CN115627082A - 一种D-A-π-A型苯并噻二唑类功能染料及其制备方法与应用 - Google Patents
一种D-A-π-A型苯并噻二唑类功能染料及其制备方法与应用 Download PDFInfo
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- CN115627082A CN115627082A CN202211287527.8A CN202211287527A CN115627082A CN 115627082 A CN115627082 A CN 115627082A CN 202211287527 A CN202211287527 A CN 202211287527A CN 115627082 A CN115627082 A CN 115627082A
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- JHUUPUMBZGWODW-UHFFFAOYSA-N 3,6-dihydro-1,2-dioxine Chemical compound C1OOCC=C1 JHUUPUMBZGWODW-UHFFFAOYSA-N 0.000 description 3
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- DQXKOHDUMJLXKH-PHEQNACWSA-N (e)-n-[2-[2-[[(e)-oct-2-enoyl]amino]ethyldisulfanyl]ethyl]oct-2-enamide Chemical compound CCCCC\C=C\C(=O)NCCSSCCNC(=O)\C=C\CCCCC DQXKOHDUMJLXKH-PHEQNACWSA-N 0.000 description 2
- UHKAJLSKXBADFT-UHFFFAOYSA-N 1,3-indandione Chemical compound C1=CC=C2C(=O)CC(=O)C2=C1 UHKAJLSKXBADFT-UHFFFAOYSA-N 0.000 description 2
- JKLZCQWVERBDEZ-UHFFFAOYSA-N 3-methyl-2-sulfanylidene-1,3-thiazolidin-4-one Chemical compound CN1C(=O)CSC1=S JKLZCQWVERBDEZ-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
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- YJVFFLUZDVXJQI-UHFFFAOYSA-L palladium(ii) acetate Chemical compound [Pd+2].CC([O-])=O.CC([O-])=O YJVFFLUZDVXJQI-UHFFFAOYSA-L 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 150000003384 small molecules Chemical class 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
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- C07D285/01—Five-membered rings
- C07D285/02—Thiadiazoles; Hydrogenated thiadiazoles
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Abstract
Description
技术领域
本发明属于光学材料技术领域,具体涉及一种D-A-π-A型苯并噻二唑类功能染料的制备方法及应用。
背景技术
近年来,以苯并噻二唑及其衍生物为核心骨架的新型功能染料分子被广泛应用于生物化学、病理学、光声成像及光热成像等领域。苯并噻二唑结构单元表现出诸多优异特性,包括优异的光学稳定性和强吸电子能力,被广泛用于构筑功能性染料分子,使该类分子具有较高的电子离域,强的分子内电荷转移和大斯托克斯位移等特点。
在扩展小分子共轭结构基础上,具有推拉结构的有机荧光小分子通常产生较大的斯托克斯位移,能更好地实现发光性能的调控。因此,设计合成经典的供体-受体(D-A)型共轭体系,是构建功能染料分子一种重要策略,其结构一般由供体和受体两部分通过扩展的共轭体系连接而成,在光激发下诱导富电子单元与缺电子片段之间发生分子内电荷转移。相比于经典D-A型苯并噻二唑结构单元,进一步引入π桥和受体单元,构建新型D-A-π-A型分子将产生更大的共轭体系并增加电子迁移距离,有望拓展苯并噻二唑类功能染料在光学方面的更多应用。
