| 溴甲酚绿-稀土配合物的热变色性能及变色机理 |
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| 引用本文： | 傅成武,周豪慎,陈明清.溴甲酚绿-稀土配合物的热变色性能及变色机理[J].功能材料,2012,43(18):2523-2526. |
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| 作者姓名： | 傅成武 周豪慎 陈明清 |
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| 作者单位： | 江南大学化学与材料工程学院,食品胶体与生物技术教育部重点实验室,江苏无锡214122 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 以稀土金属离子(La3+、Ce3+和Nd3+等)为显色剂,溴甲酚绿为发色剂和配位剂,制备了一系列稀土配合物可逆热变色材料,测试其综合变色性能,讨论了显色剂种类及用量、溶剂用量对稀土配合物热变色性能的影响。FT-IR、UV-Vis和DSC测试结果表明,热变色机理可归结为分子间的电子得失,随着温度变化,溴甲酚绿的结构在内酯式和醌式之间转变,颜色随之改变。
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| 关 键 词： | 溴甲酚绿 稀土配合物 热变色 |
Thermochromic properties and mechanism of BCG-rare earth composite materials |
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| FU Cheng-wu,ZHOU Hao-shen,CHEN Ming-qing.Thermochromic properties and mechanism of BCG-rare earth composite materials[J].Journal of Functional Materials,2012,43(18):2523-2526. |
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| Authors: | FU Cheng-wu ZHOU Hao-shen CHEN Ming-qing |
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| Affiliation: | (The Key Laboratory of Food Colloids and Biotechnology,Ministry of Education, School of Chemical and Material Engineering,Jiangnan University,Wuxi 214122,China) |
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| Abstract: | A series of thermochromic composite materials composed of bromocresol green(BCG) and rare earth metal ions were prepared.The effects on thermochromism by the sort and ratio of delomorphic reagent and solvent were studied.Based on the identification of FT-IR,UV-Vis and DSC analysis,the thermochromic mechanism of composites were summarized for electron gain or loss among the molecules.At room temperature,quinonoid BCG is coordinated with rare earth metal ions.After warming,the complex was separated,lactone ring structure is recurring on BCG.Therewith,the color inversion can be realized with temperature variation. |
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| Keywords: | bromocresol green rare earth composite material thermochromism |
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