{"id":185961,"date":"2019-10-02T06:30:57","date_gmt":"2019-10-01T22:30:57","guid":{"rendered":"\/\/m.iemloyee.com\/?p=185961"},"modified":"2019-10-01T20:08:38","modified_gmt":"2019-10-01T12:08:38","slug":"%e3%80%90%e5%ae%a1%e7%a8%bf%e5%b7%b2%e5%9b%9e%e5%a4%8d%e3%80%91%e5%8e%a6%e5%a4%a7%e9%83%91%e5%8d%97%e5%b3%b0%e6%95%99%e6%8e%88angew-chem-int-ed-%e9%ab%98%e7%a8%b3%e5%ae%9a%e4%bd%86%e9%ab%98","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=185961","title":{"rendered":"\u53a6\u5927\u90d1\u5357\u5cf0\u6559\u6388Angew. Chem. Int. Ed.:\u9ad8\u7a33\u5b9a\u4f46\u9ad8\u8868\u9762\u6d3b\u6027\uff1aN-\u6742\u73af\u5361\u5bbe\u7a33\u5b9a\u7684Au25\u7eb3\u7c73\u56e2\u7c07"},"content":{"rendered":"

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

\u7531\u4e8eAu\u7684\u72ec\u7279\u50ac\u5316\u6d3b\u6027\uff0c\u7279\u522b\u662f\u5728\u6709\u673a\u53cd\u5e94\u4e2d\u7684\u9ad8\u9009\u62e9\u6027\uff0c\u91d1\u50ac\u5316\u5728\u8fc7\u53bb\u4e09\u5341\u5e74\u5f15\u8d77\u4e86\u8d8a\u6765\u8d8a\u591a\u7684\u7814\u7a76\u5174\u8da3\u3002Au\u7eb3\u7c73\u9897\u7c92\uff08NPs\uff09\u7684\u50ac\u5316\u6027\u80fd\u53d6\u51b3\u4e8e\u8bb8\u591a\u53c2\u6570\uff0c\u5305\u62ec\u5c3a\u5bf8\uff0c\u5f62\u72b6\u548c\u8868\u9762\u7ed3\u6784\u3002\u7531\u4e8e\u5176\u771f\u6b63\u7684\u5355\u5206\u6563\u6027\u800c\u5177\u6709\u660e\u786e\u7684\u7ec4\u6210\u548c\u7ed3\u6784\uff0c\u539f\u5b50\u7ea7\u7cbe\u786e\u7684Au\u7eb3\u7c73\u56e2\u7c07\uff08NCs\uff09\u6709\u671b\u4e3a\u7814\u7a76Au NPs\u7684\u590d\u6742\u8868\u9762\u5316\u5b66\u63d0\u4f9b\u7406\u60f3\u7684\u6a21\u578b\u3002\u4e3a\u5b9e\u73b0\u4e0a\u8ff0\u76ee\u6807\uff0c\u7ed3\u6784\u660e\u786e\u7684NC\u5e94\u8be5\u5728\u53cd\u5e94\u4ecb\u8d28\u4e2d\u53ef\u6eb6\u4e14\u8db3\u591f\u7a33\u5b9a\uff0c\u540c\u65f6\u5177\u6709\u53ef\u88ab\u53cd\u5e94\u7269\u63a5\u8fd1\u7684\u5f00\u653e\u8868\u9762\u91d1\u5c5e\u4f4d\u70b9\u3002\u5c3d\u7ba1\u8fd1\u51e0\u5341\u5e74\u6765\u901a\u8fc7\u4f7f\u7528\u5305\u62ec\u81a6\uff0c\u786b\u9187\u548c\u7094\u57fa\u5728\u5185\u7684\u6709\u673a\u914d\u4f53\u6210\u529f\u5730\u83b7\u5f97\u4e86\u5927\u91cf\u7684\u539f\u5b50\u7cbe\u786e\u7684Au NCs\uff0c\u5728\u6db2\u76f8\u53cd\u5e94\u4e2d\u4e0d\u4f7f\u7528\u8d1f\u8f7d\uff0c\u76f4\u63a5\u4f7f\u7528\u539f\u5b50\u7cbe\u786eAu NCs\u4f5c\u4e3a\u771f\u6b63\u7684\u5747\u76f8\u50ac\u5316\u5242\u7684\u4f8b\u5b50\u5374\u975e\u5e38\u6709\u9650\u3002<\/p>\n

