Investigation of Superamolecule Assembled Room Temperature Phosphorescence of Pyrene/β-Cyclodextrin Without Deoxygenation
The characteristics of cyclodextrin induced room temperature phosphorescence(CD-RTP) of pyrene were investigated without deoxygenation by 1,2-dibromocyclohexane(DBCH) or bromocyclohexane(BCH) as a heavy atom perturber.The experimental results indicated that the linear range of analytical curve of CD-RTP of pyrene was 1.0×10-6-3.0×10-5 mol/L in the presence of DBCH,the detection limit was 1.0×10-7 mol/L,with a relative standard deviation of 5.2%;and those were 9.0×10-7-1.0×10-6 mol/L,2.0×10-7 mol/L,and 1.2%,respectively,in the presence of BCH.Compared with the traditional CD-RTP with deoxygenation,the present method was rapid and facile.The method with DBCH as a heavy atom perturber was applied to the determination of pyrene in practical samples,such as polluted water and sludge of coking factory,sewage,cigarette and soft coal,the average recoveries of them in samples were from 95.5% to 102.4%.The method is trustful and the results are satisfactory.