发明内容
本发明的内容是提供一种D-A-π-A型苯并噻二唑类功能染料及其制备方法与应用。该类以苯并噻二唑为母体的结构单元分子具有大斯托克斯位移、强的组织穿透能力,和优异三阶非线性光学性能等众多优势。
为实现上述发明目的,本发明提供以下技术方案:
本发明提供了一种D-A-π-A型苯并噻二唑功能染料,所述的D-A-π-A 型苯并噻二唑类功能染料分子的结构通式,如式(Ⅰ)所示,
进一步,所述的D-A-π-A型苯并噻二唑功能染料,优选为:
本发明还提供了上述技术方案所述的D-A-π-A型苯并噻二唑功能染料的制备方法,包括如下步骤:
(1)Suzuki偶联反应-I
4,7-二溴-2,1,3-苯并噻二唑与含醛基的化合物M发生Suzuki偶联反应。
在氮气保护下,在碱A和钯催化剂A的作用下,式(II)所示的4,7-二溴-2,1,3-苯并噻二唑与化合物M于溶剂A和溶剂B的混合溶剂中,在60~150℃下进行Suzuki偶联反应,得到式(III)所示的中间体;
(2)Suzuki偶联反应-II
在氮气保护下,式(III)所示的中间体加入溶剂A和溶剂B的混合溶剂中,在碱A、钯催化剂A的作用下,与4-硼酸三苯胺在60~150℃下进行Suzuki 偶联反应,得到式(IV)所示的苯并噻二唑衍生物;
(3)Knoevenagel缩合反应
在氮气保护下,式(Ⅳ)所示的苯并噻二唑衍生物加入溶剂C中,在催化剂B的作用下与R2-H在25~100℃下进行Knoevenagel缩合反应,得到式 (Ⅴ)所示的苯并噻二唑功能染料。
作为优选,步骤(1)中所述溶剂A为N,N-二甲基甲酰胺、N,N-二甲基乙酰胺、二甲基亚砜、甲苯、1,4-二氧六环或四氢呋喃,溶剂B为纯水,碱 A为碳酸氢钠、氢氧化钾、碳酸钠、碳酸钾或碳酸铯,所述的式(II)所示的4,7-二溴-2,1,3-苯并噻二唑、化合物M、碱A和钯催化剂A的摩尔比为1: 0.3~1:0.05~3:0.01~0.1,溶剂A和溶剂B的体积比为1~5:1,所述偶联反应时间为10~20h,反应温度为60~150℃,所述的有机溶剂A的体积用量以式(II)所示的4,7-二溴-2,1,3-苯并噻二唑的质量计为20~50mL/g。
作为优选,步骤(2)中所述溶剂A为N,N-二甲基甲酰胺、N,N-二甲基乙酰胺、二甲基亚砜、甲苯、1,4-二氧六环或四氢呋喃,溶剂B为水,碱A 为碳酸氢钠、氢氧化钾、碳酸钠、碳酸钾或碳酸铯,所述的式(Ⅲ)所示的中间体、4-硼酸三苯胺、碱A和钯催化剂A的摩尔比为1:1~4:1~4:0.01~0.08,溶剂A和溶剂B的体积比为1~5:1,所述偶联反应时间为10~20h,反应温度为60~150℃,所述的有机溶剂A的体积用量以式(Ⅲ)所示的中间体质量计为20~50mL/g。
作为优选,步骤(3)中所述溶剂C为氯仿、1,2-二氯乙烷、甲苯、二氯甲烷、无水乙醇,催化剂B为三乙胺、甲醇钠、苯胺、醋酸铵,所述缩合反应时间为1~10h,反应温度为25~100℃,所述的式(Ⅳ)所示的中间体、R2-H、催化剂B的摩尔比为1:1~5:4~20,所述的溶剂C的体积用量以式(Ⅳ) 所示的中间体质量计为20~50mL/g。
本发明提供了上述技术方案所述的D-A-π-A型苯并噻二唑类功能染料在有机发光二极管的发光层中的应用。
本发明还提供了上述技术方案所述的D-A-π-A型苯并噻二唑功能染料在非线性光学中的应用。
与现有技术相比,本发明具有如下优点:
本发明提供了一种D-A-π-A型苯并噻二唑功能染料,具有式Ⅰ所示结构。本发明以苯并噻二唑为母环,三苯胺为电子供体,引入不同π桥以及不同吸电子基团R2,扩展分子的共轭体系和电荷转移范围,减小分子的能带隙,使所得苯并噻二唑功能染料的紫外吸收光谱和荧光发射光谱产生较大红移,在荧光发射光谱中在红光范围内有着较强的发射峰,因此其在有机发光二极管和非线性光学领域具有很好的应用潜力。
附图说明
图1为本发明化合物I-1~I-7的紫外-可见吸收光谱图;
图2为本发明化合物I-1~I-7的荧光发射光谱图;
图3为本发明实施例5所得化合物Ⅰ-1的非线性开孔Z-扫描曲线,其中黑色空心点为实验室数据,实线为拟合数据;
图4为本发明实施例9所得化合物Ⅰ-5的非线性开孔Z-扫描曲线,其中黑色空心点为实验室数据,实线为拟合数据;
图5为本发明实施例1所得化合物I-1的核磁共振氢谱;
图6为本发明实施例2所得化合物I-2的核磁共振氢谱;
图7为本发明实施例3所得化合物I-3的核磁共振氢谱;
图8为本发明实施例4所得化合物I-4的核磁共振氢谱;
图9为本发明实施例5所得化合物I-5的核磁共振氢谱;
图10为本发明实施例6所得化合物I-6的核磁共振氢谱;
图11为本发明实施例7所得化合物I-7的核磁共振氢谱。
具体实施方式
下面结合具体实施例对本发明进行进一步描述,但本发明的保护范围并不仅限于此:
实施例1
(1)Suzuki偶联反应-Ⅰ
