| Summary: | 碩士 === 逢甲大學 === 化學工程學系 === 106 === Fluorescence materials with aggregation-induced emission (AIE) property have attracted lots of interest for their applications in light-emitting、Optoelectronics、fluorescent probe、chemo- and biosensors。Tetraphenylethene (TPE) is a compound that is often referred to as having significant aggregation-induced emission properties. Most research on TPE are mainly small molecule structures. Therefore, our purpose of this study was to investigate the differences in photo-physical properties between TPE small molecules and polymers, as well as the formation and differences of intermolecular -stacks during aggregation-induced emission. We design and synthesis two kinds of TPE derivatives 9 and 10 that are connected to different acceptor substitutions, and to measure their photo-physical properties such as absorption spectrum, fluorescence spectrum, and aggregation-induced emission effect. From the absorption and fluorescence spectra, we find that strength the conjugation chain leads to a red shift in absorption and fluorescence spectra. In aggregation-induced emission test, with the increase of poor solution, the aggregation of polymer also increases. Intramolecular stacking is also more serious. After the thermal stability test, the Td point was between 375 o and 380 o , demonstrating that polymers 9 and 10 have good thermal stability.
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