第 42 卷第 3 期 |  | Vol. 42 No. 3 | 2012 年 6 月 | Jun 2012 |
|
所屬欄目:農藥及中間體
水楊醛縮芳胺類(lèi)Schiff堿的無(wú)溶劑法合成及其光學(xué)性質(zhì) |
唐子龍1,2,顏 林1,2,劉漢文1,2,歐曉明2,3,李 麗1,2
(1. 湖南科技大學(xué) 化學(xué)化工學(xué)院,湖南 湘潭 411201;2. 湖南科技大學(xué) 理論化學(xué)與分子模擬省部共建教育部重點(diǎn)實(shí)驗室,湖南 湘潭 411201;3. 湖南化工研究院,湖南 長(cháng)沙 410007) |
摘 要:以水楊醛和取代苯胺為原料,在無(wú)溶劑條件下合成了一系列Schiff堿,該方法不僅收率高(82%~95%),而且反應時(shí)間短,對環(huán)境污染少。用1H NMR、13C NMR和IR等對產(chǎn)物結構進(jìn)行了確證。同時(shí)還研究了這類(lèi)Schiff堿的紫外和熒光性質(zhì),化合物均具有較強的熒光發(fā)射光譜,發(fā)射峰值波長(cháng)(λem)在470~524 nm。當苯環(huán)鄰、對位引入供電子基時(shí),發(fā)射波長(cháng)明顯紅移,而當間位引人供電子基時(shí),發(fā)射波長(cháng)藍移。苯環(huán)上引入吸電子取代基時(shí),發(fā)射波長(cháng)藍移。 |
關(guān)鍵詞:無(wú)溶劑法;Schiff堿;合成;熒光;紫外 |
中圖分類(lèi)號:O623.731 文獻標識碼:A 文章編號:1009-9212(2012)03-0026-05 |
|
Solvent-free Synthesis and Optical Properties of Schiff Bases Derived from Salicylaldehyde and Substituted Anilines |
TANG Zi-long1,2,YAN Lin1,2,LIU Han-wen1,2,OU Xiao-ming2,3,LI Li1,2
(1. College of Chemistry and Chemical Engineering,Hunan University of Science and Technology,Xiangtan 411201,China;2. Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education,Hunan University of Science and Technology,Xiangtan 411201,China;3. Hunan Research Institute of Chemical Industry,Changsha 410007,China) |
Abstract:A series of Schiff bases were synthesized in 82%~95% yields from salicylaldehyde and substituted anilines in solvent-free systems. All the obtained compounds were characterized with 1H NMR,13C NMR and IR. Their UV-Vis and fluorescent properties were also studied,which demonstrated that the Schiff bases showed stronger fluorescence intensity at em = 470~524 nm. When an electron-donating group was introduced at the ortho- or para- position on the benzene ring,a red-shifted em was observed,while at the meta- position induced a blue-shifted em. When an electron-withdrawing group was introduced onto the benzene ring,a blue-shifted emwas observed. |
Key words:solvent-free;Schiff base;synthesis;fluorescence;ultraviolet |
|
基金項目: 國家科技支撐計劃項目子課題(2011BAE06B01),湖南省教育廳重點(diǎn)項目(No.10A034)、湖南省自然科學(xué)基金項目(11JJ3016),理論化學(xué)教育部重點(diǎn)實(shí)驗室開(kāi)放基金課題(LKF1103)。
|
作者簡(jiǎn)介:唐子龍(1967-),男,湖南邵陽(yáng)人,副教授,博士,從事有機合成研究。(E-mail:zltang67@yahoo.com.cn)
|
收稿日期:2012-05-1
|
|