Dorogi Marta, Balint Zoltan, Mikó Csilla, Vileno Bertrand, Milas Mirko, Hernadi Klara, Forró Laszló, Varó György, Nagy Laszló
Institute of Medical Physics and Biophysics, University of Szeged, Szeged, Hungary.
J Phys Chem B. 2006 Nov 2;110(43):21473-9. doi: 10.1021/jp060828t.
The interaction between single-walled carbon nanotubes and photosynthetic reaction centers purified from purple bacterium Rhodobacter sphaeroides R-26 has been investigated. Atomic force microscopy studies provide evidence that reaction center protein can be attached effectively to the nanotubes. The typical diameter of the nanotube is 1-4 nm and 15 +/- 2 nm without and with the reaction centers, respectively. Light-induced absorption change measurements indicate the stabilization of the P+(Q(A)Q(B))- charge pair, which is formed after single saturating light excitation after the attachment to nanotubes. The separation of light-induced charges is followed by slow reorganization of the protein structure. The stabilization effect of light-initiated charges by the carbon nanotubes opens a possible direction of several applications, the most promising being in energy conversion and storage devices.
对单壁碳纳米管与从球形红细菌R-26中纯化得到的光合反应中心之间的相互作用进行了研究。原子力显微镜研究提供了反应中心蛋白可有效附着于纳米管的证据。纳米管的典型直径分别为1 - 4纳米（无反应中心时）和15±2纳米（有反应中心时）。光诱导吸收变化测量表明，在附着于纳米管后，经单次饱和光激发形成的P+(Q(A)Q(B))-电荷对得到了稳定。光诱导电荷分离之后是蛋白质结构的缓慢重组。碳纳米管对光引发电荷的稳定作用为多种应用开辟了一个可能的方向，最有前景的应用是在能量转换和存储设备中。
