Poly(γ-benzyl-L-glutamate) Peptides Confined to Nanoporous Alumina: Pore Diameter Dependence of Self-Assembly and Segmental Dynamics

被引:46
作者
Duran, Hatice [2 ]
Gitsas, Antonis [1 ]
Floudas, George [1 ,3 ]
Mondeshki, Mihail [2 ]
Steinhart, Martin [4 ]
Knoll, Wolfgang [2 ]
机构
[1] Univ Ioannina, Dept Phys, GR-45110 Ioannina, Greece
[2] Max Planck Inst Polymer Res, D-55128 Mainz, Germany
[3] FORTH, Biomed Res Inst, Ioannina, Greece
[4] Max Planck Inst Microstruct Phys, D-06120 Halle, Germany
关键词
ELECTRIC-DIPOLE MOMENT; MOLECULAR-DYNAMICS; DIELECTRIC-PROPERTIES; POLYPEPTIDE SOLUTIONS; NANOTUBE MEMBRANES; GLASS-TRANSITION; POROUS ALUMINA; RELAXATION; COPOLYMERS; POLYMERS;
D O I
10.1021/ma900119x
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Nanorods consisting of the polypeptide poly(γ-benzyl-L-glutamate) (PBLG) were synthesized in nanoporous anodic aluminum oxide (AAO) hard templates with pore diameters ranging from 25 to 400 nm. The AAO was immersed in a 1 vol % solution of dried and distilled 3-aminopropyltriethoxysilane (APTES) in anhydrous ethanol for 6 h, rinsed with anhydrous ethanol, sonicated, and finally baked at 120°C under argon for 20 min. The polymerization of the infiltrated BLG-NCA into the pores of the AAO proceeded overnight at 110°C under vacuum (1-2 mbar). After the removal of residual material from the top surface of the AAO with sharp blades, the samples were again heated to 100°C under vacuum for 3 days. A distinct change of the dynamic behavior rather than a gradually increasing interphase contribution was observed. The temperature dependence of segmental dynamics became significantly weaker than in case of bulk PBLG, and the effective glass temperature was reduced by as much as 50 K.
引用
收藏
页码:2881 / 2885
页数:5
相关论文
共 56 条
[21]   Electromechanical properties of an ultrathin layer of directionally aligned helical polypeptides [J].
Jaworek, T ;
Neher, D ;
Wegner, G ;
Wieringa, RH ;
Schouten, AJ .
SCIENCE, 1998, 279 (5347) :57-60
[22]  
Jonas U., 2002, J. Supramol. Chem, V2, P255, DOI [10.1016/S1472-7862(03)00080-7, DOI 10.1016/S1472-7862(03)00080-7]
[23]   DNA-functionalized nanotube membranes with single-base mismatch selectivity [J].
Kohli, P ;
Harrell, CC ;
Cao, ZH ;
Gasparac, R ;
Tan, WH ;
Martin, CR .
SCIENCE, 2004, 305 (5686) :984-986
[24]  
Kremer F., 2002, BROADBAND DIELECTRIC
[25]   THIN-FILMS OF (3-AMINOPROPYL)TRIETHOXYSILANE ON ALUMINUM-OXIDE AND GOLD SUBSTRATES [J].
KURTH, DG ;
BEIN, T .
LANGMUIR, 1995, 11 (08) :3061-3067
[26]   Enantioseparation using apoenzymes immobilized in a porous polymeric membrane [J].
Lakshmi, BB ;
Martin, CR .
NATURE, 1997, 388 (6644) :758-760
[27]   Antibody-based bio-nanotube membranes for enantiomeric drug separations [J].
Lee, SB ;
Mitchell, DT ;
Trofin, L ;
Nevanen, TK ;
Söderlund, H ;
Martin, CR .
SCIENCE, 2002, 296 (5576) :2198-2200
[28]   TEMPLATE-SYNTHESIZED POLYACETYLENE FIBRILS SHOW ENHANCED SUPERMOLECULAR ORDER [J].
LIANG, WB ;
MARTIN, CR .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1990, 112 (26) :9666-9668
[29]   Understanding crystal orientation in quasi-one-dimensional polymer systems [J].
Ma, Yu ;
Hu, Wenbing ;
Hobbs, Jamie ;
Reiter, Guenter .
SOFT MATTER, 2008, 4 (03) :540-543
[30]   Self-ordering of cell arrangement of anodic porous alumina formed in sulfuric acid solution [J].
Masuda, H ;
Hasegwa, F ;
Ono, S .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1997, 144 (05) :L127-L130