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研究了5种新型的具有不同结构的α-异(哑心)唑偶氮基-β-二酮类衍生物的红外光谱和紫外光谱, 讨论了它们的酮式-烯醇式以及偶氮式-腙式之间的互变异构化现象. 结果表明, 所有化合物无论以固体形式或在溶液中均以腙式二酮体和偶氮式烯醇体的混合形式存在. 各化合物的紫外吸收谱均呈双峰状, 峰值分别处于246~262 nm和326~339 nm之间, 其中, 高波长吸收峰的强度明显高于低波长吸收峰强度, 说明了各化合物中偶氮式烯醇体形式均多于腙式二酮体形式, 其原因是由于各化合物中偶氮式烯醇体的异构体较多, 且易以分子内氢键形式形成六元环, 有利于结构稳定. 相似文献
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Spectroscopy and Optical Properties of Novel Metal(Ⅱ)-Azo Complex Films in Blue-Violet Light Region 下载免费PDF全文
A novel azo derivative,α-(2-azoxyisoxazole)-β-diketone derivative (ADD),and its copper (Ⅱ) and nickel (Ⅱ) complex (CuADD and NiADD) films have been prepared respectively by spin-coated method.The absorption spectra of the films on a K9 glass substrate in the 300-800 nm wavelength region have been measured.The optical constants (complex refractive index N=n iκ) and thickness of the complex films on a single-crystal silicon substrate in the 300-600nm wavelength region have been investigated on an improved rotating analyser-polariser (RAP) type of scanning ellipsometer,and the dielectric constants ε(ε=ε1 iε2),absorption coefficients α as well as reflectance R of the films were calculated.It is found that the absorption maxima of the ADD,CuADD and NiADD films are at 324nm,372nm and 385nm,respectively,and small absorption values and steep absorption band edges of the CuADD and NiADD films are observed at the 405nm side;The CuADD and NiADD films give high n values of 2.08 and 1.98,and low κ values of 0.2 and 0.28,respectively,at 405nm,and their thicknesses are in the range of 130-150nm;the high reflectivity of 58.5% and 45.5% of the CuADD and NiADD films with Ag as a reflective layer were obtained at the film thicknesses of 70 nm and 80nm respectively.These results show that the novel CuADD and NiADD films seem to be a very promising organic recording material for the next generation of high density digital versatile disc-recordable (HD-DVD-R) systems that use a high numerical aperture of 0.85 at 405nm wavelength. 相似文献
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α-异噁唑偶氮基-β-二酮类衍生物及其互变异构体的光谱 总被引:1,自引:0,他引:1
研究了5种新型的具有不同结构的aα-异噁唑偶氮基-β-二酮类衍生物的红外光谱和紫外光谱,讨论了它们的酮式-烯醇式以及偶氮式.腙式之间的互变异构化现象。结果表明,所有化合物无论以固体形式或在溶液中均以腙式二酮体和偶氮式烯醇体的混合形式存在。各化合物的紫外吸收谱均呈双峰状,峰值分别处于246~262nm和326~339nm之间,其中,高波长吸收峰的强度明显高于低波长吸收峰强度,说明了各化合物中偶氮式烯醇体形式均多于腙式二酮体形式,其原因是由于各化合物中偶氮式烯醇体的异构体较多,且易以分子内氢键形式形成六元环,有利于结构稳定。 相似文献
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5-甲氧基色醇-酸性高锰酸钾-甲醛化学发光体系研究与应用 总被引:1,自引:0,他引:1
在甲醛的存在下 ,5 -甲氧基色醇 (5 - ML)与高锰酸钾在高氯酸介质中发生化学反应 ,能产生很强的化学发光。本文据此采用流动注射技术研究其发光行为 ,对影响化学发光强度的实验因素进行优化 ,建立了快速灵敏测定 5 - ML的化学发光新方法 ,测定方法的线性范围为 2 .0× 10 -8mol/ L— 4 .0× 10 -5mol/ L,检出限为 7.9× 10 -9mol/ L(S/ N=3) ,相对标准偏差为 2 .4 % (5 .7× 10 -7mol/ L5 - ML;n=10 )。该方法应用于脑脊液样品中 5 - ML含量测定 ,回收率达到 86 .0 %— 97.2 %。文中还对体系的化学发光反应机理进行探讨 相似文献
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