Stimulated Emission Depletion Lithography with Mercapto-Functional Polymers

ACS Nano
Bianca BucheggerThomas A Klar

Abstract

Surface reactive nanostructures were fabricated using stimulated emission depletion (STED) lithography. The functionalization of the nanostructures was realized by copolymerization of a bifunctional metal oxo cluster in the presence of a triacrylate monomer. Ligands of the cluster surface cross-link to the monomer during the lithographic process, whereas unreacted mercapto functionalized ligands are transferred to the polymer and remain reactive after polymer formation of the surface of the nanostructure. The depletion efficiency in dependence of the cluster loading was investigated and full depletion of the STED effect was observed with a cluster loading exceeding 4 wt %. A feature size by λ/11 was achieved by using a donut-shaped depletion beam. The reactivity of the mercapto groups on the surface of the nanostructure was tested by incubation with mercapto-reactive fluorophores.

References

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Citations

Jan 12, 2017·Advanced Materials·Eva BlascoChristopher Barner-Kowollik
Jun 15, 2019·Chemistry : a European Journal·Ian TeasdaleUwe Monkowius
Mar 2, 2019·Optics Letters·Gaofeng LiangL Jay Guo
Sep 13, 2019·Optics Express·Jieyu YouM Suhail Zubairy
Oct 31, 2019·Micromachines·Xiaolong HeZhenlong Wang
Jan 23, 2021·ACS Nano·Boris BuchroithnerJaroslaw Jacak
Oct 24, 2018·Analytical Chemistry·Bianca BucheggerThomas A Klar
Dec 28, 2017·ACS Applied Materials & Interfaces·Richard WollhofenJaroslaw Jacak
Aug 14, 2020·The Journal of Physical Chemistry. B·Adela HabibRavishankar Sundararaman
Sep 12, 2018·ACS Applied Materials & Interfaces·Eljesa MurteziThomas A Klar

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Methods Mentioned

BETA
fluorescence microscopy
NMR
AFM

Software Mentioned

LabView
Zen
MATLAB
JPK

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