Authors:S. Watanabe, N. S. Ishioka, T. Sekine, H. Kudo, H. Shimomura, H. Muramatsu, and T. Kume
Hydrophilic endohedral 133Xe-fullerenols, [133Xe@C60(OH)xand 133Xe@C70(OH)x], were synthesized from hydrophobic endohedral 133Xe-fullerenes. The yield of endohedral 133Xe-fullerenols extracted in water was about 40% and 23% for C60and C70, respectively. The products stored in 0.9% NaCl solution at 20 °C were stable enough to be used in nuclear medicine.
Authors:N. Ishioka, H. Matsuoka, S. Watanabe, A. Osa, M. Koizumi, T. Kume, S. Matsuhashi, T. Fujimura, A. Tsuji, H. Uchida, and T. Sekine
The positron emitters11C,13N and18F and their labeled compounds have been produced for studies on plants using a newly developed positron emitting tracer imaging
system. Although this system covers, at present, a limited area in a plant, the distribution of the positron emitter fed into
the plant can be visualized dynamically. Further development of positron-emitter-labeled compounds is expected to elucidate
the physiological function of plants in vivo.