将4,7-二溴-2,1,3-苯并噻二唑(2.35g,8mmol),4-甲酰基苯硼酸(1.2g, 8mmol),碳酸钾(2.2g,16mmol)和四(三苯基膦)钯(0.9g,0.8mmol)加入到500ml圆底烧瓶中,加入180mL四氢呋喃和60mL的纯水,在80℃下磁力搅拌反应,反应12h后停止。待冷却后,将所述偶联反应所得反应液与二氯甲烷、水混合进行萃取,将所得的有机相依次经洗涤和干燥后,蒸馏去除溶剂,将所得残余物进行硅胶柱层析提纯(V(石油醚)/V(二氯甲烷)=1/1) 得到浅黄色固体化合物Ⅲ-1为0.8g,收率30%。
(2)Suzuki偶联反应-Ⅱ
将中间体Ⅲ-1(0.7g,2.2mmol),4-硼酸三苯胺(1.3g,4.4mmol),碳酸钾(1.2g,8.8mmol)和四(三苯基膦)钯(0.15g,0.13mmol)加入到150ml 圆底烧瓶中,加入90mL四氢呋喃和30mL的纯水,在80℃下磁力搅拌反应,反应12h后停止。待冷却后,将所述偶联反应所得反应液与二氯甲烷、水混合进行萃取,将所得的有机相依次经洗涤和干燥后,蒸馏去除溶剂,将所得残余物进行硅胶柱层析提纯(V(石油醚)/V(二氯甲烷)=1/1)得到橘色固体化合物Ⅳ-1为0.8g,收率76%。
(3)Knoevenagel缩合反应
将中间体Ⅳ-1(0.5g,1.0mmol),3-甲基罗丹宁(0.18g,1.3mmol)和醋酸铵(1.5g,20mmol)溶解于80ml 1,2-二氯乙烷中,使反应液脱气十分钟。将反应混合物在80℃下搅拌反应12h。将反应液冷却至室温,所得反应液与二氯甲烷、水混合进行萃取,将所得的有机相依次经洗涤和干燥后,蒸馏去除溶剂,将所得残余物进行硅胶柱层析提纯(V(石油醚)/V(二氯甲烷)=1/1) 得到红色固体产品Ⅰ-1有380mg,收率为63%。
化合物Ⅰ-1的表征数据如下:
1H NMR(400MHz,CDCl3):δ8.15(d,2H),δ7.90(d,2H),δ7.85(d,1H),δ7.83(s,1H),δ7.79(d,1H),δ7.69(d,2H),δ7.30(t,4H),δ7.21 (t,6H),δ7.08(t,2H),δ3.56(d,3H).
13C NMR(400MHz,CDCl3),δ:193.38,167.90,154.11,148.39,147.39, 133.92,132.99,132.62,130.97,130.42,130.02,129.99,129.41,128.68, 127.09,125.06,123.50,123.42,122.65,31.30.
HRMS(ESI):m/z:Calcd for[C35H24N4OS3+H+]532.15904,found 532.1579.
实施例2
(1)Suzuki偶联反应-Ⅰ
将4,7-二溴-2,1,3-苯并噻二唑(2.35g,8mmol),4-甲酰基苯硼酸(1.2g, 8mmol),碳酸钾(2.2g,16mmol)和四(三苯基膦)钯(0.9g,0.8mmol)加入到500ml圆底烧瓶中,加入180mL1,4-二氧六环和60mL的纯水,在80℃下磁力搅拌反应,反应12h后停止。待冷却后,将所述偶联反应所得反应液与二氯甲烷、水混合进行萃取,将所得的有机相依次经洗涤和干燥后,蒸馏去除溶剂,将所得残余物进行硅胶柱层析提纯(V(石油醚)/V(二氯甲烷)=1/1)得到浅黄色固体化合物Ⅲ-1为0.8g,收率30%。
(2)Suzuki偶联反应-Ⅱ
将中间体Ⅲ-1(0.7g,2.2mmol),4-硼酸三苯胺(1.3g,4.4mmol),碳酸钾(1.2g,8.8mmol)和四(三苯基膦)钯(0.15g,0.13mmol)加入到150ml 圆底烧瓶中,加入90mL1,4-二氧六环和30mL的纯水,在80℃下磁力搅拌反应,反应12h后停止。待冷却后,将所述偶联反应所得反应液与二氯甲烷、水混合进行萃取,将所得的有机相依次经洗涤和干燥后,蒸馏去除溶剂,将所得残余物进行硅胶柱层析提纯(V(石油醚)/V(二氯甲烷)=1/1)得到橘色固体化合物Ⅳ-1为0.8g,收率76%。
(3)Knoevenagel缩合反应
将中间体Ⅳ-1(0.4g,0.83mmol),1,3-茚二酮(0.5g,3.3mmol)溶解在于85ml氯仿中。将2ml三乙胺滴加入反应溶液中,在氮气保护条件下于 55℃搅拌回流24h。将反应混合物用水淬灭,用氯仿萃取。有机提取物用水、盐水洗涤,然后用无水硫酸镁干燥,蒸发去除溶剂,用硅胶柱层析纯化(V(石油醚)/V(二氯甲烷)=1/1),得到暗红色固体产品Ⅰ-2有380mg,收率76%。
化合物Ⅰ-2的表征数据如下:
1H NMR(400MHz,CDCl3):δ8.66(d,2H),δ8.19(d,2H),δ8.04 (t,2H),δ7.98(s,1H),δ7.90(q,3H),δ7.82(q,3H),δ7.31(t, 4H),δ7.21(t,6H),δ7.08(t,2H).
