CN110105379A - 一种具有荧光识别的Zn-MOFs配合物制备方法 - Google Patents
一种具有荧光识别的Zn-MOFs配合物制备方法 Download PDFInfo
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- 239000013094 zinc-based metal-organic framework Substances 0.000 title claims abstract description 35
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- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 12
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- 238000001914 filtration Methods 0.000 claims description 2
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- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 5
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- 238000002441 X-ray diffraction Methods 0.000 description 3
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- 229960000935 dehydrated alcohol Drugs 0.000 description 2
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- KZPYGQFFRCFCPP-UHFFFAOYSA-N 1,1'-bis(diphenylphosphino)ferrocene Chemical compound [Fe+2].C1=CC=C[C-]1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=C[C-]1P(C=1C=CC=CC=1)C1=CC=CC=C1 KZPYGQFFRCFCPP-UHFFFAOYSA-N 0.000 description 1
- XIOUDVJTOYVRTB-UHFFFAOYSA-N 1-(1-adamantyl)-3-aminothiourea Chemical compound C1C(C2)CC3CC2CC1(NC(=S)NN)C3 XIOUDVJTOYVRTB-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 229910007541 Zn O Inorganic materials 0.000 description 1
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- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 description 1
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Abstract
本发明公开了一种具有荧光识别的Zn‑MOFs配合物制备方法,其特点以2’‑羟基‑[1,1’:3’,1’’‑三苯基]‑3,3’,5,5’,5’’‑五羧酸盐(H5L‑OH)为配体与Zn(NO3)2•6H2O和0.5~2.0 v/vN,N‑二甲基甲酰胺水溶液按15~30mg:50~80mg:3mL重量体积比混合,并将其调至pH=5~6,超声30min后在90~110℃温度下反应40~60h,得淡黄色块状单斜晶体产物为Zn‑MOFs配合物。本发明与现有技术相比具有良好的荧光性能,制备工艺简单,效应时间快,产率高,成本低等优点,用于高灵敏度的Fe离子识别,具有广阔的应用前景。
Description
技术领域
