{"id":601,"date":"2022-09-11T13:17:43","date_gmt":"2022-09-11T05:17:43","guid":{"rendered":"http:\/\/demo3.aiwalls.com\/cn-news\/index.php\/2022\/09\/11\/%e7%b2%be%e7%a1%ae%e5%88%86%e5%ad%90%e7%ad%9b%e5%88%86%e7%9a%84%e8%b6%85%e8%96%84%e8%86%9c%e4%b8%ad%e7%9a%84%e5%af%b9%e9%bd%90%e5%a4%a7%e7%8e%af%e5%ad%94\/"},"modified":"2022-09-11T13:17:43","modified_gmt":"2022-09-11T05:17:43","slug":"%e7%b2%be%e7%a1%ae%e5%88%86%e5%ad%90%e7%ad%9b%e5%88%86%e7%9a%84%e8%b6%85%e8%96%84%e8%86%9c%e4%b8%ad%e7%9a%84%e5%af%b9%e9%bd%90%e5%a4%a7%e7%8e%af%e5%ad%94","status":"publish","type":"post","link":"https:\/\/demo3.aiwalls.com\/cn-news\/?p=601","title":{"rendered":"\u7cbe\u786e\u5206\u5b50\u7b5b\u5206\u7684\u8d85\u8584\u819c\u4e2d\u7684\u5bf9\u9f50\u5927\u73af\u5b54"},"content":{"rendered":"

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\u6587\u7ae0\u51fa\u5904\uff1a<\/strong>Zhiwei Jiang, Ruijiao Dong, Austin M. Evans, Niklas Biere, Mahmood A. Ebrahim, Siyao Li, Dario Anselmetti, William R. Dichtel, Andrew G. Livingston. Aligned macrocycle pores in ultrathin films for accurate molecular sieving. Nature<\/strong> 2022<\/strong>, 609, 58-64.<\/p>\n

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\u56fe1<\/p>\n

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\u8868\u9762\u548c\u622a\u9762\u626b\u63cf\u7535\u5b50\u663e\u5fae\u955c(SEM)\u56fe\u50cf\u663e\u793a\uff0c\u75310.1 wt.%\u6c28\u57fa\u529f\u80fd\u5316\u03b2-\u73af\u7cca\u7cbe(\u03b2-CDA)\u548c0.1 wt.%\u7684TPC\u5236\u5907\u7684\u7eb3\u7c73\u819c(\u03b2-CDA-TPC-0.1)\u5728\u6c34-\u6709\u673a\u754c\u9762\u4e0a\u53cd\u5e941\u5206\u949f\uff0c\u7136\u540e\u8f6c\u79fb\u5230\u6c27\u5316\u94dd\u8f7d\u4f53\u4e0a(\u56fe2c)\u3002\u901a\u8fc7\u63a7\u5236\u6d53\u5ea6\uff0c\u53ef\u4ee5\u53ef\u9760\u5730\u63a7\u5236\u7eb3\u7c73\u819c\u7684\u539a\u5ea6\u3002\u539f\u5b50\u529b\u663e\u5fae\u955c(AFM)\u663e\u793a\u7eb3\u7c73\u819c(\u03b2-CDA-TPC-0.01)\u7684\u539a\u5ea6\u7ea6\u4e3a3.5 nm (\u56fe2d\u548c2e)\uff0c\u76f8\u5f53\u4e8e\u4e09\u4e2a\u5bf9\u9f50\u7684\u73af\u7cca\u7cbe\u5355\u5143\u3002\u8fd9\u6bd4\u968f\u673a\u586b\u5145\u7684\u73af\u7cca\u7cbe\u5236\u6210\u7684\u805a\u916f\u5c42\u8981\u858430\u500d\u3002<\/p>\n

