CN105623650A - 一种质子转移蓝色发光材料及其制备方法 - Google Patents
一种质子转移蓝色发光材料及其制备方法 Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000013256 coordination polymer Substances 0.000 claims abstract description 25
- 229920001795 coordination polymer Polymers 0.000 claims abstract description 25
- MWVTWFVJZLCBMC-UHFFFAOYSA-N 4,4'-bipyridine Chemical group C1=NC=CC(C=2C=CN=CC=2)=C1 MWVTWFVJZLCBMC-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 54
- 239000011701 zinc Substances 0.000 claims description 20
- 230000005945 translocation Effects 0.000 claims description 15
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 14
- 229910052725 zinc Inorganic materials 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 150000003751 zinc Chemical class 0.000 claims description 9
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical group [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims description 6
- 239000012043 crude product Substances 0.000 claims description 5
- 235000019441 ethanol Nutrition 0.000 claims description 5
- 238000001953 recrystallisation Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- ZOIORXHNWRGPMV-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O.CC(O)=O ZOIORXHNWRGPMV-UHFFFAOYSA-N 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 239000004246 zinc acetate Substances 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 abstract description 6
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 4
- 238000004020 luminiscence type Methods 0.000 abstract description 4
- 125000002587 enol group Chemical group 0.000 abstract description 2
- 230000005281 excited state Effects 0.000 abstract description 2
- 230000005283 ground state Effects 0.000 abstract description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 2
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 2
- 239000003446 ligand Substances 0.000 abstract 2
- 125000000468 ketone group Chemical group 0.000 abstract 1
- 239000013078 crystal Substances 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 3
- -1 Benzazoles compound Chemical class 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000002447 crystallographic data Methods 0.000 description 2
- 238000002189 fluorescence spectrum Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- SILNNFMWIMZVEQ-UHFFFAOYSA-N 1,3-dihydrobenzimidazol-2-one Chemical class C1=CC=C2NC(O)=NC2=C1 SILNNFMWIMZVEQ-UHFFFAOYSA-N 0.000 description 1
- 241001062009 Indigofera Species 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000005564 crystal structure determination Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- OUUQCZGPVNCOIJ-UHFFFAOYSA-N hydroperoxyl Chemical group O[O] OUUQCZGPVNCOIJ-UHFFFAOYSA-N 0.000 description 1
- 150000004715 keto acids Chemical class 0.000 description 1
- 239000000990 laser dye Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006862 quantum yield reaction Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