13C NMR(400MHz,CDCl3),δ:190.39,189.12,154.10,153.93,148.36, 147.40,146.26,142.61,142.11,140.14,135.45,135.25,134.60,133.98, 132.88,131.09,130.46,130.06,128.95,127.14,125.07,123.51,123.37, 122.67.
HRMS(ESI):m/z:Calcd for[C40H25N3O2S+Na+]634.15597,found 634.1541.
实施例3
(1)Suzuki偶联反应-Ⅰ
将4,7-二溴-2,1,3-苯并噻二唑(2.35g,8mmol),4-甲酰基苯硼酸(1.2g, 8mmol),碳酸钾(2.2g,16mmol)和1,1-双(二苯基膦)二荗铁二氯化钯(0.58 g,0.8mmol)加入到500ml圆底烧瓶中,加入180mL甲苯和60mL的纯水,在80℃下磁力搅拌反应,反应12h后停止。待冷却后,将所述偶联反应所得反应液与二氯甲烷、水混合进行萃取,将所得的有机相依次经洗涤和干燥后,蒸馏去除溶剂,将所得残余物进行硅胶柱层析提纯(V(石油醚)/V(二氯甲烷)=1/1)得到浅黄色固体化合物Ⅲ-1为0.8g,收率30%。
(2)Suzuki偶联反应-Ⅱ
将中间体Ⅲ-1(0.7g,2.2mmol),4-硼酸三苯胺(1.3g,4.4mmol),碳酸钾(1.2g,8.8mmol)和1,1-双(二苯基膦)二荗铁二氯化钯(0.09g,0.13mmol) 加入到150ml圆底烧瓶中,加入90mL甲苯和30mL的纯水,在80℃下磁力搅拌反应,反应12h后停止。待冷却后,将所述偶联反应所得反应液与二氯甲烷、水混合进行萃取,将所得的有机相依次经洗涤和干燥后,蒸馏去除溶剂,将所得残余物进行硅胶柱层析提纯(V(石油醚)/V(二氯甲烷)=1/1) 得到橘色固体化合物Ⅳ-1为0.8g,收率76%。
(3)Knoevenagel缩合反应
将Ⅳ-1(0.3g,0.6mmol)、苯乙腈(0.3g,2.4mmol)和甲醇钠(0.05 g,0.9mmol)加入90ml无水乙醇溶液中,在室温下搅拌1h。反应完成后将混合物过滤,沉淀物用乙醇洗涤,用硅胶柱层析纯化(V(石油醚)/V(二氯甲烷)=1/1),得到所需的亮橙色固体产品Ⅰ-3有252mg,收率72%。
化合物Ⅰ-3的表征数据如下:
1H NMR(400MHz,CDCl3):δ8.13(d,2H),δ8.09(d,2H),δ7.90 (d,2H),δ7.86(d,1H),δ7.80(d,1H),δ7.73(d,2H),δ7.62(s, 1H),δ7.48(t,2H),δ7.42(t,1H),δ7.31(t,4H),δ7.21(t,6H),δ7.08(t,2H).
13C NMR(400MHz,CDCl3),δ:154.10,153.99,148.28,147.42,141.53, 141.38,139.53,134.52,133.59,133.45,131.26,130.58,130.00,129.39, 129.28,129.11,128.52,127.48,127.16,126.05,125.01,123.43,122.72, 118.07,111.78.
HRMS(ESI):m/z:Calcd for[C39H26N4S+Na+]605.17704,found 605.1763.
