Honeycomb-patterned films fabricated by self-organization of DNA-surfactant complexes.
In this paper, DNA-based honeycomb films were successfully constructed from a simple solution casting process at high relative humidity, through the encapsulation of DNA with a cationic surfactant ditetradecyldimethylammonium (DTDA). Cationic surfactants electrostatically attach to phosphate anions of DNA in a molar ratio of 1:1 in the DNA-DTDA complex. Investigation of the effects of substrate, concentration, and solvent on the morphology of the microporous films demonstrated the wide generality and high reproducibility of the formation of DNA-DTDA self-organized microporous films. The morphology of the microporous structures can be adjusted by slightly changing the concentration of the complex solution. DNA exists in the double helical B-form in the microporous film confirmed by circular dichroism spectrum. Dye molecule rhodamine B was loaded into the DNA-DTDA complex, presenting a fluorescent microporous film. DNA-DTDA complex as a host material provides a new method for tailoring fluorescent microporous films. The DNA-based ordered honeycomb films should be attractive for use in optical and optoelectronic devices, separation, ion transportation, and biosensors.
Sun
Hang
H
State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, PR China.
Li
Wen
W
Wu
Lixin
L
D000818:Animals; D002942:Circular Dichroism; D004247:DNA / Q000737:chemistry*; D005399:Fishes; D006813:Humidity; D009682:Magnetic Resonance Spectroscopy; D008297:Male; D008855:Microscopy, Electron, Scanning; D008970:Molecular Weight; D000644:Quaternary Ammonium Compounds / Q000737:chemistry*; D012235:Rhodamines / Q000737:chemistry; D012997:Solvents / Q000737:chemistry; D055672:Static Electricity; D013501:Surface-Active Agents / Q000737:chemistry*; D013737:Testis; D055548:Vapor Pressure
D000644:Quaternary Ammonium Compounds; D012235:Rhodamines; D012997:Solvents; D013501:Surface-Active Agents; D004247:DNA; C029773:rhodamine B