{"id":107388,"date":"2017-10-21T06:30:47","date_gmt":"2017-10-20T22:30:47","guid":{"rendered":"http:\/\/www.cailiaoniu.com\/?p=107388"},"modified":"2017-10-20T18:40:42","modified_gmt":"2017-10-20T10:40:42","slug":"nature%e5%ad%90%e5%88%8a%ef%bc%9a%e9%87%91%e5%b1%9e%e7%ba%b3%e7%b1%b3%e9%a2%97%e7%b2%92%e4%b8%ad%e7%9a%84%e5%8f%af%e6%8e%a7%e5%8d%95%e9%87%91%e5%b1%9e%e5%8e%9f%e5%ad%90%e6%8e%ba%e6%9d%82","status":"publish","type":"post","link":"http:\/\/www.cailiaoniu.com\/?p=107388","title":{"rendered":"Nature\u5b50\u520a\uff1a\u91d1\u5c5e\u7eb3\u7c73\u9897\u7c92\u4e2d\u7684\u53ef\u63a7\u5355\u91d1\u5c5e\u539f\u5b50\u63ba\u6742"},"content":{"rendered":"

\u3010\u5f15\u8a00\u3011<\/strong><\/p>\n

\u7eb3\u7c73\u9897\u7c92\u5728\u50ac\u5316\u3001\u4f20\u611f\u3001\u5149\u5b66\u7b49\u9886\u57df\u5177\u5907\u5de8\u5927\u7684\u6f5c\u5728\u5e94\u7528\u4ef7\u503c\u3002\u5728\u539f\u5b50\u5c3a\u5ea6\u4e0a\u7406\u89e3\u7eb3\u7c73\u9897\u7c92\u7684\u7ed3\u6784\u6709\u5229\u4e8e\u660e\u786e\u7ed3\u6784\u4e0e\u6027\u80fd\u4e4b\u95f4\u5173\u7cfb\uff0c\u53ef\u8c03\u63a7\u7eb3\u7c73\u9897\u7c92\u7684\u6027\u80fd\uff0c\u8fdb\u800c\u62d3\u5bbd\u7eb3\u7c73\u9897\u7c92\u7684\u5e94\u7528\u8303\u56f4\u3002\u5355\u539f\u5b50\u63ba\u6742\u53ef\u7528\u4e8e\u8bbe\u8ba1\u65b0\u578b\u53cc\u529f\u80fd\u5f02\u8d28\u7ed3\u50ac\u5316\u5242\uff0c\u8d4b\u4e88\u50ac\u5316\u5242\u65b0\u7684\u66f4\u4f18\u5f02\u7684\u6027\u80fd\u3002\u7531\u4e8e\u91d1\u5c5e\u94f6\uff08Ag\uff09\u548c\u91d1\u5c5e\u94dc\uff08Cu\uff09\u7684\u6700\u5916\u5c42\u7535\u5b50\u7ed3\u6784\u4e0e\u91d1\u5c5e\u91d1\uff08Au\uff09\u7684\u6700\u5916\u5c42\u7535\u5b50\u7ed3\u6784\u6781\u4e3a\u76f8\u4f3c\uff0c\u5236\u5907\u5355\u91d1\u5c5eAg\u6216Cu\u539f\u5b50\u63ba\u6742\u7684Au\u7eb3\u7c73\u9897\u7c92\u4f9d\u7136\u5b58\u5728\u76f8\u5f53\u7684\u6311\u6218\u3002<\/p>\n

