Related Experiment Video
Updated: Apr 7, 2026

Extraction and Characterization of Surfactants from Atmospheric Aerosols
Published on: April 21, 2017
Spectroscopic study on interaction between three cationic surfactants with different alkyl chain lengths and DNA
Lili Guo1, Zhaohong Zhang1, Heng Qiao1
1School of Environmental Science, Liaoning University, Shenyang 110036, China.
Abstract:
In this study, the interaction between cationic surfactants with different alkyl chain lengths, such as hexyltrimethyl ammonium bromide (HTAB), dodecyltrimethyl ammonium bromide (DTAB) and cetyltrimethyl ammonium bromide (CTAB), and DNA was investigated by UV-vis spectroscopy, fluorescence spectroscopy and viscosity techniques. The results showed that these three cationic surfactants with different hydrocarbon chain lengths could all interact with DNA. Their binding modes were estimated and their interaction strength was compared. In addition, the effects of the surfactant, NaCl and phosphate ion concentrations on the interaction were reviewed. It is wished that this work would provide some valuable references to investigate the influence of cationic surfactants with different alkyl chain lengths on DNA.
Related Concept Videos
Surface Active Agents
Micelles

