Thermoluminescence studies on photosynthetic energy conversion. II. Activation energies for three energy storage states associated with Photoreaction II of higher plants |
| |
Authors: | Susan Lurie Walter Bertsch |
| |
Institution: | Department of Biological Sciences, Hunter College of the City University of New York, 695 Park Avenue, New York, N.Y. 10021, U.S.A. |
| |
Abstract: | Thermoluminescent glow curves of isolated chloroplasts were analyzed to determine activation energy, frequency factor and lifetime of the three glow peaks associated with Photoreaction II. Peak 1 had an activation energy of 0.8 eV, a frequency factor of 1.5 · 1014/s and a lifetime of 0.02 s. This glow peak appeared to be rather different from peaks 2 and 3, which were quite similar to each other. Peaks 2 and 3 gave activation energies respectively of 0.48 eV and 0.57 eV, frequency factors of 7 · 107/s and 1 · 109/s, and lifetimes of about 1.5 s. A second, less reliable method of analysis gave activation energies of 0.72 eV for peak 1 and 0.44 eV for peak 2. Our values are compared with those obtained by other workers, and the possible metastable states reflected by the three glow peaks are discussed. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|