Aggregation Behavior And Fluorescent Sensing Nature Of Anthracene-Centered Cruciforms

This thesis take anthracene as the center, through heck reaction, Wittig reaction synthesized of a series of cross-conjugated compound, and did intensive research in the nature of their aggregation behavior and fluorescence sensing nature.Such compounds all have large two-photon absorption cross section, which provides a good foundation for their application in two-photon field, meanwhile some of the target products have aggregation induced enhancement effect (AIE), also these compounds ’s special end groups having a metal ion complexing capacity, can be used for the sensing of the metal ion, wherein a compound having a phenolic hydroxyl group can also be used for the detection of the alkaline environment.The third chapter describes a class of cruciform compounds containing benzoxazole group (HPBO), most of these compounds have aggregation enhanced effect (AEE), and their specific end groups could complex with zinc ion so that the fluorescence intensity is increased by3-4times, which can achieve fluorescent sensing of zinc ions. The fluorescent color of a compound having phenolic hydroxyl group change in an alkaline environment, and thus it is useful in the alkaline environment detection.Chapter IV presents the series of dibutyl amine or/and the pyridine substituted2,6,9,10-tetravinyl anthracene, and their photophysical properties of pure solution and the solution with the metal ion. The frontier molecular orbitals of these compounds are spatially separated. These cruciform’s pyridyl or dibutyl amine group have a complexing ability with metal ions, we chose several metal ions to study, and found that these compounds had a dedicated sensing properties for transition metal ion.This subject expand the type and range of applications of cruciform compounds, this series of compounds have two-photon absorption property, ion sensing ability, aggregation induced enhancement effect, thus they have a good prospect of application in two-photon fluorescence sensing, the two-photon fluorescence labeling, photodynamic diagnosis and treatment and doublephoton fluorescence microscopy. On the basis of this study, people can also design many other photoelectric material of the nature of the metal ions and the nature of the two-photon, full of novelty and innovation, has important scientific significance and research value.