Fabrication and characterization of single pores for modeling mass transport across porous membranes

被引:29
作者
Sun, L [1 ]
Crooks, RM [1 ]
机构
[1] Texas A&M Univ, Dept Chem, College Stn, TX 77842 USA
关键词
D O I
10.1021/la980871a
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
An Au membrane containing a single pore was fabricated using a template approach. The pore diameter is defined by the diameter of a glass fiber template and the pore length by the amount of Au electroplated over a seed pore. The utility of the single pore for modeling mass transport is demonstrated by configuring the pore as a Coulter counter to monitor the transport of 440 nm diameter polystyrene spheres. An important advantage of this Au membrane model is that the pore surface chemistry can be modified with a self-assembled monolayer. However, the metallic Au surface also requires minimizing the exposed membrane area in order to reduce the interfering charging/faradaic current and to shorten the instrumental response time.
引用
收藏
页码:738 / 741
页数:4
相关论文
共 31 条
[1]  
Bard A. J., 1980, ELECTROCHEMICAL METH
[2]   Imaging molecular transport in porous membranes. Observation and analysis of electroosmotic flow in individual pores using the scanning electrochemical microscope [J].
Bath, BD ;
Lee, RD ;
White, HS ;
Scott, ER .
ANALYTICAL CHEMISTRY, 1998, 70 (06) :1047-1058
[3]   NUCLEAR-PORE COMPLEX ION CHANNELS (REVIEW) [J].
BUSTAMANTE, JO ;
LIEPINS, A ;
HANOVER, JA .
MOLECULAR MEMBRANE BIOLOGY, 1994, 11 (03) :141-150
[4]   High specific interaction of polymers with the pores of hydrophobic zeolites [J].
Buttersack, C ;
Rudolph, H ;
Mahrholz, J ;
Buchholz, K .
LANGMUIR, 1996, 12 (13) :3101-3106
[5]   PERFORATED MONOLAYERS - FABRICATION OF CALIX[6]ARENE-BASED COMPOSITE MEMBRANES THAT FUNCTION AS MOLECULAR-SIEVES [J].
CONNER, MD ;
JANOUT, V ;
KUDELKA, I ;
DEDEK, P ;
ZHU, JY ;
REGEN, SL .
LANGMUIR, 1993, 9 (09) :2389-2397
[6]   TRANSPORT PROCESSES IN COMPOSITE MEDIA [J].
DAVIS, HT ;
VALENCOURT, LR ;
JOHNSON, CE .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1975, 58 (9-10) :446-452
[7]   COUNTING AND SIZING OF SUBMICRON PARTICLES BY RESISTIVE PULSE TECHNIQUE [J].
DEBLOIS, RW ;
BEAN, CP .
REVIEW OF SCIENTIFIC INSTRUMENTS, 1970, 41 (07) :909-&
[8]   Governing equations for transport in porous electrodes [J].
DeVidts, P ;
White, RE .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1997, 144 (04) :1343-1353
[9]  
EISENBERG A, 1982, ACS S SER, V180
[10]   SURFACE-DIFFUSION IN MICROSTRUCTURED, ION-EXCHANGE MATRICES - NAFION/NEUTRON TRACK-ETCHED POLYCARBONATE MEMBRANE COMPOSITES [J].
FANG, Y ;
LEDDY, J .
JOURNAL OF PHYSICAL CHEMISTRY, 1995, 99 (16) :6064-6073