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Ogawa Y, Arikawa Y, Kida T, et al. Fabrication of novel layer-by-layer assembly films composed of poly(lactic acid) and polylysine through cation-dipole interactions. Langmuir. 2008;24(16):8606-9doi: 10.1021/la800788e.
Ogawa, Y., Arikawa, Y., Kida, T., & Akashi, M. (2008). Fabrication of novel layer-by-layer assembly films composed of poly(lactic acid) and polylysine through cation-dipole interactions. Langmuir : the ACS journal of surfaces and colloids, 24(16), 8606-9. https://doi.org/10.1021/la800788e
Ogawa, Yuji, et al. "Fabrication of novel layer-by-layer assembly films composed of poly(lactic acid) and polylysine through cation-dipole interactions." Langmuir : the ACS journal of surfaces and colloids vol. 24,16 (2008): 8606-9. doi: https://doi.org/10.1021/la800788e
Ogawa Y, Arikawa Y, Kida T, Akashi M. Fabrication of novel layer-by-layer assembly films composed of poly(lactic acid) and polylysine through cation-dipole interactions. Langmuir. 2008 Aug 19;24(16):8606-9. doi: 10.1021/la800788e. Epub 2008 Jul 03. PMID: 18597503.
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Langmuir. 2008 Aug 19;24(16):8606-9. doi: 10.1021/la800788e. Epub 2008 Jul 03.

Fabrication of novel layer-by-layer assembly films composed of poly(lactic acid) and polylysine through cation-dipole interactions.

Langmuir : the ACS journal of surfaces and colloids

Yuji Ogawa, Yuya Arikawa, Toshiyuki Kida, Mitsuru Akashi

Affiliations

  1. Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Japan.

PMID: 18597503 DOI: 10.1021/la800788e

Abstract

Novel layer-by-layer (LbL) assembly films composed of poly( L-lysine) (PLL) and poly( D-lactic acid) (PDLA) were prepared by the alternate immersion of a gold substrate into an aqueous PLL solution and an acetonitrile solution of PDLA. The formation of the LbL assembly film was confirmed by quartz crystal microbalance (QCM) analysis, atomic force microscopy observation, and attenuated total reflection Fourier transform infrared spectroscopy measurement. The driving force responsible for the LbL assembly was determined by investigating the formation behavior of the LbL assembly under various conditions. The formation of the LbL assembly was not affected either by the stereochemistry of polylysine and poly(lactic acid) or by the addition of urea, which is known to inhibit hydrogen bonding interaction between polymers, into the aqueous PLL solution. The LbL assembly was also formed by the combination of PDLA and polycations other than polylysine, such as poly(diallyldimethylammonium chloride). On the other hand, the combination of PDLA and any polyanions such as poly(styrene sulfonate sodium salt) produced little corresponding LbL assembly. The increase in positive charge on the amino nitrogen atom of PLL enhanced the LbL assembly. These results suggest that the LbL assembly film composed of PLL and PDLA was fabricated by cation-dipole interactions between the positive charge on the amino nitrogen atom of PLL and the lone pairs of the carbonyl oxygen atom of PDLA.

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