N-乙基哌啶存在下β-环糊精诱导α-溴代萘室温磷光  

Room Temperature Phosphorescence of α-Bromonaphthalene Induced by β-Cyclodextrin in the Presence of N-Ethylpiperidine

作　　者：彭景吓[1] 张勇[1] 

机构地区：[1]近海海洋环境科学国家重点实验室(厦门大学)厦门大学环境科学研究中心,福建省厦门市361005

出　　处：《光谱实验室》2010年第6期2378-2382,共5页Chinese Journal of Spectroscopy Laboratory

基　　金：国家自然科学基金(21075102);教育部留学回国人员科研启动基金

摘　　要：微量N-乙基哌啶(EP)存在下,由于三元包络物α-溴代萘(α-BrN)/β-环糊精(β-CD)/EP的形成,不经除氧就可观察到强而稳定的室温磷光(RTP)发射。详细研究了温度、pH值以及形成包络物的3种组分物质浓度的变化对体系RTP的影响,并探讨了EP存在下所研究体系的RTP发光机理。在优化实验条件下,体系RTP的强度与α-溴代萘的浓度在3.0×10^(-7)—1.5×10^(-5)mol·L^(-1)范围内呈良好线性关系,α-BrN的检出限为7.2×10^(-9)mol·L^(-1)。将所建方法用于合成样品中α-BrN的测定,实验结果表明该方法的加标回收率为94.7%,相对标准偏差为1.47%(n=7)。A strong and stable room temperature phosphorescence（RTP） emission was observed from the ternary inclosing complex of α-Bromonaphthalene （ α-BrN ）/β-cyclodextrin （β-CD）/N-ethylpiperidine （EP） without deoxygenation in the presence of micro amount of EP. The effects of temperature,pH values and the variation of concentrations of each component on RTP were investigated, and the luminescence mechanism of RTP in the presence of EP was also discussed. Under the optimal conditions, the analytical curve of α-BrN obtained a good liner range of 3.0 × 10-7- 1.5 × 10-5mol. L-1 with detection limit of 7. 2 × 10-9 mol · L-1. The method was applied to determination of the concentration of α-BrN in synthetic samples,of which the additional standard recovery was 94.7% with a relative standard deviation was 1. 47%（n=7）.

关 键 词：室温磷光 Β-环糊精 Α-溴代萘 N-乙基哌啶 

分 类 号：O657.39[理学—分析化学]