摘要
研究了在碱性介质中金属离子催化邻硝基苯基荧光酮（ｏ－ＮＰＦ）－Ｈ２Ｏ２体系的化学发光行为。结果表明，在研究的２０多种金属离子中，只有Ｃｏ２＋离子对ｏ－ＮＰＦ－Ｈ２Ｏ２体系有较强的催化发光作用，Ｃｏ２＋的浓度与发光强度在２．５×１０－９～３．０×１０－６ｇ／ｍＬ范围内呈良好的线性关系。通过对化学发光光谱、荧光光谱的研究以及用Ｈｕｃｋｅｌ分子轨道法（ＨＭＯ）计算了ｏ－ＮＰＦ的π电子分布和键级，提出了ｏ－ＮＰＦ可能的化学发光机理．
Catalytic chemiluminescence of over twenty metallic ions in the system of 2,6,7trihydroxyl-9-(2'-nitrophenyl has been tested. Trace amounts of Co (II ) catalysed this chemiluminescence reaction strongly and the chemiluminescence intensity was proportional to the concentration of Co ( II ) in the range of 2. 5 X 10-9-3. 0 X 10-6 g/mL. The optimum conditions for this catalytic chemiluminescence reaction were investigated in detail. A possible mechanism for this catalytic chemiluminescence reaction is proposed on the basis of studying chemiluminescent spectra, fluorescent spectra and Huckel molecular orbital method treatment for the reagent molecule.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1998年第6期684-688,共5页
Chinese Journal of Analytical Chemistry
基金
福建省自然科学基金
关键词
化学发光
邻硝基苯基
荧光酮
钴
NPF
发光
Chemiluminescence, 2, 6, 7-trihydroxyl-9 (2'-nitrophenyl )-3-fluorone, cobalt
