蒽醌化合物的光解动力学及定量结构-性质关系
PHOTODECOMPOSITION KINETICS AND QUANTITATIVE STRUCTURE-PRORERTY RELATIONSHIP OF ANTHRAQUINONES
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摘要: 以高压汞灯为光源,测定了15种蒽醌化合物(ATQs)的光解速率常数(k),讨论了取代基位置、数目及种类对ATQs光解速率的影响.另外,选取9种氨基蒽醌,应用偏最小二乘(PLS)算法,建立了关于k的定量结构-性质关系(QSPR)模型.根据该模型,决定k值大小的主要因素包括:分子生成热、H原子所带最大正电荷、C原子所带最大负电荷,以及分子最低未占据轨道与最高占据轨道能量差.Abstract: Photolysis rate constants(k)of 15 anthraquinones(ATQs)irradiated by high-pressure mercury lamp were determined and the effects of the position,number and species of substituted group on reaction rate constants were discussed.In order to study the effect of structure properties on reaction rate constants,9 aminoanthraquinones were selected to establish the quantitative structure-property relationship(QSPR),using partial least square(PLS)algorithm and quantum chemical descriptors.It can be concluded that the factors affecting lgk of ATQs were the heat of formation,the most positive net atomic charges on a hydrogen atom,the largest negative atomic charge on a carbon atom,and the energy gap between the lowest unoccupied molecular orbital and the highest occupied molecular orbital.
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Key words:
- anthraquinones /
- photolysis /
- rate constant /
- QSPR
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[1] 王连生,有机污染化学.北京:高等教育出版社,2004,75-100
[2] 丁光辉,PLS和GA应用于部分有机污染物的QSAR研究.大连理工大学硕士学位论文,2006,64-73
[3] 牛军峰,余刚,施玮,苯酚类化合物光解量子产率与结构性质的定量关系.中国环境科学,2004,24(1):81-84
[4] Allen N S,Bentley P,Mckellar J F,The Light Fastness of Anthraquinone Disperse Dye on Polyethylene Terephthalate,Journal of the Society of Dyers and Colourists,1975,91:366-369
[5] Eriksson J,Green N,Marsh G et al,Photochemical Decomposition of 15 Polybrominated Diphenyl Ether Congeners in Methanol/Water.Environmental Science Technology,2004,38(11):3119-3125
[6] Ponomareva R P,Studzinskii O P,Photolysis of Aminoanthraquinones in Matrices.Russian Journal of General Chemistry,2001,71(5):759-762
[7] 于顺平,蒽醌型分散染料的化学结构对颜色耐光牢度和升华度的影响.四川纺织科技,1994,(4):30-33
[8] 卢桂宁,党志,陶雪琴等,多环芳烃光解活性的量子化学研究.环境化学,2005,24(4):459-462
[9] Giles C H,Sinclair R S,Photodecomposition of Anthraquinone Disperse Dyes on Polyethylene Terephthalat Journal of the Society of Dyers and Colourists,1973,89:54-56
[10] 李宗石,程侣柏,分子轨道理论在染料化学中的应用(V)-用P.P.P.自洽场-组态相互作用分子轨道方法计算蒽醌衍生物的吸收光谱.高等学校化学学报,1982,4(3):509-515 -

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