实施例4
(1)Suzuki偶联反应-Ⅰ
将4,7-二溴-2,1,3-苯并噻二唑(7.64g,26mmol),5-甲酰基-2-呋喃硼酸 (3.28g,23.4mmol),碳酸钾(7.19g,52mmol)和醋酸钯(1.2g,5.2mmol) 加入到1000ml圆底烧瓶中,加入480mL甲苯和160mL的纯水,在80℃下磁力搅拌反应,反应12h后停止。待冷却后,将所述偶联反应所得反应液与二氯甲烷、水混合进行萃取,将所得的有机相依次经洗涤和干燥后,蒸馏去除溶剂,将所得残余物进行硅胶柱层析提纯(V(石油醚)/V(二氯甲烷)=1/1) 得到黄色固体化合物Ⅲ-2为3g,收率42%。
(2)Suzuki偶联反应-Ⅱ
将中间体Ⅲ-2(3.0g,9.7mmol),4-硼酸三苯胺(5.6g,19.4mmol),碳酸钾(5.4g,38.8mmol)和醋酸钯(04g,1.9mmol)加入到500ml圆底烧瓶中,加入290mL甲苯和97mL的纯水,在80℃下磁力搅拌反应,反应12 h后停止。待冷却后,将所述偶联反应所得反应液与二氯甲烷、水混合进行萃取,将所得的有机相依次经洗涤和干燥后,蒸馏去除溶剂,将所得残余物进行硅胶柱层析提纯(V(石油醚)/V(二氯甲烷)=1/1)得到橘色固体化合物Ⅳ-2为2.8g,收率62%。
(3)Knoevenagel缩合反应
将中间体Ⅳ-2(0.16g,0.3mmol),3-甲基罗丹宁(0.06g,0.4mmol)和醋酸铵(2.6g,34mmol)溶解于40ml 1,2-二氯乙烷中,使反应液脱气十分钟。将反应混合物在80℃下搅拌反应12h。将反应液冷却至室温,所得反应液与二氯甲烷、水混合进行萃取,将所得的有机相依次经洗涤和干燥后,蒸馏去除溶剂,将所得残余物进行硅胶柱层析提纯(V(石油醚)/V(二氯甲烷)=1/1) 得到黑色固体产品Ⅰ-4有150mg,收率为83%。
化合物Ⅰ-4的表征数据如下:
1H NMR(400MHz,CDCl3):δ8.23(d,1H),δ7.94(t,3H),δ7.88 (d,1H),δ7.57(s,1H),δ7.31(t,4H),δ7.22(t,6H),δ7.10(q, 3H),δ3.56(s,3H).
13C NMR(500MHz,CDCl3),δ:167.52,155.10,153.89,152.18,151.75, 149.70,148.57,147.32,134.15,130.09,129.51,129.44,127.13,125.82, 125.18,123.61,122.48,122.05,120.74,119.79,117.76,115.61,31.27. HRMS(ESI):m/z:Calcd for[C33H22N4O2S3+H+]603.09777,found 603.0969.
实施例5
(1)Suzuki偶联反应-Ⅰ
将4,7-二溴-2,1,3-苯并噻二唑(7.64g,26mmol),5-甲酰基-2-呋喃硼酸(3.28g,23.4mmol),碳酸钾(7.19g,52mmol)和四(三苯基膦)钯(3g, 2.6mmol)加入到1000ml圆底烧瓶中,加入480mL四氢呋喃和160mL的纯水,在80℃下磁力搅拌反应,反应12h后停止。待冷却后,将所述偶联反应所得反应液与二氯甲烷、水混合进行萃取,将所得的有机相依次经洗涤和干燥后,蒸馏去除溶剂,将所得残余物进行硅胶柱层析提纯(V(石油醚)/ V(二氯甲烷)=1/1)得到黄色固体化合物Ⅲ-2为3g,收率42%。
(2)Suzuki偶联反应-Ⅱ
将中间体Ⅲ-2(3.0g,9.7mmol),4-硼酸三苯胺(5.6g,19.4mmol),碳酸钾(5.4g,38.8mmol)和四(三苯基膦)钯(0.67g,0.58mmol)加入到500 ml圆底烧瓶中,加入290mL1,4-二氧六环和97mL的纯水,在80℃下磁力搅拌反应,反应12h后停止。待冷却后,将所述偶联反应所得反应液与二氯甲烷、水混合进行萃取,将所得的有机相依次经洗涤和干燥后,蒸馏去除溶剂,将所得残余物进行硅胶柱层析提纯(V(石油醚)/V(二氯甲烷)=1/1)得到橘色固体化合物Ⅳ-2为2.8g,收率62%。
(3)Knoevenagel缩合反应
将中间体Ⅳ-2(0.32g,0.7mmol),丙二腈(0.25g,3.4mmol)和醋酸铵(1.3 g,17mmol)溶解于85ml 1,2-二氯乙烷中,使反应液脱气十分钟。将反应混合物在80℃下搅拌反应12h。将反应液冷却至室温,所得反应液与二氯甲烷、水混合进行萃取,将所得的有机相依次经洗涤和干燥后,蒸馏去除溶剂,将所得残余物进行硅胶柱层析提纯(V(石油醚)/V(二氯甲烷)=1/1)得到黑色固体产品Ⅰ-5有290mg,收率为81%。
化合物Ⅰ-5的表征数据如下:
1H NMR(400MHz,CDCl3):δ8.38(d,1H),δ8.02(d,1H),δ7.92 (d,2H),δ7.85(d,1H),δ7.48(s,1H),δ7.38(s,1H),δ7.31(t, 4H),δ7.20(d,6H),δ7.10(t,2H).