\u63a0\u5165\u5c04\u5e7f\u89d2x\u5c04\u7ebf\u6563\u5c04(GI-WAXS)\u8bc1\u5b9e\u805a\u5408\u540e\u5f62\u6210\u4e86\u5177\u6709\u9ad8\u5ea6\u62e9\u4f18\u53d6\u5411\u7684\u6676\u4f53\u7eb3\u7c73\u819c(\u03b2-CDA-TPC-0.01)\u3002\u4f5c\u8005\u6ce8\u610f\u5230\u4f4e\u6298\u5c04\u7387\u884d\u5c04\u7279\u5f81\u7684\u5b9e\u9645\u7a7a\u95f4\u4f4d\u7f6e\u4e0e\u5927\u73af\u7684\u9884\u671f\u5c3a\u5bf8\u5f88\u597d\u5730\u5339\u914d(\u56fe2f)\u3002\u6b64\u5916\uff0c\u63d0\u53d6\u7684\u4e00\u7ef4X\u5c04\u7ebf\u6563\u5c04\u5256\u9762\u5728Q|| = 1.20\u548cQ\u22a5 = 1.74\u30011.88 \u00c5-1\u5904\u51fa\u73b0\u5cf0\u503c(\u56fe2g)\uff0c\u8fd9\u4e0e\u5927\u73af\u5b54\u5f62\u6210\u7684\u901a\u9053\u5782\u76f4\u4e8e\u652f\u6491\u57fa\u5e95\u7684\u65b9\u5411\u4e00\u81f4\u3002\u63d2\u503c\u7ebf\u6027X\u5c04\u7ebf\u6563\u5c04\u6a21\u5f0f\u7684\u4f4d\u7f6e\u548c\u76f8\u5bf9\u5f3a\u5ea6\u4e0e\u90bb\u8fd1\u5c42\u95f4\u4e3b\u8981\u4e3a\u65e5\u98df\u53e0\u52a0\u7684\u5927\u65cb\u56de\u4e00\u81f4\u3002\u8fd9\u4e9bGI-WAXS\u6a21\u5f0f\u7684\u5f3a\u5ea6\u5206\u5e03\u4e0d\u662f\u96c6\u4e2d\u5728\u4e00\u4e2a\u70b9\u4e0a\uff0c\u800c\u662f\u4f5c\u4e3a\u4e00\u4e2a\u4f18\u5148\u5206\u5e03\u7684\u5f3a\u5ea6\u5f27\u3002\u8fd9\u8868\u660e\uff0c\u867d\u7136\u5927\u73af\u4e3b\u8981\u6392\u5217\u5728\u819c\u5185\uff0c\u4f46\u8fd9\u79cd\u6392\u5217\u4e5f\u6709\u4e00\u4e9b\u5206\u5e03\u3002\u8fd9\u662f\u9884\u671f\u7684\uff0c\u56e0\u4e3a\u8f6f\u6750\u6599\u7684\u56fa\u6709\u67d4\u97e7\u6027\u5305\u542b\u952e\uff0c\u53ef\u4ee5\u5f62\u6210\u5404\u79cd\u6784\u8c61\u3002<\/p>\n

\u4f18\u5148\u6392\u5217\u4f7f\u5927\u73af\u5b54\u5782\u76f4\u4e8e\u7eb3\u7c73\u819c\u8868\u9762\uff0c\u5e76\u4f7f\u5176\u5b54\u9699\u51e0\u4f55\u5f62\u72b6\u53ef\u89c6\u5316\u3002\u8d85\u9ad8\u771f\u7a7a(UHV) AFM\u663e\u793a\u7eb3\u7c73\u819c\u8868\u9762\u6709\u4e9a\u7eb3\u7c73\u7ea7\u7684\u5b54\uff0c\u5305\u62ec\u6392\u5217\u7684\u6c28\u57fa\u529f\u80fd\u5316\u73af\u7cca\u7cbe\u3001\u03b1-CDA\u3001\u03b2-CDA\u548c\u03b3-CDA (\u56fe2h)\u3002\u4f8b\u5982\uff0c\u56fe2h\u4e2d\u6cbf\u5256\u9762\u7ebf\u79fb\u52a8\u7684\u6a2a\u5411\u8ddd\u79bb\u53cd\u6620\u4e86\u4ecb\u8d28\u8154\u03b2-CDA\u7ea60.6 nm\u7684\u5b54\u5bbd(\u56fe2i)\uff0c\u8fd9\u4e0e\u7406\u8bba\u4e0a\u73af\u76f4\u5f840.61 nm\u76f8\u543b\u5408\u3002\u8be5\u7eb3\u7c73\u819c\u8868\u9762\u6807\u8bb0\u4e86200\u591a\u4e2a\u5b54\u9699\uff0c\u8003\u8651\u5230\u5e73\u5747\u5b54\u5f840.6 nm\uff0c\u5728\u626b\u63cf\u7684100 nm2\u533a\u57df\u4e0a\u5927\u7ea6\u76f8\u5f53\u4e8e60%\u7684\u5b54\u9699\u7387\u3002\u6536\u96c6\u6bcf\u4e2a\u5927\u73af\u7684\u591a\u4e2a\u7eb3\u7c73\u819c\u7684AFM\u8c31\u56fe\uff0c\u7edf\u8ba1\u5206\u6790\u5b54\u5f84\u5206\u5e03\uff0c\u968f\u7740\u73af\u7cca\u7cbe\u7a7a\u8154\u5c3a\u5bf8\u7684\u589e\u52a0\uff0c\u5b54\u5f84\u5206\u5e03\u5448\u4e0a\u5347\u987a\u5e8f\u53d8\u5316(\u56fe2j)\u3002\u4e9a\u7eb3\u7c73\u5b54\u9699\u7684\u53ef\u89c6\u5316\u5728\u9a8c\u8bc1\u591a\u5b54\u7ed3\u6784\u7684\u5b58\u5728\u5e76\u7531\u6b64\u89e3\u91ca\u805a\u5408\u7269\u819c\u4e2d\u7684\u4f20\u8f93\u673a\u5236\u65b9\u9762\u63d0\u51fa\u4e86\u4e00\u4e2a\u6311\u6218\u3002\u4e00\u4e2a\u5173\u952e\u7684\u969c\u788d\u662f\u5728\u8bb8\u591a\u663e\u5fae\u6280\u672f\u6240\u9700\u7684\u771f\u7a7a\u6761\u4ef6\u4e0b\uff0c\u975e\u6676\u805a\u5408\u7269\u8584\u819c\u4e2d\u4e0d\u660e\u786e\u7684\u5b54\u9699\u7684\u53d8\u5f62\u548c\u574d\u584c\u3002\u5728\u8fd9\u91cc\uff0c\u5927\u73af\u7684\u521a\u6027\u7ed3\u6784\u548c\u6709\u5e8f\u7684\u53d6\u5411\u786e\u4fdd\u4e86\u5373\u4f7f\u5728\u7279\u9ad8\u538b\u4e0b\u4e5f\u80fd\u4fdd\u6301\u5176\u660e\u786e\u7684\u5b54\u6d1e\uff0c\u4f7f\u5b54\u6d1e\u80fd\u591f\u88ab\u89c2\u6d4b\u5230\u3002<\/p>\n

