Synthesis and Characterization of 1,3,2-Benzodiazaboroles Substituted Tricarbazole and Benzo[4,5]imidazo[1,2-f]phenanthridine and Their Applications in Blue PhOLEDs and Anion Detection

• Main Authors: Huei-Sin Wang, 王卉欣
• Other Authors: 梁文傑
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/52629x

碩士 === 國立臺灣大學 === 化學研究所 === 107 === In the past, the materials of organic light emitting diodes only had carbon and nitrogen atoms, so we replace C=C to B-N in indoles by using the concept of isostere, letting organoboron compounds appeared in the materials of organic light emitting diodes, then synthesize a series of 1,3,2-benzodiazaborole derivatives. This series of 1,3,2-benzodiazaborole derivatives has 10πeletron and empty pz orbital, leading to its special electroluminescence properties. Having boron atoms, let the LUMO of these compounds get higher. Moreover, we enhance Tg of these series of 1,3,2-benzodiazaborole derivatives by increasing the molecular weight and making the structure rigid in order to stablize the film using in organic light emitting diodes. Besides, the anion detection experiments show that many kinds of anions in the solutions can let the photophysical properties of compounds change. In the case of fluoride ion, adding the fluoride ion to the soluton of compounds leads to fluorescence quenching immediately. In the case of hydroxide ion, the result is as same as fluoride ion. However, in terms of dihydrogen phosphate and dihydrogen pyrophosphate, we discover that fluorescence of the compound will red-shift along with time. Up to now, we think that 1,3,2-benzodiazaborole derivatives can detect multi-anion, and it has potential to become chemosensor.