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Describes the design of a hybrid metal-organic microporous solid by scientists in Japan which stores acetylene in preference to another molecular compound, carbon dioxide at room temperature and pressure. Suitability of acetylene in the synthesis of chemical products and electric materials in the petrochemical and electronics industries; Characteristics and components of the material; Use of maximum entropy method for the synthesis and development of the microporous material.

Reports the synthesis of a supramolecular ring of porphyrin dimers at the Nara Institute of Science & Technology in Japan. Capacity of the dimers to mimic a circular assembly of light-harvesting bacterio- chlorophyll molecules; Arrangement of the porphyrin units; Similarity of hexameric macroring to natural B850.

Reports on Japanese chemists' discovery of a carbene derivative in the triplet state that is significantly more stable than previously observed triplet carbenes. Possible direction into organic ferromagnetic materials.

Reports on the synthesis of a dendritic macromolecular rod by researchers led by Takuzo Aida from University of Tokyo in Japan. Efficiency of the rod in terms of quantum yield; Enhancement of fluorescence results from the steric or shielding effect of the dendritic wedges.