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Interactions of a photochromic spiropyran with liposome model membranes

Fabian Jonsson (Institutionen för kemi- och bioteknik, Fysikalisk kemi) ; Tamas Beke-Somfai (Institutionen för kemi- och bioteknik, Fysikalisk kemi) ; Joakim Andréasson (Institutionen för kemi- och bioteknik, Fysikalisk kemi) ; Bengt Nordén (Institutionen för kemi- och bioteknik, Fysikalisk kemi)
Langmuir (0743-7463). Vol. 29 (2013), 7, p. 2099–2103.
[Artikel, refereegranskad vetenskaplig]

The interactions between anionic or zwitterionic liposomes and a water-soluble, DNA-binding photochromic spiropyran are studied using UV/vis absorption and linear dichroism (LD) spectroscopy. The spectral characteristics as well as the kinetics of the thermal isomerization process in the absence and presence of the two different liposome types provide information about the environment and whether or not the spiropyran resides in the liposome membrane. By measuring LD on liposomes deformed and aligned by shear flow, further insight is obtained about interaction and binding geometry of the spiropyran at the lipid membranes. We show that the membrane interactions differ between the two types of liposomes used as well as the isomeric forms of the spiropyran photoswitch.



Denna post skapades 2013-03-14. Senast ändrad 2016-08-19.
CPL Pubid: 174672

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Fysikalisk kemi (2005-2014)

Ämnesområden

Kemi

Chalmers infrastruktur