温度对罗丹明B水溶液荧光强度影响研究  

Study on Effect of Temperature on Rhodamine B Solution Fluorescence Intensity

作　　者：王昊琳 琚敏 徐沛 董开拓 于濂清 

机构地区：[1]中国石油大学(华东)理学院,山东省新能源物理与材料科学重点实验室,山东青岛266580

出　　处：《当代化工》2017年第2期197-200,共4页Contemporary Chemical Industry

基　　金：国家自然科学基金项目,项目号:21476262;大学生创新训练项目,项目号:201610425066

摘　　要：配制了3种不同浓度的罗丹明B(Rh B)水溶液,分别测量其在低温和高温条件下的发射光谱。结果表明,无论在低温过程或高温过程,罗丹明B水溶液的荧光强度都随温度的升高而降低,反之增加。由低温5℃升至室温过程中,荧光强度与温度呈线性关系,在由高温60℃降至室温过程中,60~40℃和40~30℃两个温度区间,温度与荧光强度呈现两种不同的关系,40~30℃温度区间内是线性关系。但高温自然降温至室温的罗丹明B溶液与低温自然升温至室温的罗丹明B溶液荧光光强会发生突变,这表明罗丹明B在低温(0℃)和高温(70℃)下保温时发生了部分不可逆的反应。Fluorescence intensities of three kinds of RhB aqueous solution were measured under low temperature （from 5 ℃ to 30 ℃） and high temperature （from 60 ℃ to 30 ℃）. The results show that the fluorescence intensity decreases with the increase of temperature. Fluorescence intensity has a linear relation with temperature under low temperature; under high temperature, there is an exponential relationship between temperature and fluorescence intensity from 60 ℃ to 40 ℃ and a linear fimction from 40 ℃ to 30 ℃. The fluorescence intensity of RhB solution around 30 ℃ under low temperature is not consistent with that under high temperature, which indicates an Irreversible reaction of RhB molecules at 0 ℃ or 70 ℃.

关 键 词：罗丹明B 荧光光谱法 低温高温 荧光强度突变 

分 类 号：TQ201[化学工程—有机化工]