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- C07F3/00—Compounds containing elements of Groups 2 or 12 of the Periodic Table
- C07F3/003—Compounds containing elements of Groups 2 or 12 of the Periodic Table without C-Metal linkages
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Abstract
本发明属于无机化学领域,涉及发光材料,尤其涉及一种质子蓝发光材料及其制备方法。所述质子转移蓝色发光材料为2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑锌配位聚合物,化学式为C36H54N6O6Zn,属于单斜晶系,空间群为C2/c,a=18.6(10),b=11.6514(6),c=18.7(6),α=90°,β=129.(2)°,γ=90°,V=3149(197)3,所述发光材料选用的配体为2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑配体。2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑配体上的羟基与4,4’-联吡啶上氮通过分子内氢键连接,分子吸收能量后有基态烯醇式的N···H-O氢键,异构化成酮式N-H···O氢键从而产生分子内质子转移(ESIPT)特征发光,该配位聚合物发蓝色荧光,可作为一种基于分子内质子转移(ESIPT)蓝色发光材料。
Description
技术领域
本发明属于无机化学领域,涉及发光材料,尤其涉及一种质子蓝发光材料及其制备方法。
技术背景
苯并唑类化合物具有独特的π-共轭结构,当其氮杂环上的碳连接2-羟基苯基的时候会因为分子内质子转移(ESIPT)特征发光而产生强烈的荧光现象,且该类化合物激发态分子内质子转移发光具有Stokes位移大,荧光量子产率高,光稳定性较好等优点,使其在激光染料以及生物探针、光开关、光限幅、以及实时光存储等光学器件等领域引起人们的广泛关注。羟基苯并咪唑类化合物由于其锌配合物具有高色纯度和量子效率的蓝色发光,从而成为潜在优良的蓝光材料。
发明内容
本发明所要解决的问题是提供一种质子转移蓝色发光材料及其制备方法,尤其涉及2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑锌配位聚合物及其制备方法。
一种质子转移蓝色发光材料,所述质子转移蓝色发光材料为2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑锌配位聚合物,化学式为C36H54N6O6Zn,属于单斜晶系,空间群为C2/c, α=90°,β=129.(2)°,γ=90°,所述发光材料选用的配体为2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑配体,结构简式如下:
和4,4’-联吡啶,结构简式如下:
所述2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑锌配位聚合物是一维链结构。
制备所述质子转移蓝色发光材料的原料为:2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑配体、4,4’-联吡啶、甲醇溶液和锌盐;制备步骤如下:
(1)在n×50mL甲醇中加入n×2mmoL2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑配体和n×2mmoL4,4’-联吡啶,搅拌溶解,得溶液a;
(2)在溶液a中滴入n×10mL含有nmmoL锌盐的甲醇溶液,在回流条件下加热3h,反应过程中有白色固体析出;
(3)反应完毕后溶液浓缩至10mL,过滤得到粗品,用乙醇重结晶得到相应纯品;
(4)最后取少量纯品复溶于甲醇溶液自然挥发7天以上得到所述配位聚合物单晶。
所述n≥1。
所述锌盐为硝酸锌或醋酸锌。
本发明的有益效果:
(1)本发明以2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑配体上的羟基氧原子和氮原子与锌配位,4,4’-联吡啶上的氮原子也与锌配位从而形成一条沿b轴无线延伸的一维链状结构,相邻的一维链在b轴方向上相向平行排列,通过分子间水分子连接成独特的二维平面结构。
(2)2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑配体上的羟基与4,4’-联吡啶上氮通过分子内氢键连接,分子吸收能量后有基态烯醇式的N···H-O氢键,异构化成酮式N-H···O氢键从而产生分子内质子转移(ESIPT)特征发光,该配位聚合物发蓝色荧光,可作为一种基于分子内质子转移(ESIPT)蓝色发光材料。
附图说明
图1为2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑锌配位聚合物;
图2为2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑锌配位聚合物的一维链结构示意图;
图3为2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑锌配位聚合物的二维面结构示意图;
图4为2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑锌配位聚合物的三维面结构示意图;
图5为2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑锌配位聚合物的荧光光谱图。
具体实施方式
一种质子转移蓝色发光材料,所述质子转移蓝色发光材料为2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑锌配位聚合物,化学式为C36H54N6O6Zn,属于单斜晶系,空间群为C2/c, α=90°,β=129.(2)°,γ=90°,所述发光材料选用的配体为2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑配体,结构简式如下:
和4,4’-联吡啶,结构简式如下:
所述2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑锌配位聚合物是一维链结构。
制备所述质子转移蓝色发光材料的原料为:2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑配体、4,4’-联吡啶、甲醇溶液和锌盐;制备步骤如下:
(1)在n×50mL甲醇中加入n×2mmoL2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑配体和n×2mmoL4,4’-联吡啶,搅拌溶解,得溶液a;
