| Acidichromism of indolinospirooxazines in isopropanol |
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| 作者姓名： | 梁永超 明阳福 樊美公 Knobbe E.T. |
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| 作者单位： | Institute of Photographic Chemistry，Chinese Academy of Sciences，Beijing 100101，China，Institute of Photographic Chemistry，Chinese Academy of Sciences，Beijing 100101，China，Institute of Photographic Chemistry，Chinese Academy of Sciences，Beijing 100101，China，Department of Chemistry，Oklahoma State University，Stillwater OK 74078-0447，USA |
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| 基金项目： | Project supported by the National Natural Science Foundation of China，the Chinese Academy of Sciences |
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| 摘 要： | 1,3,3-tnmethyl-spiromdolino-2,3'-2H]naphtho2,1-b] 1,4]oxazine(SP1) and 1,3,3-trimen-thyl-9-methoxy-spiroindolino2,3'-2H]naphtho2,1-b] 1,4]oxazine] (SP2) react with hydrochloric acid to form the complex SP HCl in isopropanol solution at room temperature The absorption maxima of these complexes are 440 and 463 nm respectively In acidic media,the opening form of spirooxazine can react with hydrochloric acid to form the complex PMC HCl via zwittenon form The absorption spectra of PMC HCl are obviously hypsochromic shifted compared with the reported spectra of the complex in neutral media In the mean time,the thermal stability of the complex is increased.The first order kinetics for the decoloration process of the acidichromic product of the opening form was determined and the lifetimes of these products are 180 and 200 s,respectively.
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| 收稿时间： | 22 March 1997 |
Acidichromism of indolinospirooxazines in isopropanol |
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| Liang Yongchao,Yangfu Ming,Meigong Fan,Xiaodong Sun,E. T. Knobbe.Acidichromism of indolinospirooxazines in isopropanol[J].Science in China(Chemistry),1997,40(5):535-540. |
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| Authors: | Liang Yongchao Yangfu Ming Meigong Fan Xiaodong Sun E T Knobbe |
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| Institution: | (1) Institute of Photographic Chemistry Chinese Academy of Sciences, 100101 Beijing, China;(2) Department of Chemistry, Oklahoma State University, Stillwater OK 74078-0447, USA |
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| Abstract: | 1,3,3-tnmethyl-spiromdolino-2,3'-2H]naphtho2,1-b] 1,4]oxazine(SP1) and 1,3,3-trimen-thyl-9-methoxy-spiroindolino2,3'-2H]naphtho2,1-b] 1,4]oxazine] (SP2) react with hydrochloric acid to form the complex SP HCl in isopropanol solution at room temperature The absorption maxima of these complexes are 440 and 463 nm respectively In acidic media,the opening form of spirooxazine can react with hydrochloric acid to form the complex PMC HCl via zwittenon form The absorption spectra of PMC HCl are obviously hypsochromic shifted compared with the reported spectra of the complex in neutral media In the mean time,the thermal stability of the complex is increased.The first order kinetics for the decoloration process of the acidichromic product of the opening form was determined and the lifetimes of these products are 180 and 200 s,respectively. |
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| Keywords: | acidichromism photochromism spirooxazine absorption spectra |
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