本发明涉及Zn-MOFs配合物技术领域,具体地说是一种具有荧光识别的Zn-MOFs配合物制备方法。
背景技术
金属有机骨架材料是一类具有大比表面积、易于调节的孔道结构及良好的热稳定性的新材料,从而在气体吸附分离、催化及化学识别等方面引起了很大地关注。
金属离子的富集,特别是重金属离子的富集,对水和生物体有毒,危害人体健康。因此,微量重金属离子的检测也尤为重要。荧光分析方法是通过荧光信号表达对被分析物识别的检测方法,具有较高的灵敏度和选择性。
现有技术的Fe3+离子识别采用痕量重金属离子通过萃取、吸附、离子交换等手段分离富集后再进行分析,制备工艺复杂,收率低。
发明内容
本发明的目的是针对现有技术的不足而提供的一种具有荧光识别的Zn-MOFs配合物制备方法,采用羧酸配体与甲胺根阳离子、DMF分子和水分子配位,合成具有荧光性能的Zn-MOFs配合物,用于高灵敏度的Fe离子识别,该配合物具有三维框架结构的单斜晶系空间群,晶体结构中不对称单元包含两个Zn2+离子,一个完全质子化的羧酸配体,一个配位的水分子,一个甲胺根阳离子和三个溶剂DMF分子,其中,一个Zn2+是四配位,氧原子都来自于四个羧基的氧;另一个Zn2+采取五配位,四个氧来自于四个羧基氧,另一个氧来自于配位的水分子,二元锌簇通过Zn-O与羧基的不断重复,形成三维框架结构,制备工艺简单,用于高灵敏度的Fe3+离子识别,具有广阔的应用前景。
实现本发明目的的具体技术方案是:一种具有荧光识别的Zn-MOFs配合物制备方法,其特点以2’-羟基-[1,1’:3’,1”-三苯基]-3,3’,5,5’,5”-五羧酸(H5L-OH)为配体与Zn(NO3)2·6H2O和浓度为0.5~2v/v的N,N-二甲基甲酰胺水溶液按15~30mg:50~80mg:3mL重量体积比混合,其混合溶液用HBF4调至pH=5~6,超声30min后在90~110℃温度下反应40~60h,反应结束后以5℃/h冷却速率降至室温,得淡黄色块状单斜晶体产物为Zn-MOFs配合物,其分子式为[(CH3)2NH2]+[Zn2(L-OH)(H2O)]。
所述2’-羟基-[1,1’:3’,1”-三苯基]-3,3’,5,5’,5”-五羧酸配体按下述步骤制备:
a、(3,5-双(乙氧羰基)苯基)硼酸与1,1’-双(二苯基膦基)二茂铁二氯化钯(II)和甲基-4-羟基-3,5-二碘苯、碳酸钾按0.8~1.2mmol:0.05~0.1mmol:1.5~3mmol;3~6摩尔比混合,在80℃温度和氮气氛围下反应24~72小时,得产物为3,3’、5,5”-四乙基-5’-甲-2’-羟基-[1,1’:3’,1”-三苯基]-3,3’、5,5’,5”-五羧酸。
b、将上述制备的3,3’、5,5”-四乙基-5’-甲基-2’-羟基-[1,1’:3’,1”-三苯基]-3,3’、5,5’,5”-五羧酸与重量浓度为10~30%的氢氧化钠溶液和四氢呋喃按0.8~1.2mmol:10~30ml:40ml摩尔体积比混合,其混合溶液在40~80℃温度下回流12~36小时,反应结束后经过滤、干燥和重结晶,得如下结构式的产物为2’-羟基-[1,1’:3’,1”-三苯基]-3,3’,5,5’,5”-五羧酸配体:
本发明与现有技术相比具有良好的荧光性能,制备工艺简单,效应时间快,产率高,成本低等优点,用于高灵敏度的Fe3+离子识别,具有广阔的应用前景。
附图说明
图1为实施例2制备的Zn-MOFs中配体的配位模式图;
图2为实施例2制备的Zn-MOFs金属簇的结构图;
图3为实施例2制备的Zn-MOFsPXRD图;
图4为实施例2制备的Zn-MOFs热重图;
图5为实施例2制备的Zn-MOFs红外谱图;
图6为实施例2制备的Zn-MOFs固体荧光光谱图;
图7为实施例2制备的Zn-MOFs在乙醇溶液中的荧光激发光谱和发射光谱图;
图8为实施例2制备的Zn-MOFs在不同金属离子的乙醇中的相对荧光强度;
图9为实施例2制备的Zn-MOFs在不同浓度Fe3+的荧光光谱图;
图10为实施例2制备的Zn-MOFs的Stern-Volmer图。
具体实施方式
以下通过具体实施例对本发明作进一步的详细说明。
实施例1
本发明按下述步骤制备2’-羟基-[1,1':3’,1”-三苯基]-3,3’,5,5’,5”-五羧酸配体:
a、在氮气气氛下,称取1mmol(3,5-双(乙氧羰基)苯基)硼酸与0.1mmol 1,1'-双(二苯基膦基)二茂铁二氯化钯(II)、2mmol甲基-4-羟基-3,5-二碘苯和4mmol碳酸钾混合,在80℃温度和氮气氛围下反应48小时。反应结束后将其蒸干,并用乙酸乙酯萃取混合物,有机相用无水硫酸钠干燥完全,蒸干后得到的粗产物采用色谱柱分离提纯,得到1g淡黄色粉末产物为3,3’、5,5”-四乙基-5’-甲-2’-羟基-[1,1’:3’,1”-三苯基]-3,3’、5,5’,5”-五羧酸,其产率为68%。
b、取1mmol上述制备的3,3’、5,5”-四乙基-5’-甲-2’-羟基-[1,1’:3’,1”-三苯基]-3,3’、5,5’,5”-五羧酸与20ml重量浓度为20%的氢氧化钠溶液混合,并溶解在40ml四氢呋喃,其混合液在50℃温度下回流反应24小时,反应结束后除去有机溶剂,用乙酸乙酯萃取水相,收集水相后用盐酸调至pH=1,将得到的粘稠物抽干水后烘干,并用无水甲醇重结晶后干燥,得到0.66g产物为H5L-OH配体,其产率为83%。
实施例2
称取20mg上述制备的H5L-OH配体与64mg六水合硝酸锌和3mL体积比为1的N,N-二甲基甲酰胺水溶液混合,然后用HBF4调至pH=6,超声30min后在100℃温度下反应48h,反应结束后以5℃/h冷却速率降至室温,得淡黄色块状单斜晶体产物为Zn-MOFs配合物。
参阅附图1,实施例2制备的Zn-MOFs配合物经单晶X-射线衍射分析,得到配合物中不对称结构单元的配位模式。
参阅附图2,实施例2制备的Zn-MOFs配合物经单晶X-射线衍射分析,得到配合物中二元锌簇的配位模式。
参阅附图3,实施例2制备的Zn-MOFs配合物在常温下进行了粉末X-射线衍射表征(PXRD),可知实施例2制备的Zn-MOFs配合物的粉末X-射线衍射曲线与单晶数据模拟的粉末X-射线衍射曲线有较好的吻合,说明本实施例制备的Zn-MOFs配合物具有较高的纯度。
参阅附图4,实施例2制备的Zn-MOFs配合物经热重分析,在氮气气氛中以10℃/min的升温速度,从25℃逐渐升温至800℃,该配合物在25~367℃,失重约为35%,分别对应于三个DMF分子、一个配位的水分子及甲胺根阳离子;在367℃之后,骨架逐渐开始坍塌,首先失重2%,对应于配体中的羟基基团,接着失重40%,骨架完全坍塌。
参阅附图5,实施例2制备的Zn-MOFs配合物经红外光谱分析,在波数4000~500cm-1范围内记录数据,主要红外吸收峰(v/cm-1)为:3438,1620,1573,1556,1446,1418,1360,1352,1082,1043,780,723,663,638。其中3438cm-1左右为配体游离的羟基的伸缩振动吸收峰,1620cm-1和1418cm-1表明羧基完全质子化且存在两个羧基氧都发生配位,1082cm-1(C-N伸缩振动吸收峰)和780cm-1(N-H变形振动吸收峰)可以证明甲胺根阳离子的存在。
参阅附图6,实施例2制备的Zn-MOFs配合物经固体荧光测试,可知该配合物与配体在常温下的固体荧光吸收谱图相同,在469nm处有最大吸收峰(λex=330nm),但是,相对于配体的荧光,配合物的荧光由一定的淬灭,这可能归因于金属与配体发生配位后,配体与金属之间发生电荷转移导致荧光减弱。
参阅附图7,将2mg实施例2制备的Zn-MOFs配合物,研细后分散在3mL的无水乙醇中,测定配合物在乙醇中的激发光谱和发射光谱,表明配合物在乙醇中显示出较强的荧光,该配合物在乙醇在380nm和408nm处显示最大吸收峰,出现双峰的原因可能是配体中游离羟基的存在。
参阅附图8,将2mg实施例2制备的Zn-MOFs配合物,研细后分散在一定离子(Ag+,K+,Li+,Ca2+,Mg2+,Mn2+,Zn2+,Co2+,Cd2+,Ni2+,Al3+,Cr3+,Fe3+)浓度(1mM)的无水乙醇中,测得380nm处的吸收峰均发生一定的淬灭,然而只有Fe3+发生完全淬灭,结果表明Zn-MOFs配合物对Fe3+有很好地选择性。
参阅附图9,采用Fe3+对实施例2制备的Zn-MOFs配合物进行敏感性分析,当加入微量的Fe3+荧光强度就发生淬灭;当加入400ppm的Fe3+,淬灭效率就达到99%。
参阅附图10,在低浓度下,380nm处的荧光值与Fe3+浓度呈正相关,通过Stern-Volmer方程(I0/I=Ksv[Fe3+]+1)拟合计算其淬灭效率。