(2)在溶液a中滴入n×10mL含有nmmoL锌盐的甲醇溶液,在回流条件下加热3h,反应过程中有白色固体析出;
(3)反应完毕后溶液浓缩至10mL,过滤得到粗品,用乙醇重结晶得到相应纯品;
(4)最后取少量纯品复溶于甲醇溶液自然挥发7天以上得到所述配位聚合物单晶。
所述n≥1。
所述锌盐为硝酸锌或醋酸锌。
实施例1
在50mL甲醇中加入2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑配体2mmol(0.45g)和4,4’-联吡啶2mmol(0.31g),搅拌溶解后滴入10ml含有1mmolZn(NO3)2·6H2O(0.30g)的甲醇溶液,滴加完毕后加热回流3h。反应过程中有白色固体析出,反应完毕后溶液浓缩至10ml,过滤得到粗品,用乙醇重结晶得到相应纯品。然后取少量纯品复溶于甲醇自然挥发7天以上得到所述配位聚合物单晶,产率63%(基于Zn)。
取实施例1的配位聚合物进行结构表征分析
(1)配位聚合物的晶体结构测定
配位聚合物的单晶衍射数据用大小合适的单晶样品在安捷伦公司Xcalibur&GeminiECCDX-射线单晶衍射仪上进行测试。单晶衍射数据经用石墨单色化的Mo-Kα辐射在室温下进行收集,进而利用SHELXTL程序包通过直接法对化合物的晶体结构进行解析及精修。氢原子的位置由理论加氢所确定。化合物晶体学数据见表1和表2。
表1配位聚合物的主要晶体学数据
aR1=∑||F0|-|Fc||/∑|F0|;wR2=[∑w(F0 2-Fc 2)2/∑w(F0 2)2]1/2
表2.主要键长和键角(°)
Symmetrytransformationsused+togenerateequivalentatoms:#1-x,y,-z+1/2;#2x,y-1,z
实施例2
在50mL甲醇中加入2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑配体2mmol(0.45g)和4,4’-联吡啶2mmol(0.31g),搅拌溶解后滴入10ml含有1mmolZn(CH3COO)2·2H2O(0.22g)的甲醇溶液,滴加完毕后加热回流3h。反应过程中有白色固体析出,反应完毕后溶液浓缩至10ml,过滤得到粗品,用乙醇重结晶得到相应纯品。然后取少量纯品复溶于甲醇自然挥发7天以上得到所述配位聚合物单晶,产率58%(基于Zn),其配位聚合物的荧光光谱如图5所示。
Claims (5)
1.一种质子转移蓝色发光材料,其特征在于,所述质子转移蓝色发光材料为2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑锌配位聚合物,化学式为C36H54N6O6Zn,属于单斜晶系,空间群为C2/c,α=90°,β=129.(2)°,γ=90°,所述发光材料选用的配体为2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑配体,结构简式如下:
和4,4’-联吡啶,结构简式如下:
2.如权利要求1所述的质子转移蓝色发光材料,其特征在于,所述2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑锌配位聚合物是一维链结构。
3.一种质子转移蓝色发光材料的制备方法,其特征在于,制备所述质子转移蓝色发光材料的原料为:2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑配体、4,4’-联吡啶、甲醇溶液和锌盐;制备步骤如下:
(1)在n×50mL甲醇中加入n×2mmoL2-(2′-羟基苯)-1-氢-4-羟基苯并咪唑配体和n×2mmoL4,4’-联吡啶,搅拌溶解,得溶液a;
(2)在溶液a中滴入n×10mL含有nmmoL锌盐的甲醇溶液,在回流条件下加热3h,反应过程中有白色固体析出;
(3)反应完毕后溶液浓缩至10mL,过滤得到粗品,用乙醇重结晶得到相应纯品;
(4)最后取少量纯品复溶于甲醇溶液自然挥发7天以上得到所述配位聚合物单晶。
4.如权利要求3所述的质子转移蓝色发光材料的制备方法,其特征在于,所述n≥1。
5.如权利要求3所述的质子转移蓝色发光材料的制备方法,其特征在于,所述锌盐为硝酸锌或醋酸锌。
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JPH10265478A (ja) * | 1997-03-25 | 1998-10-06 | Mitsubishi Chem Corp | イミダゾール金属錯体及びそれを用いた有機電界発光素子 |
CN102241974A (zh) * | 2011-05-04 | 2011-11-16 | 宁波大学 | 一种近蓝色荧光材料及其制备方法 |
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JPH10265478A (ja) * | 1997-03-25 | 1998-10-06 | Mitsubishi Chem Corp | イミダゾール金属錯体及びそれを用いた有機電界発光素子 |
CN102241974A (zh) * | 2011-05-04 | 2011-11-16 | 宁波大学 | 一种近蓝色荧光材料及其制备方法 |
Non-Patent Citations (3)
Title |
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YI-PING TONG 等: "Structures, Photoluminescence and Theoretical Studies of Two ZnII Complexes with Substituted 2-(2-Hydroxyphenyl)benzimidazoles", 《EUR. J. INORG. CHEM.》 * |
ZHAO ZHANG 等: "Near-infrared (NIR) luminescent hetero-tetranuclear Zn2Ln2 (Ln = Nd, Yb or Er) complexes self-assembled from the benzimidazole-based HL and two rigid 4,40-bipyridine ligands with different spacers", 《SPECTROCHIMICA ACTA PART A: MOLECULAR AND BIOMOLECULAR SPECTROSCOPY》 * |
孙小莉 等: "基于双羟基苯并咪唑配体的新型多核锌簇寡聚物蓝光材料", 《中国化学会第29届学术年会摘要集-第05分会:无机化学》 * |
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