Recently, layer-by-layer (LbL) assembled multilayer nanofilm has been widely studied for various application. The weak polyelectrolytes such as poly(acrylic acid) (PAA), poly(allylamine hydrochloride) (PAH), poly-L-lysine (PLL), and polyethylenimine (PEI) are suitable candidates for the LbL assembly. Even though many research groups have already reported the various method to tailor nanoscopic features of multilayer film, there are still some limitations. Here, we report a noble CO2 bubble method to precisely modify the multilayer film during LbL assembly. The difference in thickness, surface morphology, and mass between pristine LbL film and CO2-treated film were analyzed by profilometry, atomic force microscopy, scanning electron microscopy, quartz crystal microbalance. The internal structure of the films was explored by analyzing the release of incorporated doxorubicin (DOX) in each film by photoluminescence.
Bibliographical noteFunding Information:
This research was supported by the Bio & Medical Technology Development Program of the National Research Foundation of Korea (NRF) funded by the Korean Government (Grant 2012M3A9C6050104 ) and supported by the National Research Foundation of Korea (NRF), funded by the Korean Government Ministry of Science, ICT & Future Planning (Grant 2013R1A1A1076126 ). Additionally, this research was also supported by a grant of the Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI) , funded by the Ministry of Health & Welfare, Republic of Korea (Grant HI14C-3266 , HI15C-1653 ).
All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)