Mechano-optical switching of a single molecule with doublet emission

0539909 - FZÚ 2021 RIV US eng J - Journal Article
Doležal, Jiří - Mutombo, Pingo - Nachtigallová, Dana - Jelínek, Pavel - Merino, P. - Švec, Martin
Mechano-optical switching of a single molecule with doublet emission.
ACS Nano. Roč. 14, č. 7 (2020), s. 8931-8938. ISSN 1936-0851. E-ISSN 1936-086X
R&D Projects: GA MŠMT LM2018110; GA ČR(CZ) GA20-18741S; GA ČR(CZ) GA18-09914S
Grant - others:AV ČR(CZ) AP1601
Program: Akademická prémie - Praemium Academiae
Institutional support: RVO:68378271 ; RVO:61388963
Keywords : light scanning probe microscopy * porphyrin * single molecule light emission
OECD category: Condensed matter physics (including formerly solid state physics, supercond.); Physical chemistry (UOCHB-X)
Impact factor: 15.881, year: 2020
Method of publishing: Limited access
https://doi.org/10.1021/acsnano.0c03730

Here, we demonstrate that the excitonic state of a single CuPc molecule can be reproducibly switched by atomic scale manipulations permitting precise positioning of the molecule on the NaCl ionic crystal lattice. Using a combination of STML, AFM and ab-initio calculations, we show the modulation of electronic and optical bandgaps, and the exciton binding energy in CuPc by tens of meV. We explain this effect by spatially-dependent Coulomb interaction occurring at the molecule-insulator interface, which tunes the local dielectric environment of the emitter.
Permanent Link: http://hdl.handle.net/11104/0317603