国际晶体学联合会第十六届学术大会与会员代表大会(XVI Congress and General As-sembly of International Union of Crystallography,简称IUCrXVI)于1993年8月21日至29日在北京国际会议中心举行。出席大会的共有1200多名代表和298名偕...国际晶体学联合会第十六届学术大会与会员代表大会(XVI Congress and General As-sembly of International Union of Crystallography,简称IUCrXVI)于1993年8月21日至29日在北京国际会议中心举行。出席大会的共有1200多名代表和298名偕行人员。展开更多
国际晶体学协会宣布设立厄瓦耳奖,以表彰对晶体学有杰出贡献的学者。奖金名称是经已故厄瓦耳(Paul Peter Ewald)教授生前诚挚的允许而选定的,以感谢和赞美他对晶体学基础和对国际晶体学协会的建立所作的重要贡献,特别是他作为1946至194...国际晶体学协会宣布设立厄瓦耳奖,以表彰对晶体学有杰出贡献的学者。奖金名称是经已故厄瓦耳(Paul Peter Ewald)教授生前诚挚的允许而选定的,以感谢和赞美他对晶体学基础和对国际晶体学协会的建立所作的重要贡献,特别是他作为1946至1948年国际晶体学临时委员会主席、1948至1959年任该协会刊物《晶体学学报》第一任编辑和1960至1963年任该协会主席时所作的大量工作。厄瓦耳奖包括奖章、证书和奖金,在每三年一度的国际晶体学代表大会上授予。1987年在澳大利亚伯斯举行的第14届大会上将进行第一次授奖。展开更多
Functional crystals are the basic materials for the development of modern science and technology and are playing key roles in the modern information era. In this paper, we review functional crystals in China, includin...Functional crystals are the basic materials for the development of modern science and technology and are playing key roles in the modern information era. In this paper, we review functional crystals in China, including research history, significant achievements, and important applications by highlighting the most recent progress in research. Challenges for the development of functional materials are discussed and possible directions for development are proposed by focusing on potential strengths of these materials.展开更多
The recent success in the synthesis and total structure determination of atomically precise gold nanoparticles has provided exciting opportunities for fundamental studies as well as the development of new applications...The recent success in the synthesis and total structure determination of atomically precise gold nanoparticles has provided exciting opportunities for fundamental studies as well as the development of new applications. These unique nanoparticles are of molecular purity and possess well defined formulas （i.e., specific numbers of metal atoms and ligands）, resembling organic compounds. Crystallization of such molecularly pure nanoparticles into macroscopic single crystals allows for the determination of total structures of nanoparticles （i.e., the arrangement of metal core atoms and surface ligands） by X-ray crystallography. In this perspective article, we summarize recent efforts in doping and alloying gold nanoparticles with other metals, including Pd, Pt, Ag and Cu. With atomically precise gold nanoparticles, a specific number of foreign atoms （e.g., Pd, Pt） can be incorporated into the gold core, whereas a range of Ag and Cu substitutions is observed but, interestingly, the total number of metal atoms in the homogold nanoparticle is preserved. The heteroatom substitution of gold nanoparticles allows one to probe the optical, structural, and electronic properties truly at the single-atom level, and thus provides a wealth of information for understanding the intriguing properties of this new class of nanomaterials.展开更多
文摘国际晶体学联合会第十六届学术大会与会员代表大会(XVI Congress and General As-sembly of International Union of Crystallography,简称IUCrXVI)于1993年8月21日至29日在北京国际会议中心举行。出席大会的共有1200多名代表和298名偕行人员。
文摘国际晶体学协会宣布设立厄瓦耳奖,以表彰对晶体学有杰出贡献的学者。奖金名称是经已故厄瓦耳(Paul Peter Ewald)教授生前诚挚的允许而选定的,以感谢和赞美他对晶体学基础和对国际晶体学协会的建立所作的重要贡献,特别是他作为1946至1948年国际晶体学临时委员会主席、1948至1959年任该协会刊物《晶体学学报》第一任编辑和1960至1963年任该协会主席时所作的大量工作。厄瓦耳奖包括奖章、证书和奖金,在每三年一度的国际晶体学代表大会上授予。1987年在澳大利亚伯斯举行的第14届大会上将进行第一次授奖。
文摘Functional crystals are the basic materials for the development of modern science and technology and are playing key roles in the modern information era. In this paper, we review functional crystals in China, including research history, significant achievements, and important applications by highlighting the most recent progress in research. Challenges for the development of functional materials are discussed and possible directions for development are proposed by focusing on potential strengths of these materials.
文摘The recent success in the synthesis and total structure determination of atomically precise gold nanoparticles has provided exciting opportunities for fundamental studies as well as the development of new applications. These unique nanoparticles are of molecular purity and possess well defined formulas （i.e., specific numbers of metal atoms and ligands）, resembling organic compounds. Crystallization of such molecularly pure nanoparticles into macroscopic single crystals allows for the determination of total structures of nanoparticles （i.e., the arrangement of metal core atoms and surface ligands） by X-ray crystallography. In this perspective article, we summarize recent efforts in doping and alloying gold nanoparticles with other metals, including Pd, Pt, Ag and Cu. With atomically precise gold nanoparticles, a specific number of foreign atoms （e.g., Pd, Pt） can be incorporated into the gold core, whereas a range of Ag and Cu substitutions is observed but, interestingly, the total number of metal atoms in the homogold nanoparticle is preserved. The heteroatom substitution of gold nanoparticles allows one to probe the optical, structural, and electronic properties truly at the single-atom level, and thus provides a wealth of information for understanding the intriguing properties of this new class of nanomaterials.
