CN105272974B - 苯乙烯基吡啶盐衍生物及使用该衍生物的非线性光学材料 - Google Patents

苯乙烯基吡啶盐衍生物及使用该衍生物的非线性光学材料 Download PDF

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CN105272974B
CN105272974B CN201510353768.1A CN201510353768A CN105272974B CN 105272974 B CN105272974 B CN 105272974B CN 201510353768 A CN201510353768 A CN 201510353768A CN 105272974 B CN105272974 B CN 105272974B
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青木一良
冈田修司
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Aikolai Co Ltd
Yamagata University NUC
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Abstract

本发明涉及苯乙烯基吡啶盐衍生物及使用该衍生物的非线性光学材料。本发明提供作为非线性光学材料有用的新的苯乙烯基吡啶盐衍生物。下述通式(I)表示的苯乙烯基吡啶盐衍生物,式中,R1、R2、R3、R4各自独立地表示氢或卤素、烷基、羟基、羧基、氨基,R5表示氢或烷基,X表示氧或NR6(R6为氢或烷基),Y表示阴离子。另外,通式(I)中,轻氢的一部分或全部可以被取代为重氢。

Description

苯乙烯基吡啶盐衍生物及使用该衍生物的非线性光学材料
技术领域
本发明涉及作为非线性光学材料有用的新的苯乙烯基吡啶盐衍生物。
背景技术
以往,作为电气光学(EO)元件中使用的电气光学(EO)材料,使用LiNbO3(LN)等无机非线性光学材料,但近年来,进行了显示出高的非线性光学特性的有机材料的研究,如专利文献1所记载的那样,使用作为EO材料有用的有机非线性光学材料DAST。
专利文献1:WO2005/071145
作为非线性光学材料使用的DAST的吸收端存在于720nm附近,在作为面向1.3μm频带的非线性光学材料使用的情况下,存在如下问题:吸收由于二次谐波产生(SHG)而次要产生的650nm附近的光,从而导致材料的劣化。因此,作为非线性光学材料所要求的特性,具有高的光学非线性并且在比二次谐波的波长区域长的波长侧不具有吸收成为必要条件。
发明内容
因此,本发明的目的在于提供显示高的光学的非线性并且在可见光的长波长区域不具有吸收的有机非线性光学材料。另外,本发明的目的在于提供与以DAST为代表的现有的苯乙烯基吡啶盐非线性光学材料相比吸收端(λCUTOFF)存在于更短的波长即600nm以下并具有更高的二阶非线性光学活性的新的非线性光学材料。
即,本发明提供下述通式(I)表示的苯乙烯基吡啶盐衍生物。
式中,R1、R2、R3、R4各自独立地表示氢或卤素、烷基、羟基、羧基、氨基,R5表示氢或烷基,X表示氧或NR6(R6为氢或烷基),Y-表示阴离子。另外,通式(I)中,轻氢的一部分或全部可以被取代为重氢。
另外,还提供含有通式(I)表示的苯乙烯基吡啶盐衍生物的非线性光学材料以及使用该非线性光学材料的光源装置和太赫兹波产生装置。
需要说明的是,在本发明中,“非线性光学材料”这一术语包含“EO材料”。
发明效果
