CAJ | 학술논문

用4-取代二苯乙二酮和对苯二甲醛在乙酸和乙酸铵的存在下加热反应,合成了系列2-(4-甲酰苯基)-4,5-二(4-取代苯基)咪唑衍生物,用核磁共振、质谱和元素分析方法进行了表征.测定了它们的线性吸收光谱、单光子荧光光谱、荧光量子产率和双光子吸收截面,发现这类2,4,5-三苯基咪唑类化合物均具有较好的双光子诱导蓝光发射性能.双光子诱导荧光法测定结果显示,这类蓝光发射的咪唑类化合物中,最大的双光子吸收截面高达123.8GM,最高的荧光量子产率达96.1%.
용4-취대이분을이동화대분이갑철재을산화을산안적존재하가열반응,합성료계렬2-(4-갑선분기)-4,5-이(4-취대분기)미서연생물,용핵자공진、질보화원소분석방법진행료표정.측정료타문적선성흡수광보、단광자형광광보、형광양자산솔화쌍광자흡수절면,발현저류2,4,5-삼분기미서류화합물균구유교호적쌍광자유도람광발사성능.쌍광자유도형광법측정결과현시,저류람광발사적미서류화합물중,최대적쌍광자흡수절면고체123.8GM,최고적형광양자산솔체96.1%.
A series of 2,4,5-triarylimidazoles have been synthesized and characterized. All the four compounds have been identified by way of 1H NMR, MS and elemental analysis. Their linear absorption spectra and single-photon induced fluorescent spectra were measured, too. They were all found to have large two-photon cross-section and very high quantum yields. Especially, the quantum yield of the compound 4-[4,5-Bis-(4- substituted-phenyl)-1H-imidazol-2-yl]-benzaldehyde (compound B) is as high as 96.1%, the two-photon absorption cross-section of compound C is 123.8GM. The quantum yield and two-photon absorption cross-section change obviously by the modifications of end groups.