Scaffold-like 3D networks fabricated via the organogelation of β-diketone-boron for fluorescent sensing organic amine vapors

• 来源期刊: 科学通报(英文版)
• 学科: 化学
• 年，卷（期）: 2012,（33）
• 页码范围: 4264-4271
• 页数: 8页
• 分类号: O621.25
• 语种: 中文

摘要

A new compoud based on carbazole functionalized β-diketone-boron difluoride(1) was synthesized.It is found that compoud 1 can gel toluene,ethylbenzene and some mixed solvents,and 3D networks consisting lots of nanofibers were observed using SEM and fluorescence microscopy.The molecular packing model in xerogel 1 was proposed according to the results of XRD,UV/Vis absorption and semiempirical calculations.The obtained nanofibers prepared through organogelation can emit strong orange light under irradiation.It is interesting that the fluorescence of the nanofiber-based film can be quenched quickly and significantly upon exposed to the vapors of n-butylamine,dibutylamine,triethylamine,triethylamine,cyclohexylamine,aniline and pyridine instead of other common reagents.Notably,the response time of the nanofiber-based film to aniline vapor reached ca.0.59 s,and the detection limit for aniline was as low as ca.0.83 mL/m 3.