TY  - JOUR
A1  - Sarhan, Radwan Mohamed
A1  - Koopman, Wouter-Willem Adriaan
A1  - Pudell, Jan-Etienne
A1  - Stete, Felix
A1  - Rössle, Matthias
A1  - Herzog, Marc
A1  - Schmitt, Clemens Nikolaus Zeno
A1  - Liebig, Ferenc
A1  - Koetz, Joachim
A1  - Bargheer, Matias
T1  - Scaling up nanoplasmon catalysis
T2  - The journal of physical chemistry : C, Nanomaterials and interfaces
N2  - Nanoscale heating by optical excitation of plasmonic nanoparticles offers a new perspective of controlling chemical reactions, where heat is not spatially uniform as in conventional macroscopic heating but strong temperature gradients exist around microscopic hot spots. In nanoplasmonics, metal particles act as a nanosource of light, heat, and energetic electrons driven by resonant excitation of their localized surface plasmon resonance. As an example of the coupling reaction of 4-nitrothiophenol into 4,4′-dimercaptoazobenzene, we show that besides the nanoscopic heat distribution at hot spots, the microscopic distribution of heat dictated by the spot size of the light focus also plays a crucial role in the design of plasmonic nanoreactors. Small sizes of laser spots enable high intensities to drive plasmon-assisted catalysis. This facilitates the observation of such reactions by surface-enhanced Raman scattering, but it challenges attempts to scale nanoplasmonic chemistry up to large areas, where the excess heat must be dissipated by one-dimensional heat transport.
KW  - Gold
KW  - Raman spectroscopy
KW  - Silicon
KW  - Irradiation
KW  - Lasers
Y1  - 2019
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/49731
SN  - 1932-7447
VL  - 123
IS  - 14
SP  - 9352
EP  - 9357
PB  - American Chemical Society
CY  - Washington
ER  -