期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 59, 期 28, 页码 11521-11526出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202002685
关键词
bimetallic complexes; magnetic nanoparticles; nanoimprint lithography; nanorods; self-assembly
资金
- Science, Technology and Innovation Committee of Shenzhen Municipality [JCYJ20180507183413211]
- National Natural Science Foundation of China [51873176, 21701112]
- Hong Kong Research Grants Council [PolyU153062/18P]
- Hong Kong Polytechnic University [1-ZE1C]
- Ms. Clarea Au for the Endowed Professorship in Energy [847S]
- Canadian Government
Self-assembly of d(8) metal polypyridine systems is a well-established approach for the creation of 1D organometallic assemblies but there are still challenges for the large-scale construction of nanostructured patterns from these building blocks. We describe herein the use of high-throughput nanoimprint lithography (NIL) to direct the self-assembly of the bimetallic complexes [4 '-ferrocenyl-(2,2 ':6 ',2 ''-terpyridine)M(OAc)](+)(OAc)(-) (M=Pd or Pt; OAc=acetate). Uniform nanorods are fabricated from the molecular self-organization and evidenced by morphological characterization. More importantly, when top-down NIL is coupled with the bottom-up self-assembly of the organometallic building blocks, regular arrays of nanorods can be accessed and the patterns can be controlled by changing the lithographic stamp, where the mold imposes a confinement effect on the nanorod growth. In addition, patterns consisting of the products formed after pyrolysis are studied. The resulting arrays of ferromagnetic FeM alloy nanorods suggest promising potential for the scalable production of ordered magnetic arrays and fabrication of magnetic bit-patterned media.
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