\u8fd9\u4e9b\u7ed3\u679c\u8868\u660e\uff0c\u5927\u73af\u4ee5\u6709\u5e8f\u7684\u53d6\u5411\u533a\u57df\u9009\u62e9\u6027\u805a\u5408\u4e3a3-4\u4e2a\u5927\u73af\u539a\u7684\u8584\u819c\u3002\u4f5c\u8005\u63d0\u51fa\uff0c\u8fd9\u79cd\u5927\u73af\u8154\u6392\u5217\u63d0\u4f9b\u4e86\u76f4\u63a5\u901a\u9053\u8de8\u8d8a\u7eb3\u7c73\u819c\u4f4e\u5f2f\u66f2\u6eb6\u8d28\u6269\u6563\u3002\u5c3a\u5bf8\u5c0f\u4e8e\u4f46\u4ecd\u7136\u63a5\u8fd1\u7a7a\u8154\u5c3a\u5bf8\u7684\u6eb6\u8d28\u53ef\u4ee5\u901a\u8fc7\u8fd9\u4e9b\u76f4\u63a5\u901a\u9053\u6e17\u900f\uff0c\u800c\u8fd9\u4e9b\u5206\u5b50\u4f1a\u7531\u4e8e\u53d7\u963b\u8fd0\u8f93\u800c\u88ab\u4fdd\u7559\u5728\u7531\u65e0\u5e8f\u5927\u73af\u7ec4\u6210\u7684\u7eb3\u7c73\u819c\u4e2d\u3002\u4e3a\u4e86\u63a2\u7d22\u8fd9\u4e00\u5047\u8bbe\uff0c\u4f5c\u8005\u901a\u8fc7\u6539\u53d8\u4ea4\u8054\u5242\u7684\u5316\u5b66\u6027\u8d28\u3001\u7ffb\u8f6c\u7eb3\u7c73\u819c\u8868\u9762\u548c\u63a7\u5236\u7eb3\u7c73\u819c\u539a\u5ea6\u6765\u64cd\u7eb5\u5927\u73af\u53d6\u5411\u3002<\/p>\n

