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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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聚甲基丙烯酸单层保护金纳米粒子的制备及pH响应性聚集
DOI: 10.3724/SP.J.1105.2012.12004, PP. 1243-1247
Keywords: 聚甲基丙烯酸,金纳米粒子,聚集,pH响应性
Abstract:
通过可逆断裂链转移加成聚合,制备了单分散的聚甲基丙烯酸叔丁酯,并一步水解获得了具有硫醇端基的聚甲基丙烯酸(PMAA).在还原氯金酸为金纳米粒子的同时,利用硫醇端基与金纳米粒子(GNPs)的耦合作用,一步获得了聚甲基丙烯酸单层保护的金纳米粒子.通过紫外光谱和透射电镜表征证实,金纳米粒子为单分散的球型颗粒,在水溶液中具有长期稳定性.聚甲基丙烯酸单层保护的金纳米粒子的光学性质和聚集状态,具有明显的pH响应性.在酸性条件下,由于PMAA被质子化发生疏水性转变,聚合物链收缩聚集,促使金纳米粒子之间互相靠近并聚集,其表面等离子共振吸收峰发生红移.从酸性调节为碱性后,(PMAA-@-GNPs)能重新分散,吸收峰发生蓝移.在多次循环后,溶液的光学信号能可逆互变且变化不大.
| [1] | 2 Oren R,Liang Z,Barnard J,Warren S C,Wiesner U,Huck W.J Am Chem Soc,2009,131:1670~1671
|
| [2] | 4 Grimm A,Nowak C,Hoffmann J,Sch？rtl W.Macromolecules,2009,42:6231~6238
|
| [3] | 5 Shan J,Tenhu H.Chem Commun,2007,44:4580~4598
|
| [4] | 6 Liang M T,Lin I C,Whittaker M R,Minchin R F,Monteiro M J,Toth I.ACS Nano,2010,4:403~413
|
| [5] | 12 Shan J,Nuopponen M,Jiang H,Viitala T,Kauppinen,E,Kontturi K,Tenhu H.Macromolecules,2005,38:2918~2926
|
| [6] | 13 Shan J,Chen J,Nuopponen M,Viitala T,Jiang H,Peltonen J,Kauppinen E,Tenhu H.Langmuir,2006,22:794~801
|
| [7] | 14 Otsuka H,Akiyama Y,Nagasaki Y,Kataoka K.J Am Chem Soc,2001,123:8226~8230
|
| [8] | 15 Housni A,Zhao Y,Zhao Y.Langmuir,2010,26:12366~12370
|
| [9] | 17 Gehan H,Mangeney C,Aubard J,L関i G,Hohenau A,Krenn J R,Lacaze E,F閘idj N.J Phys Chem Lett,2011,2:926~931
|
| [10] | 18 Nishiyabu R,Hashimoto N,Cho T,Watanabe K,Yasunaga T,Endo A,Kaneko K,Niidome T,Murata M,Adachi C,Katayama Y,Hashizume M,Kimizuka N.J Am Chem Soc,2009,131:2151~2158
|
| [11] | 19 Gittins D I,Caruso F.J Phys Chem B,2001,105:6846~6852
|
| [12] | 20 Shang L,Qin C J,Wang T,Wang M,Wang L X,Dong S J.J Phys Chem C,2007,111:13414~13417
|
| [13] | 21 Yuan Y Y,Liu X Q,Wang Y C,Wang J.Langmuir,2009,25:10298~10304
|
| [14] | 22 Merican Z,Schiller T L,Hawker C J,Fredericks M,Blakey I.Langmuir,2007,23:10539~10545
|
| [15] | 23 Tam J M,Tam J O,Murthy A,Ingram D R,Ma L L,Travis K,Johnston K P,Sokolov K V.ACS Nano,2010,4:2178~2184
|
| [16] | 24 Lowe A B,Sumerlin B S,Donovan M S,McCormick C L.J Am Chem Soc,2002,124:11562~11563
|
| [17] | 25 Zhao D Y,Chen X,Liu Y,Wu C L,Ma R J,An Y L,Shi L Q.J Colloid Interface Sci,2009,331:104~112
|
| [18] | 1 Zhang K, Cutler J I,Zhang J,Zheng D,Auyeung E,Mirkin C A.J Am Chem Soc,2010,131:15151~15153
|
| [19] | 3 Yavuz M,Jensen G,Penaloza D,Seery T,Pendergraph S,Rusling J,Sotzing G.Langmuir,2009,25:13120~13124
|
| [20] | 7 Gehan H,Fillaud L,Chehimi M M,Aubard J,Hohenau A,Felidj N,Mangeney C.ACS Nano,2010,4: 6491~6500
|
| [21] | 8 Sardar R,Bjorge N S,Shumaker-Parry J S.Macromolecules,2008,41:4347~4352
|
| [22] | 9 Chakraborty S,Bishnoi S W,P鑢ez-Luna V H.J Phys Chem C,2010,114:5947~5955
|
| [23] | 10 Nergiz S Z,Singamaneni S.ACS Appl Mater Interfaces,2011,3:945~951
|
| [24] | 11 Li D X,He Q,Cui Y,Li J B.Chem Mater,2007,19:412~417
|
| [25] | 16 Volden S,Kj？niksen A L,Zhu K Z,Genzer J,Nystr？m B,Glomm W R.ACS Nano,2010,4:1187~1201
|
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