Fabrication and Microstructuring of Hexagonally Ordered Two‐Dimensional Nanopore Arrays in Anodic Alumina

Fabrication and Microstructuring of Hexagonally Ordered Two‐Dimensional Nanopore Arrays in Anodic Alumina
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DOI:
10.1002/(sici)1521-4095(199904)11:6
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发表时间:
1999-04
期刊:
影响因子:
29.4
通讯作者:
An‐Ping Li;F. Müller;A. Birner;K. Nielsch;U. Gösele
An‐Ping Li;F. Müller;A. Birner;K. Nielsch;U. Gösele
中科院分区:
材料科学1区
文献类型:
--
作者:
An‐Ping Li;F. Müller;A. Birner;K. Nielsch;U. Gösele

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用水洗涤三次,用MgSO 4干燥。除去溶剂后,在中性烷氧基树脂上对残余物进行色谱分析。首先,用戊烷洗脱未反应的化合物4和单加合物8,然后用石油醚/乙酸乙酯洗脱双加合物5。(54%,m.p.:191 C)。1H NMR(CDCl3,ppm)3.64(s,8H,CH2),4.33(dd,2H,CH),6.99(dd,2H,CH),7.14(s,8H,芳香族); 13C NMR(CDCl3,ppm)33.72,54.79,126.37,129.22,134.8,139.74,140.72。化合物2:将化合物5(0.8g,2.64mmol)和四氯苯醌(1.28g,5.28mmol)溶解于甲苯(150 mL)中,并在回流下加热1.5小时。除去溶剂后,残余物通过色谱法(中性烷氧基/甲苯)纯化(75%,m. p.:239 C)。H NMR(CDCl3,ppm)5.33(dd,2 H,CH),7.06(dd,2 H,CH),7.37(AA <$BB <$,4 H,芳香族),7.71(AA <$BB <$,4 H,芳香族),7.73(s,4 H,芳香族); 13 C NMR(CDCl 3,ppm)50.74,121.71,126,127.92,132.25,138.73,142.66。化合物6a:将化合物2(100 mg,0.32mmol)和2,3,4,5-四氯噻吩二氧化物(167 mg,0.64mmol)在CH 2Cl 2(4 mL)中的溶液在70 ℃和6 kbar的压力下加热3天.反应完成后,真空除去溶剂。在硅胶上用己烷/甲苯4/1作为洗脱剂对残留物进行层析。第一级分得到所需产物(75%)。该物质可以通过从二氯乙烷/乙酸乙酯中重结晶来进一步纯化。H NMR(CD2Cl2,ppm)3.54(s,2H,CH),5.13(s,2H,CH),7.45(AA <$BB <$,4 H,芳香族),7.80(s,2 H,芳香族),7.82(AA <$BB <$,4 H,芳香族),7.86(s,2 H,芳香族); 13 C NMR(CD 2Cl 2,ppm)48.08,48.86,122.91,123.93,124.29,126.24,126.35,128.02,128.07,131.38,132.91,133.07,137.47,139.58。化合物6 b:使用对于化合物6a的合成所述的程序,以70%的产率获得化合物6 b。H NMR(CD2Cl2,ppm)3.58(s,2H,CH),5.19(s,2H,CH),7.46(AA <$BB <$,4 H,芳香族),7.82(s,2 H,芳香族),7.84(AA <$BB <$,4 H,芳香族),7.86(s,2 H,芳香族); 13 C NMR(CD 2Cl 2,ppm)49.74,51.89,120.49,122.87,123.96,126.22,126.33,128.02,128.08,128.72,132.90,133.06,137.51,139.73。
washed three times with water, and dried over MgSO4. After removing the solvent, chromatography is carried out on the residue on neutral alox. First, unreacted compound 4 and monoadduct 8 are eluted with pentane, and then bis-adduct 5 with petrolether/ethyl acetate. (54 %, m.p.: 191 C). H NMR (CDCl3, ppm) 3.64 (s, 8 H, CH2), 4.33 (dd, 2 H, CH), 6.99 (dd, 2 H, CH), 7.14 (s, 8 H, aromatic); C NMR (CDCl3, ppm) 33.72, 54.79, 126.37, 129.22, 134.8, 139.74, 140.72. Compound 2: Compound 5 (0.8 g, 2.64 mmol) and chloranil (1.28 g, 5.28 mmol) are dissolved in toluene (150 mL), and heated for 1.5 h under reflux. After removing the solvent, the residue is purified via chromatography (neutral alox/toluene) (75 %, m.p.: 239 C). H NMR (CDCl3, ppm) 5.33 (dd, 2 H, CH), 7.06 (dd, 2 H, CH), 7.37 (AA¢BB¢, 4 H, aromatic), 7.71 (AA¢BB¢, 4 H, aromatic), 7.73(s, 4 H, aromatic); C NMR (CDCl3, ppm) 50.74, 121.71, 126, 127.92, 132.25, 138.73, 142.66. Compound 6a: A solution of compound 2 (100 mg, 0.32 mmol) and 2,3,4,5-tetrachlorothiophenedioxide (167 mg, 0.64 mmol) in CH2Cl2 (4 mL) is heated for 3 days at 70 C under a pressure of 6 kbar. After the reaction is complete, the solvent is removed under vacuum. Chromatography is carried out on the residue on silica gel with hexane/toluene 4/1 as eluent. The first fraction gives the desired product (75 %). The material can be further purified by recrystallization from dichloroethane/ethyl acetate. H NMR (CD2Cl2, ppm) 3.54 (s, 2 H, CH), 5.13 (s, 2 H, CH), 7.45 (AA¢BB¢, 4 H, aromatic), 7.80 (s, 2 H, aromatic), 7.82 (AA¢BB¢, 4 H, aromatic), 7.86 (s, 2 H, aromatic); C NMR (CD2Cl2, ppm) 48.08, 48.86, 122.91, 123.93, 124.29, 126.24, 126.35, 128.02, 128.07, 131.38, 132.91, 133.07, 137.47, 139.58. Compound 6b: Using the procedure described for the synthesis of compound 6a, compound 6b is obtained in a yield of 70 %. H NMR (CD2Cl2, ppm) 3.58 (s, 2 H, CH), 5.19 (s, 2 H, CH), 7.46 (AA¢¢BB¢, 4 H, aromatic), 7.82 (s, 2 H, aromatic), 7.84 (AA¢BB¢, 4 H, aromatic), 7.86 (s, 2 H, aromatic); C NMR (CD2Cl2, ppm) 49.74, 51.89, 120.49, 122.87, 123.96, 126.22, 126.33, 128.02, 128.08, 128.72, 132.90, 133.06, 137.51, 139.73.