<\/p>\n

\u56fe2<\/p>\n

\u91c7\u7528\u66ff\u4ee3\u4ea4\u8054\u5242\u4e09\u7532\u9170\u6c2f(TMC)\u5236\u5907\u4e86\u65e0\u5e8f\u7eb3\u7c73\u819c\u03b2-CDA-TMC-0.1\uff0c\u8be5\u7eb3\u7c73\u819c\u65e0Bragg\u884d\u5c04\u5cf0\uff0c\u800c\u6709\u5e8f\u7eb3\u7c73\u819c\u03b2-CDA-TPC-0.1\u7684\u6563\u5c04\u5bc6\u5ea6\u8f83\u96c6\u4e2d\u3002\u5c06\u4e24\u79cd\u7eb3\u7c73\u819c\u8f6c\u79fb\u5230\u805a\u4e19\u70ef\u8148(PAN)\u8f7d\u4f53\u4e0a\uff0c\u5f62\u6210\u7528\u4e8eOSN\u7684\u590d\u5408\u819c\u3002\u6709\u5e8f\u7eb3\u7c73\u819c\u7684\u7532\u9187\u6e17\u900f\u6027\u662f\u65e0\u5e8f\u7eb3\u7c73\u819c\u7684\u4e24\u500d\uff0c\u800c\u5e9a\u70f7\u7684\u8d8b\u52bf\u5219\u76f8\u53cd(\u56fe3a)\u3002\u7531\u4e8e\u4e24\u79cd\u7eb3\u7c73\u819c\u5177\u6709\u76f8\u4f3c\u7684\u539a\u5ea6\u548c\u4ea4\u8054\u7a0b\u5ea6\uff0c\u4f5c\u8005\u9884\u8ba1\uff0c\u78c1\u5bfc\u7387\u7684\u5dee\u5f02\u53ef\u4ee5\u5f52\u56e0\u4e8e\u5927\u73af\u7684\u53d6\u5411\u3002\u968f\u673a\u53d6\u5411\u7684\u5927\u73af\u4f18\u5148\u5c06\u5176\u758f\u6c34\u58c1\u66b4\u9732\u5728\u7eb3\u7c73\u819c\u8868\u9762\uff0c\u800c\u4e0d\u662f\u4eb2\u6c34\u8fb9\u7f18\uff0c\u5bfc\u81f4\u6781\u6027\u6eb6\u5242\u7532\u9187\u7684\u8fd0\u8f93\u8f83\u6162\u3002\u5c06\u67d3\u6599\u6eb6\u4e8e\u7532\u9187\u4e2d\uff0c\u8003\u5bdf\u4e86\u8fd9\u4e9b\u819c\u7684\u5206\u5b50\u7b5b\u5206\u6027\u80fd\u3002\u65e0\u5e8f\u7684\u7eb3\u7c73\u819c\u57280.48 nm\u5904\u663e\u793a\u51fa\u622a\u6b62\u622a\u7559(\u2265 90%) (\u56fe3b)\uff0c\u8fd9\u504f\u79bb\u4e86\u03b2-CDA\u7684\u5b54\u5f84(0.61 nm)\u3002\u5c0f\u578b\u67d3\u6599\u7684\u5f02\u5e38\u9ad8\u6392\u65a5\u662f\u7531\u4e8e\u65e0\u5e8f\u7684\u7eb3\u7c73\u819c\u589e\u52a0\u7684\u53d7\u963b\u6269\u6563\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0c\u6709\u5e8f\u7eb3\u7c73\u819c\u663e\u793a\u51fa\u4e0e\u03b2-CDA\u7a7a\u8154\u5c3a\u5bf8\u4e00\u81f4\u7684\u7cbe\u786e\u7b5b\u5206\u3002\u5f53\u7532\u9187\u4e2d\u542b\u6709\u4e24\u79cd\u67d3\u6599\u7684\u4e09\u5143\u539f\u6599\u901a\u8fc7\u6709\u5e8f\u7eb3\u7c73\u819c\u8fc7\u6ee4\u65f6\uff0c\u89c2\u6d4b\u5230\u7c7b\u4f3c\u7684\u6392\u65a5\u53cd\u5e94\u548c\u9009\u62e9\u6027\u3002<\/p>\n

