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Tip-enhanced Raman scattering (TERS) and optically excited tip-enhanced fluorescence (TEF) of a self-assembled porphyrin monolayer on Ag(111) are studied using an ultrahigh vacuum scanning tunneling microscope (UHV-STM). Through selectively exciting different Q-bands of meso-tetrakis- (3,5-ditertiarybutylphenyl)-porphyrin (H2TBPP), chemical information regarding different vibronic excited states is revealed by a combination of theory and experiment; namely, TERS and time-dependent density functional theory (TDDFT) simulations. The observed TEF spectra suggest a weak coupling of H2TBPP to the substrate due to the bulky t-butyl groups and a possible alternative excited state decay path. This work demonstrates the potential of combining TERS and TEF for studying surface-mounted porphyins on substrates, thus providing insight into porphyrin-sensitized solar cells and catalysis.
Naihao Chiang, and
Nan Jiang, and
Dhabih V Chulhai, and
Eric A Pozzi, and
Mark C Hersam, and
Lasse Jensen, and
Tamar Seideman, and
Richard P Van Duyne
October 2012,
Nano letters,
Naihao Chiang, and
Nan Jiang, and
Dhabih V Chulhai, and
Eric A Pozzi, and
Mark C Hersam, and
Lasse Jensen, and
Tamar Seideman, and
Richard P Van Duyne
November 2019,
Nanoscale,
Naihao Chiang, and
Nan Jiang, and
Dhabih V Chulhai, and
Eric A Pozzi, and
Mark C Hersam, and
Lasse Jensen, and
Tamar Seideman, and
Richard P Van Duyne
January 2013,
Methods in cell biology,
Naihao Chiang, and
Nan Jiang, and
Dhabih V Chulhai, and
Eric A Pozzi, and
Mark C Hersam, and
Lasse Jensen, and
Tamar Seideman, and
Richard P Van Duyne
March 2022,
Journal of physics. Condensed matter : an Institute of Physics journal,
Naihao Chiang, and
Nan Jiang, and
Dhabih V Chulhai, and
Eric A Pozzi, and
Mark C Hersam, and
Lasse Jensen, and
Tamar Seideman, and
Richard P Van Duyne
March 2014,
Journal of the American Chemical Society,
Naihao Chiang, and
Nan Jiang, and
Dhabih V Chulhai, and
Eric A Pozzi, and
Mark C Hersam, and
Lasse Jensen, and
Tamar Seideman, and
Richard P Van Duyne
June 2018,
Angewandte Chemie (International ed. in English),
Naihao Chiang, and
Nan Jiang, and
Dhabih V Chulhai, and
Eric A Pozzi, and
Mark C Hersam, and
Lasse Jensen, and
Tamar Seideman, and
Richard P Van Duyne
November 2017,
Physical review letters,
Naihao Chiang, and
Nan Jiang, and
Dhabih V Chulhai, and
Eric A Pozzi, and
Mark C Hersam, and
Lasse Jensen, and
Tamar Seideman, and
Richard P Van Duyne
May 2018,
The Review of scientific instruments,
Naihao Chiang, and
Nan Jiang, and
Dhabih V Chulhai, and
Eric A Pozzi, and
Mark C Hersam, and
Lasse Jensen, and
Tamar Seideman, and
Richard P Van Duyne
October 2007,
The Review of scientific instruments,
Naihao Chiang, and
Nan Jiang, and
Dhabih V Chulhai, and
Eric A Pozzi, and
Mark C Hersam, and
Lasse Jensen, and
Tamar Seideman, and
Richard P Van Duyne
April 2006,
The journal of physical chemistry. B,