13C NMR(400MHz,CDCl3),δ:153.76,151.91,148.85,147.37,147.20, 141.01,135.63,130.21,129.67,129.49,127.94,127.08,125.29,125.19, 123.77,122.25,118.81,115.67,114.47,113.72.
HRMS(ESI):m/z:Calcd for[C32H19N5OS+H+]522.13831,found 522.1377.
实施例6
(1)Suzuki偶联反应-Ⅰ
将4,7-二溴-2,1,3-苯并噻二唑(7.64g,26mmol),5-甲酰基-2-呋喃硼酸 (3.28g,23.4mmol),碳酸钾(7.19g,52mmol)和1,1-双(二苯基膦)二荗铁二氯化钯(3.7g,5.2mmol)加入到1000ml圆底烧瓶中,加入480mL四氢呋喃和160mL的纯水,在80℃下磁力搅拌反应,反应12h后停止。待冷却后,将所述偶联反应所得反应液与二氯甲烷、水混合进行萃取,将所得的有机相依次经洗涤和干燥后,蒸馏去除溶剂,将所得残余物进行硅胶柱层析提纯(V(石油醚)/V(二氯甲烷)=1/1)得到黄色固体化合物Ⅲ-2为3g,收率42%。
(2)Suzuki偶联反应-Ⅱ
将中间体Ⅲ-2(3.0g,9.7mmol),4-硼酸三苯胺(5.6g,19.4mmol),碳酸钾(5.4g,38.8mmol)和四(三苯基膦)钯(0.67g,0.58mmol)加入到500 ml圆底烧瓶中,加入290mL四氢呋喃和97mL的纯水,在80℃下磁力搅拌反应,反应12h后停止。待冷却后,将所述偶联反应所得反应液与二氯甲烷、水混合进行萃取,将所得的有机相依次经洗涤和干燥后,蒸馏去除溶剂,将所得残余物进行硅胶柱层析提纯(V(石油醚)/V(二氯甲烷)=1/1)得到橘色固体化合物Ⅳ-2为2.8g,收率62%。
(3)Knoevenagel缩合反应
将中间体Ⅳ-2(0.36g,0.76mmol),1,3-茚二酮(0.5g,3.3mmol)溶解在于85ml氯仿中。将2ml三乙胺滴加入反应溶液中,在氮气保护条件下于55℃搅拌回流24h。将反应混合物用水淬灭,用氯仿萃取。有机物用水、盐水洗涤,然后用无水硫酸镁干燥。通过旋转蒸发去除溶剂,用硅胶柱层析纯化(V(石油醚)/V(二氯甲烷)=1/1),得到所需的黑色固体产品Ⅰ-6有368 mg,收率81%。
化合物Ⅰ-6的表征数据如下:
1H NMR(400MHz,CDCl3):δ8.65(s,1H),δ8.38(d,1H),δ8.03 (d,1H),δ7.97(t,2H),δ7.92(d,2H),δ7.81(t,4H),δ7.31(t,4H),δ7.20(d,6H),δ7.09(t,2H).
13C NMR(400MHz,CDCl3),δ:181.35,167.93,156.55,155.76,153.10, 148.62,147.29,135.11,134.80,134.75,130.15,130.07,129.46,127.98, 127.04,126.54,126.51,125.18,123.65,122.46,119.88,116.80,111.52, 111.06.
HRMS(ESI):m/z:Calcd for[C38H23N3O3S+H+]602.15329,found 602.1521.
