Novel hybrid materials with covalent bonding and rare earth ions-induced enhancing luminescence of bridged 9-amino acridine

作者：Yan Bing^*; Zhou Bing; Wang Qian Ming

来源：Journal of Luminescence, 2007, 126(2): 556-560.

DOI：10.1016/j.jlumin.2006.10.010

• 9-amino acridine
• luminescence
• molecular hybrids
• covalently bonded
• 3-(triethoxysilyl)-propyl isocyanate
• rare earth ions
• sol-gel

Covalently bonded silicate/modified acridine luminescent composites have been prepared from 3-(triethoxysilyl)-propyl isocyanate (TEPIC) grafted 9-amino acridine and central metal ions. The existence of covalent linkages between TEPIC and silica matrices was introduced after hydrolysis and polycondensation processes of ethoxysilyl groups. Luminescence spectra were utilized to characterize the photophysical properties of the obtained hybrid material and the above spectroscopic data reveal that the lanthanide ions and such covalent bonds trigger the increasing blue emission intensities (4-10 times) of modified acridine. Scanning electron micrographs inferred that the hybrids were quite homogeneous and free from phase separation.

• 出版日期2007-10
• 单位同济大学