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Surface plasmon resonance imaging microscopy of liposomes and liposome-encapsulated gold nanoparticles

  • Lauri Viitala
  • , Adam M. Maley
  • , H. W.Millie Fung
  • , Robert M. Corn
  • , Tapani Viitala
  • , Lasse Murtomäki*
  • *Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArtikkeliTieteellinenvertaisarvioitu

18 Sitaatiot (Scopus)

Abstrakti

Liposomes are small vesicles that can be used in various targeting applications as carrier vehicles. In this paper, we show that real-time surface plasmon resonance imaging microscopy (SPRI microscopy) can be used to detect diffraction patterns of these singular vesicles in water phase at room temperature and without any additives. The diffraction pattern intensities, related to the particle size, are shown to follow the log-normal distribution in a cumulative distribution function (CDF) that is very well in accordance with the normal size distribution of liposomes prepared with the extrusion method. In addition, this distribution is further analyzed to determine the number of gold nanoparticle (GNP) encapsulated liposomes in a set of liposomal adsorption events. Thus, we obtain the encapsulation efficiency and present a method to study the intrinsic properties of liposomes and other soft nanomaterials. (Figure Presented).

AlkuperäiskieliEnglanti
Sivut25958-25966
Sivumäärä9
JulkaisuJournal of Physical Chemistry C
Vuosikerta120
Numero45
DOI - pysyväislinkit
TilaJulkaistu - 17 marrask. 2016
Julkaistu ulkoisestiKyllä
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

Rahoitus

The Academy of Finland is acknowledged for funding via the Programmable Materials Program "Light Triggered Nanoparticles" (OMA, #263453). National Science Foundation is acknowledged for the financial support through the Grant CHE-1403506 (RMC). L.V. thanks Mr. Yuhei Terada, Mr. Gerald Manuel, Ms. Kellen Kartub, and Mr. Brandon Matthews for their valuable help and fruitful discussions on the surface preparation techniques and with the SPRI measurements. This paper made use of the UCI laser facility premises run by Dmitry Fishman who is acknowledged for his help with the instruments.

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