实施例7
(1)Suzuki偶联反应-Ⅰ
将4,7-二溴-2,1,3-苯并噻二唑(7.64g,26mmol),5-甲酰基-2-呋喃硼酸(3.28g,23.4mmol),碳酸钾(7.19g,52mmol)和四(三苯基膦)钯(3g, 2.6mmol)加入到1000ml圆底烧瓶中,加入480mL四氢呋喃和160mL的纯水,在80℃下磁力搅拌反应,反应12h后停止。待冷却后,将所述偶联反应所得反应液与二氯甲烷、水混合进行萃取,将所得的有机相依次经洗涤和干燥后,蒸馏去除溶剂,将所得残余物进行硅胶柱层析提纯(V(石油醚)/ V(二氯甲烷)=1/1)得到黄色固体化合物Ⅲ-2为3g,收率42%。
(2)Suzuki偶联反应-Ⅱ
将中间体Ⅲ-2(3.0g,9.7mmol),4-硼酸三苯胺(5.6g,19.4mmol),碳酸钾(5.4g,38.8mmol)和四(三苯基膦)钯(0.67g,0.58mmol)加入到500 ml圆底烧瓶中,加入290mL四氢呋喃和97mL的纯水,在80℃下磁力搅拌反应,反应12h后停止。待冷却后,将所述偶联反应所得反应液与二氯甲烷、水混合进行萃取,将所得的有机相依次经洗涤和干燥后,蒸馏去除溶剂,将所得残余物进行硅胶柱层析提纯(V(石油醚)/V(二氯甲烷)=1/1)得到橘色固体化合物Ⅳ-2为2.8g,收率62%。
(3)Knoevenagel缩合反应
将Ⅳ-2(0.36g,0.76mmol),苯乙腈(0.2g,1.7mmol)和甲醇钠(0.05 g,0.9mmol)加入85ml无水乙醇溶液中,在室温下搅拌1h。反应完成后将混合物过滤,沉淀物用乙醇洗涤,后用硅胶柱层析纯化(V(石油醚)/ V(二氯甲烷)=1/1),得到所需的红色固体产品Ⅰ-7有350mg,收率80%。
化合物Ⅰ-7的表征数据如下:
1H NMR(400MHz,CDCl3):δ8.35(d,1H),δ7.90(d,2H),δ7.88 (d,1H),δ7.82(d,1H),δ7.70(d,2H),δ7.45(t,2H),δ7.39(q, 2H),δ7.30(t,4H),δ7.20(q,6H),δ7.15(d,1H),δ7.08(t,2H).
13C NMR(400MHz,CDCl3),δ:153.85,152.80,151.79,149.54,148.31, 147.39,133.98,133.47,130.45,130.02,129.39,129.13,129.01,127.45, 126.66,125.83,125.66,125.05,123.47,122.64,120.36,119.20,118.28, 114.65,107.48.
HRMS(ESI):m/z:Calcd for[C37H24N4OS+Na+]595.15630,found 595.1550.
实施例8
紫外-可见吸收光谱测试:
在室温条件下,使用岛津UV 2600i紫外可见-近红外分光光度计进行测试,在300~800nm波段进行紫外-可见吸收光谱扫描,测量化合物I-1~I-7在氯仿中的紫外-可见吸收光谱,测试结果参阅图1。由图1可知,化合物I-1~I-3 在350~400nm和420~500nm出现强的吸收峰,化合物I-4~I-7在350~450nm 和460~550nm出现强的吸收峰。
实施例9
荧光发射光谱测试:
在室温条件下,使用Hitachi F-4600荧光分光光度计进行测试,化合物 I-1~I-3在460nm波长下激发,化合物I-4~I-7在530nm波长下激发,获得荧光发射光谱,测试结果参阅图2。由图2可知,化合物I-1~I-3在560~660nm 出现了较大的发射峰,化合物I-4~I-7在600~720nm出现了较大的发射峰。
实施例10
三阶非线性光学性能测试:
本发明所述的化合物I-1~I-7的三阶非线性光学性能采用Z-扫描技术进行测试。
测试所用激光器为A mode-locked Nd:YAG532 nm laser,能量探头为 Rj-7620ENERGY RATIOMETER,激光脉冲能量为30μJ,波长为532nm,脉冲宽度为4ns;
样品测试:将样品配成浓度为0.03mg/mL的氯仿溶液,置于厚度为2mm 的石英比色皿中,入射激光束由一个300mm焦距透镜聚焦到石英比色皿中,焦点位置的光斑束腰半径为30μm,Raleigh长度为3mm,测得线性透射率 T0为56%;
