Abstract
Noble metal nanoparticles (NPs) and particularly gold (Au) have become emerging materials in recent decades due to their exceptional optical properties, such as localized surface plasmons. Although multiple and relatively simple protocols have been developed for AuNP synthesis, the functionalization of solid surfaces composed of soft matter with AuNPs often requires complex and multistep processes. Here we developed a facile approach for functionalizing soft adhesive flexible films with plasmonic AuNPs. The synthetic route is based on preparing Au nanoislands (AuNI) (ca. 2-300 nm) on a glass substrate followed by hydrophobization of the functionalized surface, which in turn, allows efficient transfer of AuNIs to flexible adhesive films via soft-printing tape lithography. Here we show that the AuNI structure remained intact after the hydrophobization and soft-printing procedures. The AuNI-functionalized flexible films were characterized by various techniques, revealing unique characteristics such as tunable localized plasmon resonance and Raman enhancement factors beneficial for chemical and biological sensing applications.
| Original language | English |
|---|---|
| Pages (from-to) | 699-710 |
| Number of pages | 12 |
| Journal | ACS Materials Au |
| Volume | 3 |
| Issue number | 6 |
| DOIs | |
| State | Published - 8 Nov 2023 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2023 The Authors. Published by American Chemical Society.
Funding
U.S. acknowledges support from the Nella and Leon Benoziyo Center for Neurological Diseases. In addition, U.S. thanks the Perlman family for funding the Shimanovich Lab at the Weizmann Institute of Science: “This research was made possible in part by the generosity of the Harold Perlman Family”. The work was also supported by a research grant from the Perlman Family Foundation Founded by Anita and Louis Perlman C-AIM Young Scientist Fund. The authors would like to acknowledge partial support from the GMJ Schmidt Minerva Center of Supramolecular Architectures at the Weizmann Institute, the Mondry Family Fund for the University of Michigan/Weizmann collaboration, the Gerald Schwartz and Heather Reisman Foundation, and the WIS Sustainability and Energy Research Initiative (SAERI). This research was supported by a research grant from the Tom and Mary Beck Center for Advanced and Intelligent Materials at the Weizmann Institute of Science, Rehovot, Israel. I.P. is the incumbent of the Sharon Zuckerman research fellow chair. The authors are grateful to Dr. Sergey Semenov, Weizmann Institute of Science, Department of Organic Chemistry for providing us with 1 H,1 H,2 H,2 H-perfluorooctyltriethoxysilane, Dr. Daniel Petukhin and Prof. Oren Tal for providing us with polyimide, Sharon Garusi, the Weizmann Institute of Science, Department of Chemical Research Support, for help with gold evaporation, Dr. Yoav Barak the Weizmann Institute of Science, Department of Chemical Research Support, for help with UV–vis spectra measurements, Lyudmila Veikhman the Weizmann Institute of Science, Department of Chemical Research Support, for help with contact angle measurements, and Steve Manch for editing the English in the manuscript.
| Funders |
|---|
| Gerald Schwartz and Heather Reisman Foundation |
| Mondry Family Fund for the University of Michigan/Weizmann |
| Perlman family for funding the Shimanovich Lab |
| SAERI |
| Tom and Mary Beck Center for Advanced and Intelligent Materials at the Weizmann Institute of Science, Rehovot, Israel |
| WIS Sustainability and Energy Research Initiative |
| Weizmann Institute |
| Perlman Family Foundation |
| Weizmann Institute of Science |
Keywords
- SERS
- gold nanostructures and nanoparticles
- plasmonics
- soft printing
- solid polymer films
- tape lithography