在将本发明的非线性光学材料作为面向1.3μm频带的非线性光学材料使用的情况下,与DAST相比,吸收端位移至短波长侧,因此,作为二次谐波的波长的650nm附近的吸收消失,可以抑制作为非线性光学材料的劣化,期待长寿命化。
另外,关于二阶非线性光学特性,在DAST的阳离子部分,第一分子极化率β为242×10-30esu(利用作为半经验性分子轨道法的MOPAC/PM5法计算),与此相对,在本发明的具有吗啉骨架的苯乙烯基吡啶盐衍生物的阳离子部分,极化率β为279×10-30esu,在具有哌嗪骨架的苯乙烯基吡啶盐衍生物的阳离子部分,极化率β为289×10-30esu,分子水平上的特性提高,因此认为是非常有用的非线性光学材料。
附图说明
图1是本发明的一个方式的光源装置的概略图。
图2是本发明的一个方式的太赫兹波产生装置的概略图。
图3是表示DAST和化合物1~8的SHG活性评价的结果的图。
图4是表示DAST和化合物2的微晶粉末的耐激光性评价的结果的图。
标号说明
1…激光器、2…透镜系统、3…本发明的化合物的非线性光学晶体、4…基波截止滤光片、5…对非线性光学晶体的基波、6…二次谐波、10…光源装置
11…激发激光器、12…KTiOPO4晶体、13…反射镜、14…透镜系统、15…本发明的化合物的非线性光学晶体、16…光波截止滤光片、17…激发光、18…双波长光、19…太赫兹波、20…太赫兹波产生装置
具体实施方式
如下述通式(I)所示,本发明的苯乙烯基吡啶盐衍生物是在苯乙烯基吡啶盐骨架上结合有吗啉骨架或哌嗪骨架的化合物。
式中,R1、R2、R3、R4各自独立地表示氢或卤素、烷基、羟基、羧基、氨基,R5表示氢或烷基,X表示氧或NR6(R6为氢或烷基),Y-表示阴离子。另外,也包含通式(I)中轻氢的一部分或全部被取代为重氢的化合物。
R1、R2更优选为氢或烷基,R3、R4更优选为氢,R5更优选为烷基。
作为卤素,可以列举F、Cl、Br、I等。
作为烷基,可以列举碳原子数1~10、更优选1~5的直链状或支链状的烷基,具体而言,可以列举甲基、乙基、正丙基、异丙基、正丁基、异丁基、正戊基、异戊基或新戊基等,其中,优选甲基或乙基。另外,烷基的氢原子可以被取代,作为取代基,可以列举卤素原子、羟基、醚基、羧基、酯基、硝基、氨基、磺基等官能团。
Y-只要是显示阴离子性的基团则没有特别限制,可以列举例如F、Cl、Br、I等卤素原子的阴离子或磺酸、羧酸的阴离子。作为磺酸根阴离子,可以列举下述结构式所示的苯磺酸类的阴离子。另外,可以为硫酸氢根离子、硝酸根离子、四氟硼酸根离子、高氯酸根离子、高溴酸根离子、高碘酸根离子。
在此,Z表示卤素。
作为本发明的苯乙烯基吡啶盐衍生物,可以更优选列举下述的通式(II)表示的化合物。
式中,R1、R2各自独立地表示氢或烷基,X表示氧或NR6(R6为氢或烷基),Y-表示阴离子。另外,也包含通式(II)中轻氢的一部分或全部被取代为重氢的化合物。
在此,X为氧时,R1、R2优选为烷基,X为NR6(R6为氢或烷基)时,R1、R2优选为氢。
本发明的通式(I)表示的具有吗啉骨架的苯乙烯基吡啶盐化合物和具有哌嗪骨架的苯乙烯基吡啶盐化合物例如可以通过如下所示的合成路径来合成。
苯乙烯基吡啶盐化合物的合成
[式中,R1、R2、R3、R4、R5、R6和Y-表示与前述相同的含义]
步骤1
使4-甲基吡啶(Ia)在THF等醚类溶剂中在加热环境下与卤代烷等具有离去基团的烷基化合物反应数小时,由此,得到以卤化物离子Q-作为抗衡阴离子的化合物(Ib)。
步骤2
使吗啉或哌嗪化合物(Ic)在DMSO等极性溶剂中在加热环境下与例如4-氟苯甲醛反应,由此得到化合物(Id)。
步骤3