\u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong><\/p>\n

\u8fd1\u65e5\uff0c\u5361\u5185\u57fa\u6885\u9686\u5927\u5b66\u7684\u91d1\u8363\u8d85\u6559\u6388\uff08\u901a\u8baf\u4f5c\u8005\uff09<\/strong>\u7b49\u5728Nat. Commun. <\/strong>\u4e0a\u53d1\u8868\u4e86\u9898\u4e3a\u201cShuttling single metal atom into and out of a metal nanoparticle<\/strong>\u201d\u7684\u7814\u7a76\u8bba\u6587\uff0c\u62a5\u9053\u4e86\u91d1\u5c5e\u7eb3\u7c73\u9897\u7c92\u4e2d\u5355\u539f\u5b50\u63ba\u6742\u65b9\u9762\u7684\u6700\u65b0\u7814\u7a76\u8fdb\u5c55\u3002\u7814\u7a76\u4eba\u5458\u901a\u8fc7\u5728\u91d1\u5c5eAu\u7eb3\u7c73\u9897\u7c92\u7ed3\u6784\u4e2d\u7684\u7279\u5b9a\u4f4d\u7f6e\u8bbe\u8ba1\u7a7a\u4f4d\u6765\u964d\u4f4e\u63ba\u6742\u5242\u586b\u5145\u96be\u5ea6\uff0c\u6700\u7ec8\u5b9e\u73b0\u4e86Au\u7eb3\u7c73\u9897\u7c92\u7684\u53ef\u63a7\u5355\u91d1\u5c5e\u539f\u5b50\u63ba\u6742\u3002\u7814\u7a76\u53d1\u73b0\uff1a\u63ba\u6742\u7684\u539f\u5b50\u6ce8\u5165\u7eb3\u7c73\u7ed3\u6784\u65f6\uff0c\u5e76\u4e0d\u662f\u76f4\u63a5\u5728\u7a7a\u4f4d\u586b\u5145\uff0c\u800c\u662f\u6324\u538bAu\u539f\u5b50\u8fdb\u5165\u4e2d\u7a7a\u4f4d\u70b9\uff0c\u5f62\u6210MAu24<\/sub>\uff08M=Au\/Ag\/Cu\uff09\u7eb3\u7c73\u9897\u7c92\u3002\u975e\u4e2d\u7a7a\u7ed3\u6784\u7684MAu24<\/sub>\u7eb3\u7c73\u9897\u7c92\u53ef\u4ee5\u901a\u8fc7\u4e2d\u7a7a\u586b\u5145\u7684\u65b9\u5f0f\u8fdb\u4e00\u6b65\u8f6c\u5316\u4e3aM2<\/sub>Au23<\/sub>\u7eb3\u7c73\u9897\u7c92\u3002\u5355\u91d1\u5c5e\u539f\u5b50\u63ba\u6742\u5242\u6ce8\u5165\u548c\u8131\u51fa\u7684\u8def\u5f84\u5b58\u5728\u660e\u663e\u7684\u5dee\u5f02\uff1b\u5f53\u5355\u539f\u5b50\u6ce8\u5165\u4e2d\u7a7a\u7ed3\u6784\u7684Au24<\/sub>\u7eb3\u7c73\u9897\u7c92\u65f6\uff0c\u4e3b\u8981\u7531\u4e2d\u90e8\u548c\u9876\u70b9\u7684\u4f4d\u7f6e\u8fdb\u5165\u7eb3\u7c73\u7ed3\u6784\uff1b\u5f53\u91d1\u5c5e\u539f\u5b50\u7531\u7eb3\u7c73\u9897\u7c92\u4e2d\u8131\u51fa\u65f6\uff0c\u5219\u4e3b\u8981\u901a\u8fc7\u4fa7\u8fb9\u7684\u4f4d\u70b9\u5b9e\u73b0\u8131\u51fa\u3002<\/p>\n

\u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n

\u56fe<\/strong>-1. Au24<\/sub><\/strong>\u548c<\/strong>Au25<\/sub><\/strong>\u7eb3\u7c73\u56e2\u7c07\u7684<\/strong>X<\/strong>\u5c04\u7ebf\u7ed3\u6784\u548c<\/strong>UV-Vis<\/strong>\u5149\u8c31<\/strong><\/p>\n

\"\"<\/p>\n

\uff08a\uff09\u4e2d\u5fc3\u539f\u5b50\u7f3a\u5931\u7684\u4e2d\u7a7aAu24<\/sub>\u68d2\u7684X\u5c04\u7ebf\u7ed3\u6784\u3002<\/p>\n

\uff08b\uff09Au25<\/sub>\u68d2\u7684X\u5c04\u7ebf\u7ed3\u6784\u3002\uff08\u9ec4\u8272\u4e3a\u91d1\u539f\u5b50\uff0c\u6a59\u8272\u4e3aP\u539f\u5b50\uff0c\u7ea2\u8272<\/p>\n

