,La3+,Ho3+,Pb2+,Bi3+,Ni2+。
所述的阳离子溶液和待测溶液混合时,阳离子溶液的浓度为1×10-2mol/L;待测溶液的浓度为1×10-4mol/L。
与现有技术相比,本发明具有以下有益效果:
本发明提供的一种二茂铁甲醛氨基脲Schiff碱特异性识别Cu2+和Fe3+,通过荧光光谱来识别Cu2+和Fe3+,发现对Cu2+和Fe3+离子有很好的灵敏响应;可以实现对Cu2+和Fe3+离子的快速检测;同时具有较强的抗干扰能力,且含二茂铁甲醛氨基脲Schiff碱可以更好地识别及检测环境中的Cu2+和Fe3+。
附图说明
图1为二茂铁甲醛氨基脲Schiff碱对Cu2+选择性识别荧光光谱;
图2为二茂铁甲醛氨基脲Schiff碱对Fe3+选择性识别荧光光谱;
图3为二茂铁甲醛氨基脲Schiff碱对Cu2+离子的抗干扰性;
图4为二茂铁甲醛氨基脲Schiff碱对Fe3+离子的抗干扰性;
图5为时间对二茂铁甲醛氨基脲Schiff碱的荧光强度的影响;
具体实施方式
下面结合附图对本发明做进一步详细描述:
实施例1二茂铁甲醛氨基脲Schiff碱对Cu2+离子的选择性检测
二茂铁甲醛氨基脲Schiff碱采用(CH3OH:H2O=6:4)溶解,配置成浓度为1×10- 4mol/L的待测液,超声。将AlCl3,SnCl2·2H2O,ZnCl2,MnCl2·2H2O,FeCl2,LiCl,CaCl2·2H2O,KCl,CoCl2·6H2O,La(NO3)3·6H2O,Ho(NO3)3·6H2O,Pb(NO3)2,NiSO4·6H2O,Bi(NO3)3·5H2O等阳离子盐,采用超纯水配置为1×10-2mol/L的阳离子溶液,待用。用移液枪准确量取3mL二茂铁甲醛氨基脲Schiff碱的待测液于16个样品管中,留出一个样品管作空白对照样,其余15个待测液中用移液枪分别加入30μl上述15种测试阳离子溶液,将这16组样品超声振荡,静置使其分散均匀,之后测试二茂铁甲醛氨基脲Schiff碱的荧光光谱。从图1可以看出,激发波长为333nm,在372nm出现吸收峰,加入Cu2+离子后372nm处的荧光强度减弱,与其它阳离子相比荧光强度降低;说明了二茂铁甲醛氨基脲Schiff碱可以选择性识别Cu2+离子。
实施例2二茂铁甲醛氨基脲Schiff碱对Fe3+离子的选择性检测
二茂铁甲醛氨基脲Schiff碱采用(CH3OH:H2O=6:4)溶解,配置成浓度为1×10- 4mol/L的待测液,超声。将AlCl3,SnCl2·2H2O,ZnCl2,MnCl2·2H2O,FeCl2,LiCl,CaCl2·2H2O,KCl,FeCl3·6H2O,CoCl2·6H2O,La(NO3)3·6H2O,Ho(NO3)3·6H2O,Pb(NO3)2,NiSO4·6H2O,Bi(NO3)3·5H2O等阳离子盐,采用超纯水配置为1×10-2mol/L的阳离子溶液,待用。用移液枪准确量取3mL二茂铁甲醛氨基脲Schiff碱的待测液于16个样品管中,留出一个样品管作空白对照样,其余15个待测液中用移液枪分别加入30μl上述15种测试阳离子溶液,将这16组样品超声振荡,静置使其分散均匀,之后测试二茂铁甲醛氨基脲Schiff碱的荧光光谱。从图2可以看出,激发波长为333nm,在372nm出现吸收峰,加入Fe3+离子后372nm荧光发生猝灭,与其它阳离子相比荧光强度降低;说明了二茂铁甲醛氨基脲Schiff碱可以选择性识别Fe3+离子。
实施例3二茂铁甲醛氨基脲Schiff碱对Cu2+离子的竞争性检测
二茂铁甲醛氨基脲Schiff碱采用(CH3OH:H2O=6:4)溶解,配置成浓度为1×10- 4mol/L的待测液,超声。将AlCl3,SnCl2·2H2O,ZnCl2,MnCl2·2H2O,FeCl2,LiCl,CaCl2·2H2O,KCl,CoCl2·6H2O,La(NO3)3·6H2O,Ho(NO3)3·6H2O,Pb(NO3)2,NiSO4·6H2O,Bi(NO3)3·5H2O等阳离子盐,采用超纯水配置为1×10-2mol/L的阳离子溶液,待用。用移液枪分别准确量取3mL探针二茂铁甲醛氨基脲Schiff碱待测液于16个样品管中,留出一组做空白对照样,其余15个待测液中用移液枪分别加入30μL配置好的阳离子溶液,然后再向样品管中加入30μLCu2+离子,将这所有溶液样品超声振荡,静置使其分散均匀,之后测量其荧光光谱。从图3中可以看出,当滴加15种阳离子溶液的荧光强度与二茂铁甲醛氨基脲Schiff碱待测液的吸收度相近,只有Cu2+离子的荧光强度减弱,这说明二茂铁甲醛氨基脲Schiff碱待测液可以选择性识别Cu2+离子;当向二茂铁甲醛氨基脲Schiff碱加入阳离子溶液之后再次加入Cu2+离子溶液,从图3中可以看出,在372nm的荧光强度明显降低。说明二茂铁甲醛氨基脲Schiff碱对Cu2+有很好的特异性识别作用,其他离子对其选择性识别作用没有干扰,能够应用于实际检测。