以上各实施例只是对本发明做进一步说明,并非用以限制本发明专利,凡为本发明等效实施,均应包含于本发明专利的权利要求范围之内。
Claims (2)
1.一种具有荧光识别的Zn-MOFs配合物制备方法,其特征在于以2’-羟基-[1,1’:3’,1”-三苯基]-3,3’,5,5’,5”-五羧酸(H5L-OH)为配体与Zn(NO3)2·6H2O和浓度为0.5~2v/v的N,N-二甲基甲酰胺水溶液按15~30mg:50~80mg:3mL重量体积比混合,其混合溶液用HBF4调至pH为5~6,超声30min后在90~110℃温度下反应40~60小时,反应结束后以5℃/h冷却速率降至室温,得淡黄色块状单斜晶体产物为Zn-MOFs配合物,其分子式为[(CH3)2NH2]+[Zn2(L-OH)(H2O)]。
2.根据权利要求1所述具有荧光识别的Zn-MOFs配合物制备方法,其特征在于所述2’-羟基-[1,1’:3’,1”-三苯基]-3,3’,5,5’,5”-五羧酸配体按下述步骤制备:
a、(3,5-双(乙氧羰基)苯基)硼酸与1,1’-双(二苯基膦基)二茂铁二氯化钯(II)和甲基-4-羟基-3,5-二碘苯、碳酸钾按照0.8~1.2mmol:0.05~0.1mmol:1.5~3mmol:3~6mmol摩尔比混合,在80℃温度和氮气氛围下反应24~72小时,得产物为3,3’、5,5”-四乙基-5’-甲-2’-羟基-[1,1’:3’,1”-三苯基]-3,3’、5,5’,5”-五羧酸;
b、将上述制备的3,3’、5,5”-四乙基-5’-甲基-2’-羟基-[1,1’:3’,1”-三苯基]-3,3’、5,5’,5”-五羧酸与重量浓度为10~30%的氢氧化钠溶液和四氢呋喃按0.8~1.2mmol:10~30ml:40ml摩尔体积比混合,其混合溶液在40~80℃温度下回流12~36小时,反应结束后经过滤、干燥和重结晶,得如下结构式的产物为2’-羟基-[1,1’:3’,1”-三苯基]-3,3’,5,5’,5”-五羧酸配体:
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112142764A (zh) * | 2020-09-30 | 2020-12-29 | 渤海大学 | 一种锌配合物及其合成和在荧光识别Fe3+离子的方法 |
CN113402727A (zh) * | 2021-06-30 | 2021-09-17 | 云南师范大学 | 一种铽(ⅲ)负载的锌基金属有机框架及其制备与应用 |
CN116284809A (zh) * | 2022-12-26 | 2023-06-23 | 西安工程大学 | 基于v-型不对称五羧酸配体的金属-有机框架材料、制法及应用 |
-
2019
- 2019-05-28 CN CN201910448955.6A patent/CN110105379A/zh active Pending
Non-Patent Citations (2)
Title |
---|
LING LI等: ""Novel luminescent metal–organic frameworks based on rigid carboxylate ligands for highly selective sensing of Fe3+ ions"", 《CRYSTENGCOMM》 * |
ZHIYONG LU等: ""A Free Tetrazolyl Decorated Metal-Organic Framework Exhibiting High and Selective CO2 Adsorption"", 《INORG.CHEM.》 * |
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CN112142764B (zh) * | 2020-09-30 | 2023-09-05 | 渤海大学 | 一种锌配合物及其合成和在荧光识别Fe3+离子的方法 |
CN113402727A (zh) * | 2021-06-30 | 2021-09-17 | 云南师范大学 | 一种铽(ⅲ)负载的锌基金属有机框架及其制备与应用 |
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