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Õª Òª Éè¼Æ²¢ºÏ³ÉÁËÒ»ÖÖÐÂÐ͵嬶þ±½°·»ùÍŵÄÂÝÜÌ»¯ºÏÎï2£¬7-Ë«¶þ±½°·-ÂÝ»·-[ÜÌ-7,9¡¯-±½²¢ÜÌ](DDSF), ²¢Í¨¹ýÁË1HNMR¡¢MS¡¢IR¡¢ÔªËØ·ÖÎöͼÆ×¼ìÑ飬ÿ²½·´Ó¦µÄ²úÂʾùÔÚ70%ÒÔÉÏ¡£ÀûÓÃ×ÏÍâ¿É¼ûÎüÊÕ¹âÆ×¡¢Ó«¹â¹âÆ×ºÍÑ»··ü°²·¨µÈÑо¿ÁËÆäHOMOÄܼ¶¡¢LUMOÄܼ¶¼°·¢¹âÐÔÄÜ¡£DDSFÔÚÕý¼ºÍéÖеÄ×ÏÍâ¿É¼ûÎüÊÕ¹âÆ×µÄÈý¸öÎüÊÕ·åΪ293nm¡¢339 nm¡¢381nm£¬ÔÚ¶þÂȼ×ÍéÖÐΪ294nm¡¢347 nm¡¢385nm£¬ÎüÊÕ´ø±ßΪ417nm£¬¼ÆËãÄܼ¶²îΪ2.97eV¡£DDSFÔÚ¼«ÐÔ²»Í¬µÄÈܼÁÖеÄÓ«¹â·¢Éä¹âÆ×´æÔڽϴóµÄ²îÒ죬ÔڷǼ«ÐÔÈܼÁÖеķ¢É䲨³¤Îª402nm,±íÏÖ³öÁ¼ºÃµÄ·¢À¶¹âµÄÌØÐÔ£¬¶øÔÚ¼«ÐԽϴóµÄÈܼÁÖеķ¢É䲨³¤Îª504nm,±íÏÖ³ö·¢Â̹âµÄÐÔÄÜ¡£Í¨¹ýÑ»··ü°²·¨²âµÃÆäÑõ»¯·åµçλΪ0.77V£¬ÍÆËã³öDDSFµÄHOMOÄܼ¶Îª-5.10eV,LUMOÄܼ¶Îª-2.13eV¡£ Abstract 2,7-di-diphenylamine-spiro[fiuorene -7,9¡¯-benzofluorene](DDSF) was successfully synthesized .Its structure was determined by 1HNMR¡¢MS¡¢IR and Elemental Analysis.Yield of each reaction was more than 70%.Its HOMO,LUMO,and luminescence characteristices were studied by UV-Vis absorption spectra,cyclic voltammetry method and fluorescence spectra. The absorption spectrum of DDSF in dilute n-hexane with an absorption peak at 293nm¡¢339nm¡¢381nm,compare with in dilute dichloromethane is 294nm¡¢347nm¡¢385nm,by the edge of UV absorption 417nm,we can calculate energy gap of DDSF is 2.97eV. In different polar solvents, the fluorescence emission spectra of DDSF has a great difference ; the emission wavelength is 402nm in the non-polar solvents, showing a good blue light emitting properties, and the emission wavelength is 504nm in the larger polar solvents, showing the green performance.By cyclic voltammetry and the gap we calculate the HOMO energy and LUMO energy of DDSF are -5.10V and -2.13V,respectively. |
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q279064210
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