摘要
在无任何保护性介质存在下， 仅以Ｎａ２ＳＯ３ 作化学除氧剂， ＫＩ为重原子微扰剂， 芴、苊即能产生强而稳定的流体室温磷光发射． 最大激发和发射波长分别为λｅｘ／λｅｍ ＝ ２８４ｎｍ／４７１ｎｍ 、２８５ｎｍ／４９３ ， ５１２ｎｍ ． 不同有机溶剂及其用量对其ＲＴＰ发射性质有不同影响． １ ％ 乙腈存在时， 芴浓度在０－８０ ～８－０μｍｏｌ／Ｌ和８－０ ～４０μｍｏｌ／Ｌ 范围； 苊浓度在０－８０ ～２－８μｍｏｌ／Ｌ 和２－８ ～４－０μｍｏｌ／Ｌ范围， 与其ＲＴＰ强度呈良好的线性关系， 检出限分别为３２ 、３１ｎｍｏｌ／Ｌ．
A strong and stable room temperature phosphorescence signal of fluoren or acenaphthene aqueous solution in the absence any protecting medium can be induced only by using Na 2 SO 3 as deoxygenator and KI as heavy atom perturber. The maximum RTP intensity wavelenths are λ ex /λ em =284 nm/471 nm or 285 nm/493,512 nm respectively. The kind and amount of organic solvents added to the system have differential effects on the RTP properties. In the three kind of organic solvent tested,the effect of acetonitrile on the RTP of both fluoren and acenaphthene is much less than that of alcohol or acetone.Under the present of 1%(V/V) acetonitrile,the RTP intensity is linear to fluoren or acenaphthene concentration in the range of 0 8～8 0 μmol/L and 8 0～40 μmol/L or 0 8～2 8 μmol/L and 2 8～40 μmol/L,the detection limit is 32 or 31 nmol/L respectively.
出处
《福州大学学报（自然科学版）》
CAS
CSCD
1999年第S1期148-150,共3页
Journal of Fuzhou University(Natural Science Edition)
基金
国家自然科学基金!(29775013)
关键词
芴
苊
无保护流体室温磷光
有机溶剂
fluoren
acenaphthene
non-protected fluid room temperature phosphorescence
organic solvent