\u4e3aS\u539f\u5b50\uff0c\u7eff\u8272\u4e3aCl\u539f\u5b50\uff09<\/p>\n

\uff08c\uff09\u4e2d\u7a7aAu24<\/sub>\u68d2\u7684UV-Vis\u5149\u8c31\u3002<\/p>\n

\uff08d\uff09Au25<\/sub>\u68d2\u7684UV-Vis\u5149\u8c31\u3002<\/p>\n

\u56fe<\/strong>-2. Au<\/strong>\u7eb3\u7c73\u56e2\u7c07\u548c\u63ba\u6742<\/strong>Au<\/strong>\u7eb3\u7c73\u56e2\u7c07\u7684<\/strong>UV\u2013Vis <\/strong>\u548c<\/strong> ESI-MS<\/strong>\u5149\u8c31<\/strong><\/p>\n

\"\"<\/p>\n

\uff08a\uff09\u672a\u63ba\u6742Au25<\/sub>\u68d2\uff08\u9ed1\u7ebf\uff09\uff0c\u5355\u4e2a\u94f6\u539f\u5b50\u63ba\u6742\u7684Ag1<\/sub>Au24<\/sub>\uff08\u7ea2\u7ebf\uff09\u548c\u5355\u4e2a\u94dc\u539f\u5b50\u63ba\u6742\u7684Cu1<\/sub>Au24<\/sub>\uff08\u84dd\u7ebf\uff09\u7684UV-Vis\u5149\u8c31\u3002<\/p>\n

\uff08b\uff09\u672a\u63ba\u6742Au25<\/sub>\u68d2\uff08\u9ed1\u7ebf\uff09\uff0c\u5355\u4e2a\u94f6\u539f\u5b50\u63ba\u6742\u7684Ag1<\/sub>Au24<\/sub>\uff08\u7ea2\u7ebf\uff09\u548c\u5355\u4e2a\u94dc\u539f\u5b50\u63ba\u6742\u7684Cu1<\/sub>Au24<\/sub>\uff08\u84dd\u7ebf\uff09\u7684\u8d1f\u79bb\u5b50\u6a21\u5f0fEIS-MS\u5149\u8c31\u3002<\/p>\n

\u56fe<\/strong>-3. <\/strong>\u5355\u539f\u5b50\u63ba\u6742\u4e2d\u7a7a<\/strong>Au24<\/sub><\/strong>\u7eb3\u7c73\u9897\u7c92<\/strong><\/p>\n

\"\"<\/p>\n

\u5355\u4e2aAg \/ Cu\u539f\u5b50\u8fdb\u5165\u4e2d\u7a7aAu24<\/sub>\u7eb3\u7c73\u9897\u7c92\u7684\u9014\u5f84\u3002\uff08\u9ec4\u8272\u4e3aAu\u539f\u5b50\uff0c\u84dd\u8272\u4e3aAg\u539f\u5b50\uff0c\u54c1\u7ea2\u8272\u4e3aCu\u539f\u5b50\uff09<\/p>\n

\u56fe<\/strong>-4. <\/strong>\u901a\u8fc7<\/strong>DFT<\/strong>\u8ba1\u7b97\u63d0\u51fa\u7684\u4e2d\u7a7a<\/strong>Au24<\/sub><\/strong>\u56e2\u7c07\u7684\u5f62\u6210\u673a\u7406\u3002<\/strong><\/p>\n

\"\"<\/p>\n

\u539f\u5b50\u95f4\u95f4\u8ddd\u00a0a\u2009=\u2009b\u2009=\u2009c\u2009=\u20092.97 \u00c5,\u00a0a\u2032\u2009=\u20093.23 \u00c5,\u00a0b\u2032\u2009=\u20092.90 \u00c5,\u00a0c\u2032\u2009=\u20092.86\u2009\u00c5\u3002<\/p>\n

DFT\u7ed3\u679c\u663e\u793a \u0394E1<\/sub>\u2009=\u200925.9 \u2009kcal\/mol, \u0394E2<\/sub>\u2009=\u20097.1\u2009kcal\/mol,<\/p>\n

\u0394E3<\/sub>\u2009=\u2009\u22125.2 kcal\/mol, \u0394E4<\/sub>\u2009=\u200934.4 kcal\/mol, \u0394E5<\/sub>\u2009=\u2009\u221230.7\u2009kcal\/mol\u3002\u00a0<\/p>\n

