Study Of The Mechanism And Application Of Non-deoxygenated Cyclodextrin Induced Room Temperature Phosphorescence

Chapter 1 The development of cyclodextrin-induced room temperature (CD-RTP) in the recent years was reviewed in detail. The effects of the deoxygenation, the addition of the third or the fourth components on CD-RTP were included in this review.Chapter 2 Cyclodextrin induced room temperature phosphorescence was reviewed in detail in the presence of oxygen. The mechanism aspects involve in the space-regulation, core-shell complex, covering effect and the formation of the microcrystals. The third and fourth components include halide alkanes and alcohols, alkanes without heavy atom, alcohols, aliphatic amines and surfactants.Chapter 3 Effect of five cyclic third components, cyclohexane, methylcyclohexane, perfluorocyclohexane, perfluoromethylcyclohexane and adamantane, on cyclodextrin-induced room temperature phosphorescence (CD-RTP) of 1-bromo-naphthalene was studied. It was found that these five compounds could induced intensive RTP, and the enhancement order is as follows: cyclohexane > adamantane > methylcyclohexane > perfluorocyclohexane > perfluoromethylcyclohexane. Dependence of RTP intensity on temperature of these systems show the potential application in developing optical thermometer.Keywords: 1 -Bromonaphthalene, P-cyclodextrin, Room temperature phosphorescence, the Third componenentChapter 4 The RTP of the systems containing of cyclodextrin, NaDC, or sol-gel is observed. The common characteristics is that every system can provide a relative rigid microenvironment, which can prevent the phosphor from quenching by the oxygen and the other quenchers. It is found that the order of the rigidity degree of these system is as follows: CD/BrN/CH>CD/BrN/Ad>NaDC/BrN>sol-gel/BrN by the means of the measurement of the RTP intensity and lifetime. The mechanism of non-deoxygenated RTP is discussed preliminarily.