Copper(II) terephthalate absorbs a large amount of gases such as N2, Ar, O2, and Xe. The maximum amounts of absorption of gases were 1.8, 1.9, 2.2, and 0.9 mole per one mole of the copper(II) salt for N2, Ar, O2, and Xe, respectively, indicating that the gases were not adsorbed on the surface but occluded within the solid. The porous structure of copper(II) terephthalate, in which the gas is occluded, is deduced from the temperature dependence of magnetic susceptibilities and the linear structure of terephthalate.

A chemically inert, insulating layered silicate (saponite; SP) and an iron(II)-based metallo-supramolecular complex polymer (polyFe) were combined via electrostatic attraction to improve the electrochromic properties of polyFe. Structural characterization indicated that polyFe was intercalated into the SP nanosheets. Interestingly, the redox potential of polyFe was lowered by combining it with SP, and the current was measurable despite the insulating nature of SP. X-ray photoelectron spectroscopy showed that the decrease in the redox potential observed in the SP-polyFe hybrid was caused by the electrostatic neutralization of the Fe cation in polyFe by the negative charge on SP. Electrochemical analyses indicated that electron transfer occurred through electron hopping across the SP-polyFe hybrid. Control experiments using a metal complex composed of Fe and two 2,2':6',2''-terpyridine ligands (terpyFe) showed that SP contributes to the effective electron hopping. This modulation of the electrochemical properties by the layered silicates could be applied to other electrochemical systems, including hybrids of the redox-active ionic species and ion-exchangeable adsorbents.

In hyperthermia treatment for superficial tumors, covering the affected part is often required to avoid intolerable pain. Polyvinylidene chloride (PVDC) sheets have been used to protect the affected area; however, the influence of PVDC covering on the temperature distribution is still unclear. In this study, the temperature changes caused by PVDC covering in hyperthermia treatment using agar phantoms were evaluated. In warming experiments, 30-cm-and 10-cm-diameter electrodes were applied for deep and superficial warming, respectively. To confirm the effect of covering, either half the top side or both phantom ends were covered with the PVDC sheets or dry gauzes. After warming with various covering conditions, the temperature distribution of the phantoms was observed with thermography. The temperature changes over time were also evaluated with a thermocouple thermometer set in the border region of the covering. In deep warming, the increase of heat was slightly inhibited by PVDC covering, which intensified in the uncovered area. This contrast was amplified in superficial warming. Compared with PVDC, covering with dry gauzes showed a significant decrease and increase of heat in the covered and uncovered areas, respectively. In the observation of the temperature changes over time, during deep warming, the PVDC covering lowered no more than-0.4℃ and the gauze covering lowered no more than-1.4℃, compared to that without any covers, in 10 min. In superficial warming, the heat increase in the gauze covering reached ＋7.0℃ in only 5 min. This report showed that partial covering under electrodes could decrease the heat in the covered area and increase in the uncovered area. Although the temperature changes were minimal in PVDC covering, certain conditions could amplify the remodeling of the temperature distribution. Considering such changes is required to safely perform hyperthermia treatment. hyperthermia, polyvinylidene chloride, temperature distribution ハイパーサーミアは，浅在部の腫瘍に対して加温効果が高く，直接的抗腫瘍効果も期待できる 1) ．し かし，凹凸のある浅在性腫瘍では電極の密着が困難であることが多く，目的部位やその周辺に熱感や疼 The thermal distribution in PVDC-covering A. Manabe et al.