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4,4′-(9-(正十六烷基)咔唑-3,6-取代)二(6-(4-二苯胺苯基)-2,2-二氟-1,3,2(2H)-二氧杂环己烷硼)(简称BDOBC16)是一种含β二酮硼二氟取代基团的共轭有机发光分子,将其组装到3-氨丙基三乙氧基硅烷(APTES)修饰的SBA-15孔道中。研究发现,BDOBC16分子中的氟硼键未发生分解,且BDOBC16的发光性质发生了很大变化。客体BDOBC16本身在紫外光激发下发红光,而当其组装到硅烷化SBA-15孔道内后,BDOBC16被紫外光激发后发绿光,且组装后BDOBC16发光强度增强了75倍。研究结果表明,主客体分子之间的较强氢键作用是客体分子组装前后发光强度发生巨大变化的主要原因;另外,客体分子的高度分散有利于BDOBC16发光强度的提高,客体分子集聚对其发光有严重的淬灭作用。
(9- (n-hexadecyl) carbazole-3,6-disubstituted) bis (6- (4- diphenylaminophenyl) -2,2-difluoro-1,3,2 2H) -dioxaneboron) (BDOBC16) is a conjugated organic light-emitting molecule containing a β-diketone-bifluoro-substituted group, which is incorporated into 3-aminopropyltriethoxysilane APTES) modified SBA-15 wells. It was found that the fluorine-boron bond in BDOBC16 molecule did not decompose, and the luminescent properties of BDOBC16 changed greatly. The guest BDOBC16 itself emits red light upon UV excitation, whereas BDOBC16 emits green light upon UV light excitation when assembled into the silanated SBA-15 cell and increases the luminescence intensity of BDOBC16 by a factor of 75 after assembly. The results show that the strong hydrogen bonding between host and guest molecules is the main reason for the great change of luminescence intensity before and after the assembly of guest molecules. In addition, the highly dispersed guest molecules are beneficial to the increase of luminous intensity of BDOBC16. A serious quenching effect.