Effect of Chromophore-Charge Distance on the Energy Transfer Properties of Water-Soluble Conjugated Oligomers
作者:Bin Liu、Brent S. Gaylord、Shu Wang、Guillermo C. Bazan
DOI:10.1021/ja028961w
日期:2003.6.1
The synthesis of 1,4-bis(9,9'-bis(3"-(N,N,N-trimethylammonium)-propyl)-2'-fluorenyl)benzene tetrabromide (C3), 1,4-bis(9,9'-bis(4"-(N,N,N-trimethylammonium)-butyl)-2'-fluorenyl)benzene tetrabromide (C4), 1,4-bis(9,9'-bis(6"-(N,N,N-trimethylammonium)-hexyl)-2'-fluorenyl)benzene tetrabromide (C6), and 1,4-bis(9,9'-bis(8"-(N,N,N-trimethylammonium)-octyl)-2'-fluorenyl)benzene tetrabromide (C8) is reported
1,4-双(9,9'-双(3"-(N,N,N-三甲基铵)-丙基)-2'-芴基)苯四溴化物(C3)、1,4-双(9)的合成,9'-双(4"-(N,N,N-三甲基铵)-丁基)-2'-芴基)苯四溴化物 (C4), 1,4-双(9,9'-双(6"-) N,N,N-三甲基铵)-己基)-2'-芴基)苯四溴化物(C6)和1,4-双(9,9'-双(8"-(N,N,N-三甲基铵)-报道了辛基)-2'-芴基)苯四溴化物(C8)。C3-C8 和受体五钠 1,4-bis(4'(2",4"-bis(butoxysulfonate)-styryl)styyl)-2-(butoxysulfonate)-5-甲氧基苯 (3) 之间的荧光能量转移实验,荧光素标记的单链 DNA 和荧光素标记的双链 DNA 在水中、缓冲液、和甲醇揭示了疏水力和静电力在确定发色团-发色团紧密接近度方面的重要性。在水中,具有较长侧链长度的低聚物显示出更好的能量转移,以及更高的