Room-temperature phosphorescence of 1-bromonaphthalene beta-cyclodextrinin anionic surfactant inclusion complexes
- 海洋环境－已发表论文 
Intense room-temperature phosphorescence(RTP) of 1-bromonaphthalene(1-BrN) induced by anionic surfactants(AS) was studied in aerated aqueous beta-cyclodextrin(beta-CD) solution. It has been found that considerably enhanced RTP arises from the formation of the 1:1:1/AS:1-BrN:beta-CD ternary inclusion complex. Analyses of spectral structure and surface tension of solutions suggest that the hydrophobic hardrocarbon chain of surfactants was partly included in the apolar cavity of beta -CD and the part with the polar head group of hydrocarbon chain located outside the cavity coiled over the top of beta-CD, providing an effective protection for RTP. Since it contains a surfactant with a polar head group, the complex precipitate was homogeneously dispersed in aqueous solution and stable RTP was obtained.