Ordered mesoporous materials from metal nanoparticle-block copolymer self-assembly

被引：529

作者：

Warren, Scott C. ^{[1
,2
]}

Messina, Lauren C. ^{[2
]}

Slaughter, Liane S. ^{[2
]}

Kamperman, Marleen ^{[1
]}

Zhou, Qin ^{[2
]}

Gruner, Sol M. ^{[3
]}

DiSalvo, Francis J. ^{[2
]}

Wiesner, Ulrich ^{[1
]}

机构：

[1] Cornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USA

[2] Cornell Univ, Dept Chem & Chem Biol, Ithaca, NY 14853 USA

[3] Cornell Univ, Dept Phys, Ithaca, NY 14853 USA

来源：

SCIENCE | 2008年 / 320卷 / 5884期

关键词：

D O I：

10.1126/science.1159950

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The synthesis of ordered mesoporous metal composites and ordered mesoporous metals is a challenge because metals have high surface energies that favor low surface areas. We present results from the self- assembly of block copolymers with ligand- stabilized platinum nanoparticles, leading to lamellar CCM- Pt- 4 and inverse hexagonal ( CCM- Pt- 6) hybrid mesostructures with high nanoparticle loadings. Pyrolysis of the CCM- Pt- 6 hybrid produces an ordered mesoporous platinum- carbon nanocomposite with open and large pores (>= 10 nanometers). Removal of the carbon leads to ordered porous platinum mesostructures. The platinum- carbon nanocomposite has very high electrical conductivity ( 400 siemens per centimeter) for an ordered mesoporous material fabricated from block copolymer self- assembly.

引用

页码：1748 / 1752

页数：5

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