| This paper consists of four parts: Advances in cyclodextrin induced room temperature phosphorimetry, a study of room temperature phosphorescence of BN induced by P-CD and different surfactants, comparative study of room-temperature phosphorescence of 1-bromonaphthalene induced by synergetic effect of nonionic surfactants and beta-cyclodextrin, and steric considerations in inclusion complexation of modified beta-cyclodextrins with Triton X-100 (TX) and 1-bromonaphthalene (BN).In section 1, the structural characteristics of cyclodextrin , the requirements for formation of host-guest inclusion complexes of cyclodextrins, the discovery of cyclodextrin induced room phosphorescence (CD-RTP) in aqueous solutions and its development and analytical applications were summarized. Phosphorescence-inducing mechanism was reviewed. Advantages and shortcoming of CD-RTP were discussed.In section 2, RTP of BN induced by β-CD was investigated in the presence of surfactants (S) in aerated aqueous solution. It has been found that enhanced RTP arises from the formation of the 1:1:1 ternary inclusion complex. The presence of surfactants greatly improves the environment surrounding BN, and a great fluorescence quenching from TX, decylbenzenesulfonic acid sodium salt(SDBS), benzyldimethyldodecyl ammonium bromide(BDDB) was observed at the same time. Intensity of RTP decreases in the order TX>SDBS>BDDB. Stoichiometry and apparent stability constants of binary inclusion complexes of P-CD: S and ternary inclusion complexes of P-CD: S: BN were estimated by competitive inclusion method and Benesi-Hildebrand method, respectively. Analyses of spectral structure show that the hydrophobic chain of surfactants was partly included in the apolar cavity of P-CD and the polar head group was located outside the cavity coiled up over the top of p-CD, providing an effective protection for RTP. Simultaneously, BN greatly quenches the fluorescence of surfactants containing the phenyl group since these molecules located inside P-CD cavity are closer to the phenyl group in the ternary inclusion complexes. Spectral comparison indicates that nonionic surfactant shows greater phosphorescence enhancement than ionic surfactants. Clearly, RTP from theternary inclusion complexes well correlates with the molecular structure of surfactants. Dependence of RTP o'n surfactants shows that the intensity of RTP decreases after the micellar formation. Quenching effect of I" on RTP of ternary inclusion complexes was also investigated in this experiment.In section 3, room-temperature phosphorescence of BN induced by a combination of OPE-IO(OP) and TX with (3-CD was comparatively studied. The binding mode of OP and TX with β-CD, the interaction between OP, TX and BN, and the stability of ternary inclusion complexes of β-CD, BN and OP (or TX) were also investigated. In terms of molecular size and dimensions of β-CD, the octyl group and phenyl group of OP and TX was incorporated into the cavity of β-CD and the complexes with the stoichiornetry of 1:1 was formed. The removal of water molecules inside the cavity results in the greater apolar interior. The cavity occupied by OP and TX is able to further capture another BN and form close packing 1:1:1 ternary inclusion complexes with apparent stability constant of 1.09xl05 L2/mol2 and 4.47x 105 L2/mol2, respectively. BN shows bright phosphorescence at room temperature due to the greater rigidity in the limited space and the favorable microenvironment shielding from external quenchers and quenching effect on the fluorescence from the phenyl group of OP and TX within the same cavity. In the case of TX, the larger tert-octyl group better shields from external quenchers such as dissolved oxygen and iodide ion. Energy transfer from the excited phenyl group of TX to adjacent BN acceptor was observed.In section 4, the comparison of steric hindrance of inclusion complexes of modified β-CDs with TX and BN was studied by fluorescence and phosphorescence measurements. The effect of temperature, Na2SO3, KI...
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