\uff08\u7eff\u8272\u4e3aAu1<\/sub>\u539f\u5b50\uff0c\u7070\u8272\u4e3aAu2<\/sub>\u539f\u5b50\uff0c\u9ec4\u8272\u4e3a\u5176\u4ed6Au\u539f\u5b50\uff0c\u7ea2\u8272\u4e3aS\u539f\u5b50\uff0c\u54c1\u7ea2\u8272\u4e3aP\u539f\u5b50\uff09<\/p>\n

\u56fe<\/strong>-5. <\/strong>\u57fa\u4e8e<\/strong>DFT<\/strong>\u8ba1\u7b97\u63d0\u51fa\u7684\u63ba\u6742<\/strong>MAu24<\/sub><\/strong>\u56e2\u7c07\u7684\u5f62\u6210\u673a\u7406\u3002<\/strong><\/p>\n

\"\"<\/p>\n

\uff08a\uff09\u5728Au25<\/sub>\u7ed3\u6784\u4e2d\u6307\u5b9a\u4f4d\u70b9P1-P5\u3002<\/p>\n

\uff08b\uff09M\u4f4d\u4e8e\u8170\u90e8\u65f6\u6839\u636eDFT\u8ba1\u7b97\u51fa\u7684MAu24<\/sub>\u7684\u5f62\u6210\u673a\u7406\u3002\u5728\u8170\u90e8\u4f4d\u7f6e\u7684\u91d1\u539f\u5b50\u88ab\u63a8\u5165\u7a7a\u4f4d\u4ee5\u5f62\u6210Cu Au24<\/sub>\u3002<\/p>\n

\uff08c\uff09M\u4f4d\u4e8e\u9876\u70b9\u65f6\u6839\u636eDFT\u8ba1\u7b97\u51fa\u7684MAu24<\/sub>\u7684\u5f62\u6210\u673a\u7406\u3002<\/p>\n

\uff08\u9ec4\u8272\u4e3aAu\u539f\u5b50\uff0c\u7ea2\u8272\u4e3aS\u539f\u5b50\uff0c\u7eff\u8272\u4e3aCl\u539f\u5b50\uff0c\u9752\u8272\u4e3aCu<\/p>\n

\u539f\u5b50\uff0c\u7070\u8272\u4e3aAg\u539f\u5b50\uff09<\/p>\n

\u56fe<\/strong>-6. <\/strong>\u4e8c\u6b21\u63ba\u6742\u4ea7\u7269\u7684<\/strong>UV-Vis<\/strong>\u548c<\/strong>ESI-TOF-MS<\/strong>\u5149\u8c31<\/strong><\/p>\n

\"\"<\/p>\n

\uff08a\uff09[Cu\u00a0<\/sub>x<\/sub><\/em>\u00a0<\/sub>Au25\u2212x<\/em>\u00a0<\/sub>(PPh3<\/sub>)10<\/sub>(PET)5<\/sub>Cl2<\/sub>]2+<\/sup>\uff08x=1,2 \u84dd\u7ebf\uff09\u548c[Ag2<\/sub>Au23<\/sub>(PPh3<\/sub>)10<\/sub>(PET)5<\/sub>Cl2<\/sub>]2+<\/sup>\uff08\u7ea2\u7ebf\uff09\u7684UV-Vis\u5149\u8c31\u3002<\/p>\n

\uff08b\uff09[Cu\u00a0<\/sub>x<\/sub><\/em>\u00a0<\/sub>Au25\u2212x<\/em>\u00a0<\/sub>(PPh3<\/sub>)10<\/sub>(PET)5<\/sub>Cl2<\/sub>]2+<\/sup>\uff08x=1,2 \u84dd\u7ebf\uff09\u548c[Ag2<\/sub>Au23<\/sub>(PPh3<\/sub>)10<\/sub>(PET)5<\/sub>Cl2<\/sub>]2+<\/sup>\uff08\u7ea2\u7ebf\uff09\u7684\u6b63\u79bb\u5b50\u6a21\u5f0fEIS-MS\u5149\u8c31\u3002<\/p>\n

