Author/Authors :
Xiao، نويسنده , , Jinchong and Li، نويسنده , , Junbo and Li، نويسنده , , Cuihong and Huang، نويسنده , , Changshui and Li، نويسنده , , Yuliang and Cui، نويسنده , , Shuang and Wang، نويسنده , , Shu and Liu، نويسنده , , Huibiao، نويسنده ,
Abstract :
An amphiphilic ethynyl-pyrene derivative modified with phosphonic acid groups (PyTOH) was synthesized and characterized. Single-stranded DNA (ssDNA), which carries negative charges, was found to induce the self-assembly of PyTOH through electrostatic interactions with Mg2+ as co-complexation ion in aqueous solution. UV–vis, fluorescence, and circular dichroism (CD) spectra revealed that left-handed helical architecture of PyTOH/Mg2+/DNA was formed. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) showed that nanoscale structures could be fabricated by self-assembly.
Keywords :
SELF-ASSEMBLY , Chiral , ssDNA , Aggregation
