TY - JOUR
T1 - Tunneling electron induced photon emission from monolayered H2TBP porphyrin molecules on Cu( 1 0 0 )
AU - Dong, Z. C.
AU - Trifonov, A. S.
AU - Guo, X. L.
AU - Amemiya, K.
AU - Yokoyama, S.
AU - Kamikado, T.
AU - Yamada, T.
AU - Mashiko, S.
AU - Okamoto, T.
N1 - Funding Information:
This work is funded by the Ministry of Education, Culture, Sports, Science and Technology of Japan.
PY - 2003/6/10
Y1 - 2003/6/10
N2 - Positioning of a clean scanning tunneling microscope tip above a monolayer of free-base porphyrin (H2TBPP) molecules on Cu(100) is found to induce merely plasmon-mediated emission with molecular fluorescence completely quenched. The molecule acts as a spacer to increase the tip-metal substrate distance to make spectra blue-shifted. Additional broad emissions at low energies may be associated with the molecules either adsorbed onto the tip apex or on the second monolayer and might suggest the involvement of modified molecular fluorescence. In both cases, the energy transfer from molecular excited states to the metal substrate is overwhelmingly dominant, leading to enhanced plasmon-mediated emission.
AB - Positioning of a clean scanning tunneling microscope tip above a monolayer of free-base porphyrin (H2TBPP) molecules on Cu(100) is found to induce merely plasmon-mediated emission with molecular fluorescence completely quenched. The molecule acts as a spacer to increase the tip-metal substrate distance to make spectra blue-shifted. Additional broad emissions at low energies may be associated with the molecules either adsorbed onto the tip apex or on the second monolayer and might suggest the involvement of modified molecular fluorescence. In both cases, the energy transfer from molecular excited states to the metal substrate is overwhelmingly dominant, leading to enhanced plasmon-mediated emission.
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U2 - 10.1016/S0039-6028(03)00162-6
DO - 10.1016/S0039-6028(03)00162-6
M3 - Conference article
AN - SCOPUS:0038526404
VL - 532-535
SP - 237
EP - 243
JO - Surface Science
JF - Surface Science
SN - 0039-6028
T2 - Proceedings of the 7th International Conference on Nanometer
Y2 - 29 August 2002 through 31 August 2002
ER -