\u6700\u8fd1\uff0cN-\u6742\u73af\u5361\u5bbe\uff08NHCs\uff09\u5728\u7a33\u5b9a\u91d1\u8868\u9762\uff0c\u7eb3\u7c73\u9897\u7c92\u6216\u91d1\u5c5e\u56e2\u7c07\u65b9\u9762\u5df2\u7ecf\u663e\u793a\u51fa\u4f18\u5f02\u6027\u80fd\u3002\u524d\u671f\u7684\u7814\u7a76\u8bc1\u660e\uff0cNHCs\u5bb9\u6613\u5728\u91d1\u5c5e\u8868\u9762\u5f62\u6210\u575a\u56fa\u7684\u81ea\u7ec4\u88c5\u5355\u5c42\uff0c\u5e76\u80fd\u589e\u5f3a\u50ac\u5316\u6027\u80fd\u3002\u6709\u4eba\u8fd8\u62a5\u9053\u4e86NHCs\u7a33\u5b9a\u7684\u5177\u6709\u4f18\u5f02\u7684\u6c34\u6eb6\u6027\uff0c\u70ed\u7a33\u5b9a\u6027\u548c\u8010\u786b\u9187\u6027\u7684Au\u7eb3\u7c73\u9897\u7c92\u3002\u7406\u8bba\u5de5\u4f5c\u8868\u660e\uff0cNHCs\u53ef\u80fd\u4f5c\u4e3a\u4fee\u9970Au\u8868\u9762\u548c\u4fdd\u62a4\u91d1\u7eb3\u7c73\u56e2\u7c07\u7684\u65b0\u578b\u914d\u4f53\u3002\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0cCrudden \u8bfe\u9898\u7ec4\u524d\u671f\u62a5\u9053\u4e86\u9996\u4f8bNHC\u4fee\u9970\u7684\u591a\u6838Au\u7eb3\u7c73\u56e2\u7c07\uff0c\u8be5\u7eb3\u7c73\u56e2\u7c07[Au11<\/sub>(PPh3<\/sub>)7<\/sub>(i<\/sup>Pr-bimy)Cl2<\/sub>]+<\/sup> \u7684\u8868\u9762\u53ea\u6709\u4e00\u4e2aNHC\u914d\u4f53\u3002<\/p>\n

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

\u8fd1\u65e5\uff0c\u53a6\u95e8\u5927\u5b66\u90d1\u5357\u5cf0\u6559\u6388\u8bfe\u9898\u7ec4<\/strong>\u62a5\u5bfc\u4e86\u5168NHC\u7a33\u5b9a\u7684Au25<\/sub>\u7eb3\u7c73\u56e2\u7c07[Au25<\/sub>(i<\/sup>Pr2<\/sub>-bimy)10<\/sub>Br7<\/sub>]2+<\/sup>\u7684\u76f4\u63a5\u5408\u6210\uff0c\u7ed3\u6784\uff0c\u5149\u5b66\uff0c\u7a33\u5b9a\u6027\u548c\u50ac\u5316\u6027\u80fd\u63a2\u7a76\u3002\u4e0e\u62a5\u9053\u7684[Au11<\/sub>(PPh3<\/sub>)7<\/sub>(i<\/sup>Pr-bimy)Cl2<\/sub>]+<\/sup>\u7c07\u4e0d\u540c\u7684\u662f\uff0cNHC\u662f\u8fd9\u4e2a\u56e2\u7c07\u552f\u4e00\u7684\u6709\u673a\u914d\u4f53\u3002\u8be5\u56e2\u7c07\u7ec4\u5728\u6eb6\u6db2\u4e2d\u8868\u73b0\u51fa\u9ad8\u7684\u70ed\u7a33\u5b9a\u6027\u548c\u7a7a\u6c14\u7a33\u5b9a\u6027\uff0c\u8fdc\u4f18\u4e8e\u81a6\u548c\u786b\u9187\u4fdd\u62a4\u7684Au25<\/sub>\u7eb3\u7c73\u56e2\u7c07\u3002\u66f4\u4ee4\u4eba\u5370\u8c61\u6df1\u523b\u7684\u662f\uff0c\u901a\u8fc7\u7094\u80fa\u5411\u5432\u54da\u7684\u73af\u5f02\u6784\u5316\u4e3a\u6a21\u578b\uff0c\u8be5\u56e2\u7c07\u8868\u73b0\u51fa\u9ad8\u7684\u50ac\u5316\u6d3b\u6027\u3002DFT\u5206\u6790\u7ed9\u51fa\u4e86\u8be5\u56e2\u7c07\u7684\u7535\u5b50\u7ed3\u6784\u548c\u5149\u5438\u6536\u7279\u6027\u7684\u6e05\u6670\u89c6\u56fe\uff0c\u5e76\u6307\u51fa\u4e86\u53ef\u80fd\u7684\u50ac\u5316\u4f4d\u70b9\u3002\u8be5\u6210\u679c\u4ee5\u9898\u4e3a<\/strong>\u201cHighly Robust but Surface-Active: N-Heterocyclic Carbene-Stabilized Au25<\/sub> Nanocluster\u201d<\/strong>\u53d1\u8868\u5728<\/strong>Angew. Chem. Int. Ed.<\/strong>\u4e0a\u3002<\/strong><\/p>\n

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

Figure 1.<\/strong> [Au25<\/sub>(i<\/sup>Pr2<\/sub>-bimy)10<\/sub>Br7<\/sub>]2+<\/sup><\/strong>\u7684\u6676\u4f53\u7ed3\u6784<\/strong><\/p>\n

\"\"\u00a0<\/strong><\/p>\n

Figure 2.Au25<\/sub><\/strong>\u7684\u8d28\u8c31\u548c\u5149\u5b66\u8868\u5f81<\/strong><\/p>\n

