新罗丹明衍生物的合成及其分子内能量传递  

Synthesis and intramolecular energy transfer of novel rhodamine compound

作　　者：雷永林[1] 

机构地区：[1]西南科技大学材料科学与工程学院,四川绵阳621010

出　　处：《化学试剂》2009年第8期581-583,645,共4页Chemical Reagents

基　　金：国家自然科学基金资助项目(20774076);四川省教育厅重点项目(2005A139);西南科技大学青年预研基金资助项目(07zx3138)

摘　　要：通过乙基桥把接上供电子基团哌嗪的1,8-萘酰亚胺与罗丹明B相连,合成了新的罗丹明衍生物,研究了基态下新罗丹明衍生物各发色团之间的相互作用,以及新罗丹明衍生物荧光发射光谱及分子内能量传递。结果表明,由于合成的新罗丹明衍生物发色团之间的给电子作用,导致对比罗丹明B及4-哌嗪-1,8-萘酰乙醇亚胺的最大吸收峰红移,在激发态下4-哌嗪-1,8-萘酰乙醇亚胺-罗丹明B二元体系发生了分子内能量传递,当以400、450、480nm激发时,随激发波长向长波方向靠近,所吸收的能量传递给了长波色素分子团罗丹明趋势变大。The novel rhodamine compound containing 1,8-napthalimide with a donor group piperazinyl and rhodamine B linked via ethylene bridge was synthesized.The interaction between the novel rhodamine dichromophor in ground state was studied,and the fluorescent spectra and intra-molecular energy transfer of novel rhodamine compound were also investigated.The experimental results showed that compared with N-ethanol-4-piperazinyl-1,8-napthalimide and rhodamine B,the red-shift of maximum absorbing peaks relating to novel rhodamine compound occurred,which was resulted from the mutual donor effect between the novel rhodamine dichromophor.The occurrence of photo induced electron transfer from a N-ethanol-4-piperazinyl-1,8-napthalimide molecule to an rhodamine molecule in the excited state was observed.Moreover,the excitation wavelength was close to the long-wave direction,making the trend of the absorbing energy transfer to rhodamine,so that the long wave pigment molecule became larger after being exc ited at wavelengths of 400,450 and 480 nm,respectively.

关 键 词：罗丹明 1 8-萘酰亚胺 双发色团 荧光光谱 能量传递 

分 类 号：O644[理学—物理化学]