测试结果参阅图3及图4,图3为化合物I-1的三阶非线性实验数据和拟合曲线,I-1为反饱和吸收,且化合物I-2,I-3,I-4均为反饱和吸收;图4 为化合物I-5的三阶非线性实验数据及拟合曲线,I-5为饱和吸收,且化合物 I-6,I-7均为饱和吸收。
以上所述实施例的各技术特征可以进行任意组合,为使描述简洁,未对上述实施例中的各技术特征所有可能的组合都进行描述,然而,只要这些技术特征不存在矛盾,都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式,其描述较为具体和详细,但不能因此而理解为对本发明专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。因此,本发明专利的保护范围应以所附权利要求为准。
Claims (10)
4.根据权利要求1~3任一项所述的D-A-π-A型苯并噻二唑类功能染料的制备方法,其特征在于,包括如下步骤:
(1)Suzuki偶联反应-I:
式(II)所示的4,7-二溴-2,1,3-苯并噻二唑与含醛基的化合物M进行Suzuki偶联反应,得到式(III)所示的中间体;
(2)Suzuki偶联反应-II:
在氮气保护下,式(III)所示的中间体加入溶剂A和溶剂B的混合溶剂中,在碱A、钯催化剂A的作用下,与4-硼酸三苯胺在60~150℃下进行Suzuki偶联反应10~20h,得到式(IV)所示的苯并噻二唑衍生物;
(3)Knoevenagel缩合反应:
在氮气保护下,式(Ⅳ)所示的苯并噻二唑衍生物加入溶剂C中,在催化剂B的作用下与R2-H在25~100℃下进行Knoevenagel缩合反应1~10h,得到式(Ⅴ)所示的苯并噻二唑功能染料;
5.根据权利要求4所述的制备方法,其特征在于,步骤(1)中,所述的Suzuki偶联反应,具体包括:
在氮气保护下,在碱A和钯催化剂A的作用下,式(II)所示的4,7-二溴-2,1,3-苯并噻二唑与化合物M于溶剂A和溶剂B的混合溶剂中,在60~150℃下进行Suzuki偶联反应10~20h,得到式(III)所示的中间体。
6.根据权利要求5所述的制备方法,其特征在于,步骤(1)中,所述溶剂A为N,N-二甲基甲酰胺、N,N-二甲基乙酰胺、二甲基亚砜、甲苯、1,4-二氧六环或四氢呋喃;
所述的溶剂B为纯水;
所述的碱A为碳酸氢钠、氢氧化钾、碳酸钠、碳酸钾或碳酸铯;
所述的式(II)所示的4,7-二溴-2,1,3-苯并噻二唑、化合物M、碱A和钯催化剂A的摩尔比为1:0.3~1:0.05~3:0.01~0.1;
所述的溶剂A和溶剂B的体积比为1~5:1,所述的溶剂A的体积用量以式(II)所示的4,7-二溴-2,1,3-苯并噻二唑的质量计为20~50mL/g。
7.根据权利要求4所述的制备方法,其特征在于,步骤(2)中,所述溶剂A为N,N-二甲基甲酰胺、N,N-二甲基乙酰胺、二甲基亚砜、甲苯、1,4-二氧六环或四氢呋喃;
所述溶剂B为水;
所述碱A为碳酸氢钠、氢氧化钾、碳酸钠、碳酸钾或碳酸铯;
所述的式(Ⅲ)所示的中间体、4-硼酸三苯胺、碱A和钯催化剂A的摩尔比为1:1~4:1~4:0.01~0.08,
所述的溶剂A和溶剂B的体积比为1~5:1,所述的溶剂A的体积用量以式(Ⅲ)所示的中间体质量计为20~50mL/g。
8.根据权利要求4所述的制备方法,其特征在于,步骤(3)中,所述溶剂C为氯仿、1,2-二氯乙烷、甲苯、二氯甲烷或者无水乙醇,所述的溶剂C的体积用量以式(Ⅳ)所示的中间体质量计为20~50mL/g;
所述的催化剂B为三乙胺、甲醇钠、苯胺或者醋酸铵,所述的式(Ⅳ)所示的中间体、R2-H、催化剂B的摩尔比为1:1~5:4~20。
9.根据权利要求1至3中任一项所述的D-A-π-A型苯并噻二唑类功能染料在有机荧光材料和非线性光学中的应用。
10.根据权利要求3至8中任一项所述制备方法制备的D-A-π-A型苯并噻二唑类功能染料在有机荧光材料和非线性光学中的应用。
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