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2(水杨醛缩苯胺)-(1,10-邻菲罗啉)合钙的光谱特性
  • ISSN号:1000-7032
  • 期刊名称:《发光学报》
  • 时间:0
  • 分类:O482.31[理学—固体物理;理学—物理]
  • 作者机构:[1]太原理工大学理学院, [2]太原理工大学材料科学与工程学院,山西太原030024
  • 相关基金:国家杰出青年基金(50025103);国家自然科学基金(90306014,20271037);山西省自然科学基金(20041066);山西省留学回国人员基金(200523)资助项目
中文摘要:

合成了一种新型的蓝光发射材料2(水杨醛缩苯胺)-(1,10-邻菲罗啉)合钙,并利用红外光谱、X射线衍射谱、DSC热分析、UV-vis吸收谱、荧光激发光谱和荧光发射光谱研究了其结构、晶态、热稳定性以及光学特性,分析了它的能态结构和发光机理。结果表明,2(水杨醛缩苯胺)-(1,10-邻菲罗啉)合钙的热稳定性较高,是一种多晶粉末发光材料,禁带宽度2.93eV,在紫外光的激发下,固态荧光发射峰在449.7nm处,在乙醇溶液体系中的荧光发射峰在491nm处,均为蓝色荧光,色纯度高,荧光量子效率高,其荧光发射主要来源于长波吸收带,最大波长吸收带对荧光发射贡献最大。

英文摘要:

A new light emitting material, 2 ( salicylaldehyde with aniline) -(1,10-phenanthroline) calcium was synthesized. Its molecular structure, crystal structure, thermal stability and optical properties were investigated by FTIR spectra, XRD spectra, DSC thermal analysis, UV-vis spectra, fluorescence excitation spectrum and fluorescence spectrum, respectively. Its energy band and light emission mechanism were studied. Results show that 2 (salicylaldehyde with aniline) -(1,10-phenanthroline) calcium is a thermally stable, polycrystalline material, whose melting point is about 325 ℃. In its infrared spectrum, a high intensity band is at about 1 650 cm^- 1. This band is typical of the conjugated C =N stretching vibration, which shift to higher frequency in relation to the free ligand of salicylaldehyde with aniline. A very weak band at 1 248 cm^-1 is assigned to ph-O stretching vibration, which is weaker than that of the free ligand of salicylaldehyde with aniline. New band at 655 cm^-1 is assigned to Ca-O stretching vibration. Its ethanol solution can emits intense blue fluorescence with peak wavelength of 491 nm and its powder also emits intense blue fluorescence with peak wavelength of 449.7 nm under UV irradiation. The redshift of 41.3 nm of fluorescence peak wavelength of 2 (salicylaldehyde with aniline)-(1,10-phenanthroline) calcium in ethanol solution relative to its powder state is caused by solvent effect. Its UV absorption bands are at about 222,258,325 and 388 nm, respectively. The absorption bands at about 222 nm and 258 nm are attributed to intrinsic at about 325 nm and 388 nm are assigned to intrinsic absorp absorption of benzene ring. The absorption band tion of C =N. Its optical gap is about 2.93 eV, which was determined by intrinsic absorption band edge of 2 (salicylaldehyde with aniline)-( 1,10-phenanthro- line) calcium in ethanol solution. Its fluorescence excitation spectrum has two excitation bands located at 361.5 nm and 409.5 nm, respectively. Its fluorescence orig

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期刊信息
  • 《发光学报》
  • 中国科技核心期刊
  • 主管单位:中国科学院
  • 主办单位:中国物理学会发光分会 中国科学院长春光学精密机械与物理研究所
  • 主编:申德振
  • 地址:长春市东南湖大路3888号
  • 邮编:130033
  • 邮箱:fgxbt@126.com
  • 电话:0431-86176862
  • 国际标准刊号:ISSN:1000-7032
  • 国内统一刊号:ISSN:22-1116/O4
  • 邮发代号:12-312
  • 获奖情况:
  • 物理学类核心期刊,2000年获中国科学院优秀期刊二等奖,中国期刊方阵“双效”期刊
  • 国内外数据库收录:
  • 美国化学文摘(网络版),荷兰文摘与引文数据库,美国工程索引,美国剑桥科学文摘,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊(2004版),中国北大核心期刊(2008版),中国北大核心期刊(2011版),中国北大核心期刊(2014版),中国北大核心期刊(2000版)
  • 被引量:7320