使步骤1中得到的化合物(Ib)与步骤2中得到的化合物(Id)在甲醇等极性溶剂中在加热环境下反应,由此得到化合物(Ie)。
步骤4
使步骤3中得到的化合物(Ie)与阴离子的银盐在甲醇等极性溶剂中在加热环境下反应,由此得到化合物(If)。
本发明的苯乙烯基吡啶盐衍生物为二阶非线性光学材料,因此,也能够应用于作为普通的非线性光学材料特性的波长转换元件、太赫兹(THz)波产生装置。
另外,也可以作为电场传感器、EO元件、光提取元件、光快门、高速光开关元件、光逻辑门、光晶体管等原材用材料使用。
作为利用本发明的化合物作为光波长转换元件的光源装置,可以例示短波长激光产生装置,更具体而言,可以例示二次谐波产生装置。
使用图1进行利用本发明的化合物作为光波长转换元件的光源装置10(二次谐波产生装置)的说明。但是,图1只不过是一个例子,光源装置不限于图1的方式。
图1中,1为激光器,2为透镜系统,3为本发明的化合物的非线性光学晶体,4为基波截止滤光片,5为对非线性光学晶体的基波,6为二次谐波。
使用激光器1而发射出波长1310nm的激光(基波),该激光被非线性晶体3转换成波长655nm的红色的二次谐波。需要说明的是,在此示出的激光器1的波长为一例,二次谐波可以在不被非线性光学晶体3强吸收的范围内选择。
需要说明的是,光波长转换用晶体可以不是完整的晶体,只要本发明的化合物整齐排列成产生二次谐波的程度即可,可以为施加电场而使其排列的晶体、在树脂上或树脂中整齐排列的晶体。在下述的太赫兹波产生装置中使用的情况也同样。
接着,使用图2进行本发明的另一方式的太赫兹波产生装置20的说明。但是,图2只不过是一个例子,太赫兹波产生装置不限于图2的方式。
通过利用作为非线性光学效果的差频产生(以下简记为DFG)现象,能够产生太赫兹波。使两种波长(频率f1、f2)不同的光波入射到DFG晶体时,产生与它们的差频相对应的f3=|f1-f2|的电磁波,作为f3,以使其达到THz波频率的方式设定f1、f2时,产生THz波。
作为双波长光源,可以使用光参量振荡器、Ti蓝宝石激光器等。
图2是组合有双波长光参量振荡器和非线性光学晶体的THz波产生装置的构成图,11为激发激光器,12为KTiOPO4(以下简记为KTP)晶体,13为反射镜,14为透镜系统,15为本发明的化合物的非线性光学晶体,16为光波截止滤光片,17为激发光,18为双波长光,19为太赫兹波。将从由反射镜13和形成稍微不同的晶体角度的两个KTP晶体12构成的光参量振荡器产生的双波长光18利用透镜系统14会聚后入射到本发明的化合物的非线性光学晶体15时,利用非线性光学效果而产生太赫兹波19。
另外,本发明的化合物的晶体可以与其他晶体组合使用。例如,也可以如日本特开2012-177896所记载的那样,将本发明的化合物的晶体与其他化合物的晶体贴合来使用。
实施例
以下,列举实施例对本发明具体进行说明,但本发明的方式不限于下述实施例。
如下合成化合物1~8。
合成例1
(1-1)碘化1,4-二甲基吡啶盐的合成
在室温下向4-甲基吡啶15g的THF溶液160mL中加入碘甲烷10mL,在60℃下加热搅拌2小时。反应结束后,滤出析出的固体,并进行干燥,由此得到碘化1,4-二甲基吡啶盐的白色结晶粉末34.9g。
1H-NMR(400MHz、CD3OD)δ:8.74(d,J=6.3Hz,2H),7.92(d,J=6.3Hz,2H),4.36(s,3H),2.68(s,3H)
(1-2)碘化1-甲基-4-(4-吗啉基苯乙烯基)吡啶盐的合成
在室温下向4-(4-甲酰基苯基)吗啉5g的甲醇溶液78mL中依次加入碘化1,4-二甲基吡啶盐6.2g、哌啶2.6mL,在45℃下加热搅拌1天。反应结束后,滤出析出的固体,用甲醇进行重结晶,由此得到碘化1-甲基-4-(4-吗啉基苯乙烯基)吡啶盐的红色结晶粉末9.3g。