实施例4二茂铁甲醛氨基脲Schiff碱对Fe3+的抗干扰性检测
二茂铁甲醛氨基脲Schiff碱采用(CH3OH:H2O=6:4)溶解,配置成浓度为1×10- 4mol/L的待测液,超声。将AlCl3,SnCl2·2H2O,ZnCl2,MnCl2·2H2O,FeCl2,LiCl,CaCl2·2H2O,KCl,FeCl3·6H2O,CoCl2·6H2O,La(NO3)3·6H2O,Ho(NO3)3·6H2O,Pb(NO3)2,NiSO4·6H2O,Bi(NO3)3·5H2O等阳离子盐,采用超纯水配置为1×10-2mol/L的阳离子溶液,待用。用移液枪分别准确量取3mL探针二茂铁甲醛氨基脲Schiff碱待测液于16个样品管中,留出一组做空白对照样,其余15个二茂铁甲醛氨基脲Schiff碱待测液中用移液枪分别加入30μL配置好的阳离子溶液,然后再向样品管中加入30μLFe3+离子,将这所有溶液样品超声振荡,静置使其分散均匀,之后测量其荧光光谱。从图4中可以看出,当滴加15种阳离子溶液的荧光强度与二茂铁甲醛氨基脲Schiff碱待测液的吸收度相近,只有Fe3+离子的荧光强度发生猝灭,这说明二茂铁甲醛氨基脲Schiff碱待测液可以选择性识别Fe3+离子;当向二茂铁甲醛氨基脲Schiff碱加入阳离子溶液之后再次加入Fe3+离子溶液,从图4中可以看出,在372nm的荧光强度明显降低。说明二茂铁甲醛氨基脲Schiff碱对Fe3+有很好的特异性识别作用,其他离子对其选择性识别作用没有干扰,能够应用于实际检测。
实施例5二茂铁甲醛氨基脲Schiff碱的动力学研究
为了验证二茂铁甲醛氨基脲Schiff碱实际应用能力,在室温下研究二茂铁甲醛氨基脲Schiff碱在检测过程中荧光强度随时间的变化,如图5所示,二茂铁甲醛氨基脲Schiff碱((CH3OH:H2O=6:4),1×10-4mol/L)在0-70min内,在372nm荧光强度基本保持不变。加入Cu2+离子后在0-80min内荧光强度基本保持不变,加入Fe3+离子后在0-80min内荧光强度增加。这一结果清楚地说明二茂铁甲醛氨基脲Schiff碱在0-80min内可以进行快速检测Cu2+和Fe3+。
本发明公开了一种二茂铁甲醛氨基脲Schiff碱特异性识别Cu2+和Fe3+。将二茂铁甲醛氨基脲Schiff碱用溶剂配置成待测液。向待测液加入阳离子,并通过荧光光谱来识别Cu2+和Fe3+,发现对Cu2+和Fe3+离子有很好的灵敏响应;可以实现对Cu2+和Fe3+离子的快速检测;同时具有较强的抗干扰能力,且含二茂铁甲醛氨基脲Schiff碱可以更好地识别及检测环境中的Cu2+和Fe3+。
Claims (5)
1.一种二茂铁甲醛氨基脲Schiff碱特异性识别Cu2+和Fe3+,其特征在于,包括如下步骤:
将二茂铁甲醛氨基脲Schiff碱配成浓度为1×10-4mol/L的待测溶液;将阳离子溶液和待测溶液混合,得到检测溶液,观察检测溶液的在365nm紫外灯下的颜色变化,基于检测溶液的颜色变化识别阳离子溶液中是否有Cu2+和Fe3+并通过荧光检测Cu2+和Fe3+。
3.根据权利要求1所述的一种二茂铁甲醛氨基脲Schiff碱特异性识别Cu2+和Fe3+,其特征在于,所述的阳离子为Sn2+,Zn2+,Cu2+,Mn2+,Fe2+,Li+,Ca2+,K+,Fe3+,Co2+,La3+,Ho3+,Pb2+,Bi3+,Ni2+。
4.根据权利要求1所述的一种二茂铁甲醛氨基脲Schiff碱特异性识别Cu2+和Fe3+,其特征在于,当所检测样品含有Cu2+和Fe3+离子时,含二茂铁甲醛氨基脲Schiff碱的化合物的溶液体系的荧光强度降低。
5.根据权利要求1所述的一种二茂铁甲醛氨基脲Schiff碱特异性识别Cu2+和Fe3+,其特征在于,对Al3+,Sn2+,Zn2+,Mn2+,Fe2+,Li+,Ca2+,K+,Co2+,La3+,Ho3+,Pb2+,Bi3+,Ni2+离子具有抗干扰能力。
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