\"\"<\/p>\n

a\uff09\u6eb6\u89e3\u5728CH2<\/sub>Cl2<\/sub>\u4e2d\u7684\u6676\u4f53\u7684ESI-MS\u8c31<\/p>\n

b\uff09\u6eb6\u89e3\u5728CH2<\/sub>Cl2<\/sub>\u4e2d\u7684\u6676\u4f53\u7684UV-Vis\u5149\u8c31<\/p>\n

Figure 3.DFT<\/strong>\u8ba1\u7b97<\/strong><\/p>\n

\"\"<\/p>\n

Figure 4.<\/strong>\u7531\u4e0d\u540c\u6709\u673a\u914d\u4f53\u7a33\u5b9a\u7684<\/strong>Au25<\/sub><\/strong>\u7eb3\u7c73\u56e2\u7c07\u7684\u7a33\u5b9a\u6027\u6bd4\u8f83<\/strong><\/p>\n

\"\"<\/p>\n

a-c\uff09\u572880\u2103\u52a0\u70ed\u7684\u60c5\u51b5\u4e0b\u5bf9NHC, \u81a6\u548c\u786b\u9187\u4fdd\u62a4\u7684Au25<\/sub>\u7684\u7d2b\u5916-\u53ef\u89c1\u5149\u8c31\u8ffd\u8e2a<\/p>\n

d\uff09\u7528\u7bad\u5934\u6807\u8bb0\u7684\u5cf0\u7684\u76f8\u5bf9\u5438\u5149\u5ea6\u5f3a\u5ea6<\/p>\n

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

\u5728\u8fd9\u4e2a\u5de5\u4f5c\u4e2d\uff0c\u4f5c\u8005\u901a\u8fc7\u4e00\u9505\u6cd5\u9996\u6b21\u5408\u6210\u4e86\u5168N-\u6742\u73af\u5361\u5bbe\u914d\u4f53\u4fdd\u62a4\u7684\u65b0\u578bAu25<\/sub>\u7eb3\u7c73\u56e2\u7c07\u3002X\u5c04\u7ebf\u6676\u4f53\u5b66\u5206\u6790\u8868\u660e\u8be5\u56e2\u7c07\u7531\u4e24\u4e2a\u5171\u4eab\u9876\u70b9\u7684\u4e8c\u5341\u9762\u4f53\u7ec4\u6210\u3002DFT\u5206\u6790\u8868\u660e\uff0c\u4e24\u4e2a\u4e8c\u5341\u9762\u4f53\u7684\u7535\u5b50\u5b50\u7cfb\u7edf\u53ef\u4ee5\u7406\u89e3\u4e3a\u5f3a\u7535\u5b50\u76f8\u4e92\u4f5c\u7528\u76848\u7535\u5b50\u7cfb\u7edf\uff0c\u4ece\u800c\u63d0\u4f9b\u5177\u6709\u5927\u7684HOMO-LUMO\u80fd\u9699\u7684\u7a33\u5b9a\u768416\u7535\u5b50\u7cfb\u7edf\u3002\u8be5\u56e2\u7c07\u5728\u6eb6\u6db2\u4e2d\u663e\u793a\u51fa\u9ad8\u7684\u70ed\u7a33\u5b9a\u6027\u548c\u7a7a\u6c14\u7a33\u5b9a\u6027\uff0c\u4f18\u4e8e\u6240\u6709\u5176\u4ed6\u62a5\u9053\u7684Au25\u7eb3\u7c73\u56e2\u7c07\u3002\u6b64\u5916\uff0c\u8be5\u56e2\u7c07\u572850\u2103\u4e0b\u5bf9\u7094\u80fa\u4e0e\u5432\u54da\u7684\u73af\u5f02\u6784\u5316\u4e2d\u8868\u73b0\u51fa\u9ad8\u50ac\u5316\u6d3b\u6027\u548c\u7a33\u5b9a\u6027\u3002\u8fd9\u9879\u5de5\u4f5c\u4e3aN-\u6742\u73af\u5361\u5bbe\u7a33\u5b9a\u7684\u91d1\u5c5e\u7eb3\u7c73\u56e2\u7c07\u5728\u5747\u76f8\u50ac\u5316\u4e2d\u7684\u5e94\u7528\u94fa\u5e73\u4e86\u9053\u8def\u3002\u6700\u540e\uff0c\u7531\u4e8e\u5176\u4f18\u5f02\u7684\u70ed\u7a33\u5b9a\u6027\u548c\u7a7a\u6c14\u7a33\u5b9a\u6027\uff0c\u53ef\u80fd\u5728\u7eb3\u7c73\u6280\u672f\u4e2d\u627e\u5230\u5176\u4ed6\u91d1\u5c5e\u56e2\u7c07\u96be\u4ee5\u5b8c\u6210\u7684\u5176\u4ed6\u5e94\u7528\u3002<\/p>\n

Highly Robust but Surface-Active: N-Heterocyclic Carbene-Stabilized Au25<\/sub> Nanocluster<\/a><\/p>\n

(Angew. Chem. Int. Ed., 2019, DOI: 10.1002\/anie.201908983)<\/p>\n

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