1H-NMR(400MHz、CD3OD)δ:8.58(d,J=7.3Hz,2H),8.04(d,J=7.3Hz,2H),7.85(d,J=16.1Hz,1H),7.65(d,J=8.8Hz,2H),7.19(d,J=16.1Hz,1H),7.02(d,J=8.8Hz,2H),4.25(s,3H),3.83(t,J=4.9Hz,4H),3.31(t,J=4.9Hz,4H)
(1-3)碘化1-甲基-4-(4-吗啉基苯乙烯基)吡啶盐的阴离子交换反应的一般方法
使碘化1-甲基-4-(4-吗啉基苯乙烯基)吡啶盐1mmol在甲醇溶液中在60℃下加热溶解后,加入阴离子的银盐1mmol,加热搅拌1天。反应结束后,滤去析出的碘化银,将滤液的甲醇蒸馏除去后,用甲醇进行重结晶,由此得到以目标阴离子作为抗衡阴离子的1-甲基-4-(4-吗啉基苯乙烯基)吡啶盐。
(1-4)2,4,5-三氯苯磺酸1-甲基-4-(4-吗啉基苯乙烯基)吡啶盐的合成
在与(1-3)的合成法同样的条件下得到2,4,5-三氯苯磺酸1-甲基-4-(4-吗啉基苯乙烯基)吡啶盐。
1H-NMR(400MHz、CD3OD)δ:8.57(d,J=6.9Hz,2H),8.10(s,1H),8.02(d,J=6.9Hz,2H),7.84(d,J=16.2Hz,1H),7.67(s,1H),7.64(d,J=8.8Hz,2H),7.18(d,J=16.2Hz,1H),7.01(d,J=8.8Hz,2H),4.25(s,3H),3.83(t,J=4.9Hz,4H),3.31(t,J=4.9Hz,4H)
合成例2
(2-1)4-(顺式-2,6-二甲基吗啉基)苯甲醛的合成
在室温下在顺式-2,6-二甲基吗啉23.5g的二甲亚砜溶液200mL中依次加入4-氟苯甲醛21mL、碳酸钾28.2g,在100℃下加热搅拌1天。反应结束后,在室温下加入蒸馏水,用乙酸乙酯进行萃取。将有机层用饱和氯化钠水溶液清洗后,用无水硫酸镁干燥。滤去干燥剂后,减压浓缩,将所得到的残渣利用硅胶柱层析法(乙酸乙酯/己烷)纯化,得到4-(顺式-2,6-二甲基吗啉基)苯甲醛的黄白色结晶粉末33.8g。
1H-NMR(400MHz、CDCl3)δ:9.81(s,1H),7.78(d,J=9.0Hz,2H),6.97(d,J=9.0Hz,2H),3.84-3.79(m,2H),3.65(dd,J=10.8,2.2Hz,2H),2.60(dd,J=12.5,10.8Hz,2H),1.28(d,J=6.3Hz,6H)
(2-2)碘化4-(4-(顺式-2,6-二甲基吗啉基)苯乙烯基)-1-甲基吡啶盐的合成
在与碘化1-甲基-4-(4-吗啉基苯乙烯基)吡啶盐的合成法同样的条件下,由4-(顺式-2,6-二甲基吗啉基)苯甲醛和碘化1,4-二甲基吡啶盐得到碘化4-(4-(顺式-2,6-二甲基吗啉基)苯乙烯基)-1-甲基吡啶盐。
1H-NMR(400MHz、CD3OD)δ:8.57(d,J=7.0Hz,2H),8.03(d,J=7.0Hz,2H),7.84(d,J=16.2Hz,1H),7.64(d,J=8.8Hz,2H),7.18(d,J=16.2Hz,1H),7.01(d,J=8.8Hz,2H),4.25(s,3H),3.79-3.71(m,4H),2.45(dd,J=12.3,10.4Hz,2H),1.24(d,J=6.3Hz,6H)
(2-3)2,4,5-三氯苯磺酸4-(4-(顺式-2,6-二甲基吗啉基)苯乙烯基)-1-甲基吡啶盐的合成
在与(1-3)的合成法同样的条件下得到2,4,5-三氯苯磺酸4-(4-(顺式-2,6-二甲基吗啉基)苯乙烯基)-1-甲基吡啶盐。