\u4e3a\u4e86\u8fdb\u4e00\u6b65\u8bc1\u660e\u53d6\u5411\u7684\u5f71\u54cd\uff0c\u5c06\u72ec\u7acb\u7684\u7eb3\u7c73\u819c\u7ffb\u8f6c\u8fc7\u6765\uff0c\u4f7f\u5176\u80cc\u9762\u66b4\u9732\u5728\u8fdb\u6599\u4e0a\u3002\u80cc\u8868\u9762\u548c\u524d\u8868\u9762\u7684\u7eb3\u7c73\u819c\u90fd\u8868\u73b0\u51fa\u6781\u6027\u6eb6\u5242\u7684\u5feb\u901f\u4f20\u8f93(\u56fe3c)\u3002\u8fd9\u4e0e\u6eb6\u5242\u7684\u5316\u5b66\u4eb2\u548c\u6027\u4e00\u81f4\uff0c\u7eb3\u7c73\u819c\u5728\u6781\u6027\u6eb6\u5242\u4e2d\u6bd4\u5728\u975e\u6781\u6027\u6eb6\u5242\u4e2d\u63d0\u4f9b\u4e86\u66f4\u9ad8\u4e00\u4e2a\u6570\u91cf\u7ea7\u7684\u84b8\u6c7d\u5438\u9644(\u56fe3d)\u3002\u4e0e\u524d\u8868\u9762\u7eb3\u7c73\u819c\u76f8\u6bd4\uff0c\u53cd\u5411\u8868\u9762\u7eb3\u7c73\u819c\u5728\u4e0d\u5f71\u54cd\u6eb6\u8d28\u6392\u65a5\u7684\u60c5\u51b5\u4e0b\uff0c\u6781\u6027\u6eb6\u5242\u7684\u78c1\u5bfc\u7387\u7ffb\u4e86\u4e00\u500d\uff0c\u800c\u975e\u6781\u6027\u6eb6\u5242\u7684\u78c1\u5bfc\u7387\u5219\u76f8\u53cd(\u56fe3c)\u3002\u8fd9\u5f52\u56e0\u4e8e\u8fd9\u4e9b\u7eb3\u7c73\u819c\u7684\u5316\u5b66\u5f02\u8d28\u6027\u3002\u53cd\u8868\u9762\u7eb3\u7c73\u819c\u5bcc\u542b\u4eb2\u6c34\u548c\u5e26\u8d1f\u7535\u7684\u7f9f\u57fa\uff0c\u4ece\u800c\u589e\u5f3a\u6781\u6027\u6eb6\u5242\u7684\u8fd0\u8f93\u3002\u76f8\u53cd\uff0c\u5728\u5316\u5b66\u5747\u5300\u7684\u805a\u9170\u80fa\u7eb3\u7c73\u819c\u4e2d\u89c2\u6d4b\u5230\u8868\u9762\u72ec\u7acb\u7684\u6e17\u900f\u6027\u3002<\/p>\n

\u4f5c\u8005\u65ad\u8a00\uff0c\u8d85\u8584\u7eb3\u7c73\u819c\u7684\u539a\u5ea6\u662f\u5173\u952e\u7684\u5305\u88c5\u5927\u73af\u6709\u5e8f\u53d6\u5411\u3002GI-WAXS\u8868\u660e\uff0c\u968f\u7740\u52a0\u5165\u03b3-CDA\u7684\u7eb3\u7c73\u819c\u539a\u5ea6\u4ece20.0\u51cf\u5c11\u52306.2 nm\uff0c\u7ed3\u6676\u5ea6\u589e\u52a0(\u56fe3e)\uff0c\u8868\u660e\u5927\u73af\u7684\u6392\u5217\u589e\u5f3a\u3002\u8d85\u8584\u7eb3\u7c73\u819c\u7684\u539a\u5ea6\u9650\u5236\u4e86\u5927\u73af\u7684\u53d6\u5411\uff0c\u4f7f\u5176\u4f18\u5148\u5806\u79ef\u5728\u66f4\u6709\u5e8f\u7684\u9635\u5217\u4e2d\uff0c\u6563\u5c04\u5f3a\u5ea6\u66f4\u96c6\u4e2d\uff0c\u800c\u8f83\u539a\u7684\u7eb3\u7c73\u819c\u5219\u5141\u8bb8\u5927\u73af\u6709\u66f4\u591a\u7684\u81ea\u7531\u968f\u610f\u5806\u79ef\uff0c\u6ca1\u6709X\u5c04\u7ebf\u884d\u5c04\u7279\u5f81\u3002\u56e0\u6b64\uff0c\u5927\u73af\u8154\u6392\u5217\u5728\u8d85\u8584\u7eb3\u7c73\u819c\u4e2d\uff0c\u4ee5\u521b\u5efa\u4e9a\u7eb3\u7c73\u901a\u9053\uff0c\u63d0\u4f9b\u66f4\u5feb\u7684\u6eb6\u5242\u8fd0\u8f93\u548c\u4e0e\u8154\u5c3a\u5bf8\u76f8\u5bf9\u5e94\u7684\u7cbe\u786e\u5206\u5b50\u7b5b\u5206\uff0c\u56e0\u6b64\u6bd4\u8f83\u539a\u7684\u7eb3\u7c73\u819c\u5177\u6709\u66f4\u9ad8\u7684\u6eb6\u8d28\u9009\u62e9\u6027(\u56fe3f)\u3002<\/p>\n

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<\/p>\n

\u56fe3<\/p>\n

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<\/p>\n

\u56fe4<\/p>\n

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