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在外部重原子微拢剂溴代环己烷存在下,β-CD/碘代乙基联苯体系可发射一定强度的室温磷光信号,若丁醇作为第四组分存在,则能显著提高体系的室温磷光发射强度。研究了该体系室温磷光发射的适宜条件和多种醇、不同环糊精及其衍生物的影响。认为β-CD/碘代乙基联苯/溴代环己烷/丁醇体系属于一种超分子组合的发光体系,醇的作用属典型的分子调控作用。β-CD/碘代乙基联苯/溴代环己烷形成主、客三元包结物,而醇则利用其羟基与CD端口羟基形成氢键,其烷基键借助于疏水相互作用力,覆盖在CD上、下端口,对外部氧向CD腔内的扩散起着隔离作用,减少了三线态氧对发光体激发三线态的猝灭,从而显著提高了体系室温磷光发射强度
The β-CD / iodoethylbiphenyl system emits a certain intensity of room-temperature phosphorescence signal in the presence of brominated cyclohexane, an external heavy-atom pulverizer. If butanol is present as the fourth component, the system can be significantly improved Room temperature phosphorescence emission intensity. The suitable conditions of room temperature phosphorescence emission and the effects of many alcohols and different cyclodextrins and their derivatives were studied. It is believed that the β-CD / iodoethylbiphenyl / bromocyclohexane / butanol system belongs to a luminescent system with a supramolecular combination, and the action of the alcohol belongs to the typical molecular regulation. The β-CD / iodoethylbiphenyl / bromocyclohexane forms the main and guest triplets, whereas the alcohol utilizes its hydroxyl group to form a hydrogen bond with the hydroxyl on the CD port, the alkyl bond of which by means of the hydrophobic interaction force , Covering the upper and lower ports of the CD, isolates the diffusion of the external oxygen into the CD cavity, reduces the quenching of the triplet state excited by the triplet oxygen, and significantly increases the room temperature phosphorescence emission intensity