Supramolecular Route to Well-Ordered Metal NanofoamsVukovic, I., Punzhin, S., Vukovic, Z., Onck, P., De Hosson, J. T. M., ten Brinke, G. & Loos, K., Aug-2011, In : Acs Nano. 5, 8, p. 6339-6348 10 p.
Research output: Contribution to journal › Article › Academic › peer-review
Metal nanofoams with a porosity above 50% v/v have recently attracted great. Interest In materials science due to their interesting properties.. We.. demonstrate a new straightforward route to prepare such nanofoams using diblock copolymer-based PS-block-P4VP-(PDP) supramolecules that self-assemble Into a bicontinuous gyroid morphology, consisting of PS network channels in a P4VP(PDP) matrix. After dissolving the PDP, the P4VP. collapses onto the PS struts and a free-standing bicontinuous. gyroid template of 50-100 mu m thickness and interconnected, uniformly sized pores Is formed. The hydrophilic P4VP corona facilitates the penetration of water-based plating reagents into the porous template and enables a successful metal deposition. After plating, the polymer is simply degraded by heating, resulting In a well-ordered inverse gyroid nickel-foam. Essential to this approach Is the removal of only one part of the matrix (i.e., PDP). Therefore, the template accounts for 50% v/v or more. The porosity characteristics (amount, size of pores) can be tuned by selecting the appropriate copolymer and by adjusting the amount of PDP.
|Number of pages||10|
|Publication status||Published - Aug-2011|
- metal nanofoams, nanopores, diblock copolymers, supramolecules, metal plating, BLOCK-COPOLYMERS, THIN-FILMS, DIBLOCK COPOLYMERS, STRONG SEGREGATION, SURFACE-STRESS, POLYSTYRENE, MORPHOLOGY, TEMPLATES, PHASE, NANOCHANNELS