1H-NMR(400MHz、CD3OD)δ:8.56(d,J=6.9Hz,2H),8.10(s,1H),8.01(d,J=6.9Hz,2H),7.83(d,J=16.1Hz,1H),7.67(s,1H),7.63(d,J=9.0Hz,2H),7.16(d,J=16.1Hz,1H),7.00(d,J=9.0Hz,2H),4.25(s,3H),3.79-3.71(m,4H),2.45(dd,J=12.2,10.5Hz,2H),1.24(d,J=6.3Hz,6H)
合成例3
4-氟苯磺酸4-(4-(顺式-2,6-二甲基吗啉基)苯乙烯基)-1-甲基吡啶盐的合成
在与(1-3)的合成法同样的条件下得到4-氟苯磺酸4-(4-(顺式-2,6-二甲基吗啉基)苯乙烯基)-1-甲基吡啶盐。
1H-NMR(400MHz、CD3OD)δ:8.56(d,J=7.0Hz,2H),8.01(d,J=7.0Hz,2H),7.87-7.80(m,3H),7.63(d,J=9.0Hz,2H),7.20-7.10(m,3H),7.01(d,J=9.0Hz,2H),4.24(s,3H),3.80-3.70(m,4H),2.45(dd,J=12.2,10.5Hz,2H),1.24(d,J=6.3Hz,6H)
合成例4
(4-1)碘化1-甲基-4-(4-(4-甲基哌嗪基)苯乙烯基)吡啶盐的合成
在与碘化1-甲基-4-(4-吗啉基苯乙烯基)吡啶盐的合成法同样的条件下,由4-(4-甲基哌嗪基)苯甲醛和碘化1,4-二甲基吡啶盐得到碘化1-甲基-4-(4-(4-甲基哌嗪基)苯乙烯基)吡啶盐。
1H-NMR(400MHz、CD3OD)δ:8.58(d,J=6.9Hz,2H),8.03(d,J=6.9Hz,2H),7.85(d,J=16.2Hz,1H),7.64(d,J=8.8Hz,2H),7.19(d,J=16.2Hz,1H),7.02(d,J=8.8Hz,2H),4.25(s,3H),3.38(t,J=5.2Hz,4H),2.61(t,J=5.1Hz,4H),2.36(s,3H)
(4-2)4-氯苯磺酸1-甲基-4-(4-(4-甲基哌嗪基)苯乙烯基)吡啶盐的合成
在与(1-3)的合成法同样的条件下得到4-氯苯磺酸1-甲基-4-(4-(4-甲基哌嗪基)苯乙烯基)吡啶盐。
1H-NMR(400MHz、CD3OD)δ:8.56(d,J=6.9Hz,2H),8.01(d,J=6.9Hz,2H),7.83(d,J=16.2Hz,1H),7.80-7.77(m,2H),7.63(d,J=9.0Hz,2H),7.44-7.39(m,2H),7.17(d,J=16.2Hz,1H),7.01(d,J=9.0Hz,2H),4.24(s,3H),3.37(t,J=5.2Hz,4H),2.61(t,J=5.2Hz,4H),2.36(s,3H)
合成例5
3-硝基苯磺酸1-甲基-4-(4-(4-甲基哌嗪基)苯乙烯基)吡啶盐的合成
在与(1-3)的合成法同样的条件下得到3-硝基苯磺酸1-甲基-4-(4-(4-甲基哌嗪基)苯乙烯基)吡啶盐。
1H-NMR(400MHz、CD3OD)δ:8.63-8.60(m,1H),8.57(d,J=6.9Hz,2H),8.32-8.26(m,1H),8.20-8.15(m,1H),8.02(d,J=6.9Hz,2H),7.83(d,J=16.2Hz,1H),7.72-7.65(m,1H),7.63(d,J=9.0Hz,2H),7.17(d,J=16.2Hz,1H),7.01(d,J=9.0Hz,2H),4.25(s,3H),3.38(t,J=5.1Hz,4H),2.64(t,J=4.9Hz,4H),2.38(s,3H)
