RT info:eu-repo/semantics/article
T1 Functional carbon nanosheets prepared from hexayne amphiphile monolayers at room temperature
A1 Schrettl, Stephen
A1 Stefaniu, Cristina
A1 Schwieger, Christian
A1 Pasche, Guillaume
A1 Oveisi, Emad
A1 Fontana, Yannik
A1 Morral, Anna Fontcuberta i
A1 Reguera, Javier
A1 Petraglia, Riccardo
A1 Corminboeuf, Clémence
A1 Brezesinski, Gerald
A1 Frauenrath, Holger
AB Carbon nanostructures that feature two-dimensional extended nanosheets are important components for technological applications such as high-performance composites, lithium-ion storage, photovoltaics and nanoelectronics. Chemical functionalization would render such structures better processable and more suited for tailored applications, but typically this is precluded by the high temperatures needed to prepare the nanosheets. Here, we report direct access to functional carbon nanosheets of uniform thickness at room temperature. We used amphiphiles that contain hexayne segments as metastable carbon precursors and self-assembled these into ordered monolayers at the air/water interface. Subsequent carbonization by ultraviolet irradiation in ambient conditions resulted in the quantitative carbonization of the hexayne sublayer. Carbon nanosheets prepared in this way retained their surface functionalization and featured an sp2-rich amorphous carbon structure comparable to that usually obtained on annealing above 800 8C. Moreover, they exhibited a molecularly defined thickness of 1.9 nm, were mechanically self-supporting over several micrometres and had macroscopic lateral dimensions on the order of centimetres.
SN 1755-4330
YR 2014
FD 2014
LK https://uvadoc.uva.es/handle/10324/68104
UL https://uvadoc.uva.es/handle/10324/68104
LA eng
NO Nat. Chem. 2014, 6, 468-476
DS UVaDOC
RD 11-jul-2024