\u56fe<\/strong>-7. <\/strong>\u5c06\u4e24\u4e2a<\/strong>Ag<\/strong>\u539f\u5b50\u6ce8\u5165\u7eb3\u7c73\u9897\u7c92\u7684\u673a\u7406\u793a\u610f\u56fe<\/strong><\/p>\n

\"\"<\/p>\n

\u6b65\u9aa41\uff1a\u4f7f\u7528PPh3<\/sub>\u5728\u56fa\u4f53Au25<\/sub>\u7eb3\u7c73\u7c07\u4e2d\u5f62\u6210\u4e00\u4e2a\u5b54;<\/p>\n

\u6b65\u9aa42\uff1a\u4f7f\u7528AgCl\u586b\u5145\u8be5\u5b54\u5e76\u4ea7\u751fAg1<\/sub>Au24<\/sub>;<\/p>\n

\u6b65\u9aa43\uff1a\u7ee7\u7eed\u4f7f\u7528PPh3<\/sub>\u5728Ag1<\/sub>Au24<\/sub>\u7eb3\u7c73\u7c07\u4e2d\u5f62\u6210\u4e00\u4e2a\u5b54\uff0c\u5f62\u6210\u4e2d\u7a7a<\/p>\n

Ag1<\/sub>Au23<\/sub>\u7eb3\u7c73\u56e2\u7c07;<\/p>\n

\u6b65\u9aa44\uff1a\u4f7f\u7528AgCl\u586b\u5145\u5b54\u5e76\u4ea7\u751fAg2<\/sub>Au23<\/sub>\u7eb3\u7c73\u56e2\u7c07\u3002<\/p>\n

\uff08\u9ec4\u8272\u4e3aAu\u539f\u5b50\uff0c\u54c1\u7ea2\u8272\u4e3aAg\u539f\u5b50\uff09<\/p>\n

\u3010\u5c0f\u7ed3\u3011<\/strong><\/p>\n

\u672c\u6587\u901a\u8fc7\u8bbe\u8ba1\u4e2d\u7a7a\u7ed3\u6784\u7684Au\u7eb3\u7c73\u9897\u7c92\u7ed3\u6784\uff0c\u6210\u529f\u5b9e\u73b0\u4e86Au\u7eb3\u7c73\u9897\u7c92\u7684\u5355Ag\/Cu\u539f\u5b50\u63ba\u6742\u3002\u7ed3\u5408\u5149\u8c31\u5206\u6790\u548c\u5bc6\u5ea6\u6cdb\u51fd\u7406\u8bba\u8ba1\u7b97\uff0c\u7814\u7a76\u4eba\u5458\u5728\u539f\u5b50\u5c3a\u5ea6\u4e0a\u7cbe\u786e\u4e0a\u7406\u89e3\u4e86\u7eb3\u7c73\u9897\u7c92\u4e2d\u5355\u539f\u5b50\u63ba\u6742\u5242\u7684\u6ce8\u5165\u548c\u8131\u51fa\u8fc7\u7a0b\u3002\u914d\u4f53\u8bf1\u5bfc\u7684\u5355\u539f\u5b50\u63ba\u6742\u4e3a\u8c03\u8282\u5408\u91d1\u7eb3\u7c73\u7c92\u5b50\u4e2d\u6742\u539f\u5b50\u7684\u63ba\u6742\u4f4d\u7f6e\u548c\u63ba\u6742\u6570\u91cf\u63d0\u4f9b\u4e86\u65b0\u7684\u601d\u8def\u53c2\u8003\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1a<\/strong>Shuttling single metal atom into and out of a metal nanoparticle <\/a>(Nat. Commun., 2017, DOI: 10.1038\/s41467-017-00939-0)<\/p>\n

\u672c\u6587\u7531\u6750\u6599\u4eba\u7f16\u8f91\u90e8\u5f20\u6770\u7f16\u8bd1\uff0c\u8d75\u98de\u9f99\u5ba1\u6838\uff0c\u70b9\u6211\u52a0\u5165\u6750\u6599\u4eba\u7f16\u8f91\u90e8<\/a>\u3002<\/u><\/p>\n

\u6750\u6599\u6d4b\u8bd5\uff0c\u6570\u636e\u5206\u6790\uff0c\u4e0a<\/strong>\u6d4b\u8bd5\u8c37<\/strong><\/a>\uff01<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

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