合成例6
4-硝基苯磺酸1-甲基-4-(4-(4-甲基哌嗪基)苯乙烯基)吡啶盐的合成
在与(1-3)的合成法同样的条件下得到4-硝基苯磺酸1-甲基-4-(4-(4-甲基哌嗪基)苯乙烯基)吡啶盐。
1H-NMR(400MHz、CD3OD)δ:8.57(d,J=7.0Hz,2H),8.31-8.26(m,2H),8.05-8.00(m,4H),7.83(d,J=16.2Hz,1H),7.63(d,J=8.9Hz,2H),7.17(d,J=16.2Hz,1H),7.01(d,J=8.9Hz,2H),4.25(s,3H),3.37(t,J=5.2Hz,4H),2.61(t,J=5.1Hz,4H),2.36(s,3H)
合成例7
萘-2-磺酸1-甲基-4-(4-(4-甲基哌嗪基)苯乙烯基)吡啶盐的合成
在与(1-3)的合成法同样的条件下得到萘-2-磺酸1-甲基-4-(4-(4-甲基哌嗪基)苯乙烯基)吡啶盐。
1H-NMR(400MHz、CD3OD)δ:8.57(d,J=6.9Hz,2H),8.33(s,1H),8.00(d,J=6.9Hz,2H),7.95-7.85(m,4H),7.80(d,J=16.2Hz,1H),7.63(d,J=8.9Hz,2H),7.58-7.50(m,2H),7.17(d,J=16.2Hz,1H),7.03(d,J=8.9Hz,2H),4.24(s,3H),3.64-3.52(m,4H),3.26-3.15(m,4H),2.80(s,3H)
合成例8
2,4,5-三氯苯磺酸1-甲基-4-(4-(4-甲基哌嗪基)苯乙烯基)吡啶盐的合成
在与(1-3)的合成法同样的条件下得到2,4,5-三氯苯磺酸1-甲基-4-(4-(4-甲基哌嗪基)苯乙烯基)吡啶盐。
1H-NMR(400MHz、CD3OD)δ:8.56(d,J=7.0Hz,2H),8.10(s,1H),8.02(d,J=7.0Hz,2H),7.83(d,J=16.1Hz,1H),7.67(s,1H),7.63(d,J=9.0Hz,2H),7.17(d,J=16.1Hz,1H),7.01(d,J=9.0Hz,2H),4.25(s,3H),3.37(t,J=5.1Hz,4H),2.61(t,J=5.1Hz,4H),2.36(s,3H)
对于化合物1~8,如下进行评价。
[微晶粉末的SHG活性评价]
对苯乙烯基吡啶盐衍生物(DAST和化合物1~8)的微晶粉末照射Nd:YAG激光(1064nm、输出4mJ/脉冲),对由SHG引起的532nm的绿色散射发光进行确认。
[微晶粉末的吸收端评价]
进行由样品粉末和硫酸钡制作的试样的反射率测定,将吸收端设定为从基线(无吸收的1100nm的反射率)减少了4%的波长。
[微晶粉末的耐激光性评价]
对DAST和化合物2的微晶粉末照射Nd:YAG激光(1064nm、输出6.5mJ/脉冲),对随时间推移的SHG强度进行测定。
(化合物1的评价的总结)
对化合物1进行粉末SHG活性评价的结果,观察到由SHG引起的532nm的绿色散射发光。其强度为从尿素微晶粉末同样产生的SHG强度的1倍。另外,粉末晶体的吸收端为547nm。(DAST的SHG强度为7.6倍、吸收端为720nm)
(化合物2的评价的总结)
对化合物2进行粉末SHG活性评价的结果,观察到由SHG引起的532nm的绿色散射发光。其强度为从尿素微晶粉末同样产生的SHG强度的80.3倍。另外,粉末晶体的吸收端为534nm。另外,如图4所示,化合物2的SHG强度与DAST不同,不随时间推移而衰减。
(化合物3的评价的总结)
对化合物3进行粉末SHG活性评价的结果,观察到由SHG引起的532nm的绿色散射发光。其强度为从尿素微晶粉末同样产生的SHG强度的0.4倍。另外,粉末晶体的吸收端为562nm。
(化合物4的评价的总结)
对化合物4进行粉末SHG活性评价的结果,观察到由SHG引起的532nm的绿色散射发光。其强度为从尿素微晶粉末同样产生的SHG强度的12.0倍。另外,粉末晶体的吸收端为540nm。
(化合物5的评价的总结)
对化合物5进行粉末SHG活性评价的结果,观察到由SHG引起的532nm的绿色散射发光。其强度为从尿素微晶粉末同样产生的SHG强度的6.9倍。另外,粉末晶体的吸收端为562nm。
(化合物6的评价的总结)
对化合物6进行粉末SHG活性评价的结果,观察到由SHG引起的532nm的绿色散射发光。其强度为从尿素微晶粉末同样产生的SHG强度的7.2倍。另外,粉末晶体的吸收端为554nm。
(化合物7的评价的总结)
对化合物7进行粉末SHG活性评价的结果,观察到由SHG引起的532nm的绿色散射发光。其强度为从尿素微晶粉末同样产生的SHG强度的0.1倍。另外,粉末晶体的吸收端为535nm。
(化合物8的评价的总结)
对化合物8进行粉末SHG活性评价的结果,观察到由SHG引起的532nm的绿色散射发光。其强度为从尿素微晶粉末同样产生的SHG强度的18.8倍。另外,粉末晶体的吸收端为536nm。
由以上可知,本发明的化合物与DAST相比,吸收端位移至短波长侧,在可见光区域的长波长区域内的吸收少。另外,关于化合物2、4、5、6、8,显示出与DAST同等以上的SHG强度。

Claims (10)

1.一种下述通式(I)表示的苯乙烯基吡啶盐衍生物,
式中,R1、R2、R3、R4各自独立地表示氢、卤素、未取代的碳原子数1~10的烷基、羟基、羧基或者氨基,
R5表示氢或者未取代的碳原子数1~10的烷基,
X表示氧或NR6,其中R6为氢或者未取代的碳原子数1~10的烷基,
Y-表示选自由磺酸根阴离子、羧酸的阴离子、硫酸氢根离子、硝酸根离子、四氟硼酸根离子、高氯酸根离子、高溴酸根离子和高碘酸根离子组成的组中的阴离子,
通式(I)中,轻氢的一部分或全部可以被取代为重氢。
2.一种下述通式(II)表示的苯乙烯基吡啶盐衍生物,
式中,R1、R2各自独立地表示氢或者未取代的碳原子数1~10的烷基,
X表示氧或NR6,其中R6为氢或者未取代的碳原子数1~10的烷基,当X为氧时,R1和R2为未取代的碳原子数1~10的烷基,
Y-表示选自由卤素原子的阴离子、磺酸根阴离子、羧酸的阴离子、硫酸氢根离子、硝酸根离子、四氟硼酸根离子、高氯酸根离子、高溴酸根离子和高碘酸根离子组成的组中的阴离子,
通式(II)中,轻氢的一部分或全部可以被取代为重氢。
3.如权利要求1所述的苯乙烯基吡啶盐衍生物,其中,R1、R2各自独立地表示氢或者未取代的碳原子数1~10的烷基,R3和R4表示氢,R5表示甲基。
4.如权利要求1~3中任一项所述的苯乙烯基吡啶盐衍生物,其中,Y-为磺酸根阴离子。
5.如权利要求4所述的苯乙烯基吡啶盐衍生物,其中,Y-为苯磺酸根阴离子。
6.如权利要求5所述的苯乙烯基吡啶盐衍生物,其中,所述苯磺酸根阴离子选自下述结构式所示的阴离子,
式中,Z表示卤素。
7.一种下述式(III)表示的苯乙烯基吡啶盐衍生物,
8.一种非线性光学材料,其含有权利要求1~7中任一项所述的苯乙烯基吡啶盐衍生物。
9.一种光源装置,其利用权利要求8所述的非线性光学材料作为光波长转换元件。
10.一种太赫兹波产生装置,其包含权利要求8所述的非线性光学材料。
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