What question did this study set out to answer?

To determine whether intrinsic molecular fluorescence can be generated and vibrationally resolved from organic molecules positioned in close proximity to a metal substrate.

February 24, 2004Physical Review Letters

Vibrationally Resolved Fluorescence from Organic Molecules near Metal Surfaces in a Scanning Tunneling Microscope

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Authors

ZDZhen‐Chao DongUniversity of Science and Technology of China XGXinli GuoShenyang Medical College АТА.С. ТрифоновLomonosov Moscow State University

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Implication

Scanning tunneling microscopy investigation demonstrates vibrationally resolved fluorescence from porphyrin molecules on gold surfaces, indicating radiative decay driven by hot electron injection.

Key Points

To determine whether intrinsic molecular fluorescence can be generated and vibrationally resolved from organic molecules positioned in close proximity to a metal substrate.
Positioned porphyrin molecules on an Au(100) surface using a nanoscale multimonolayer decoupling architecture.
Excited the decoupled molecules using the nanoprobe of a scanning tunneling microscope operating within the tunneling regime.
Recorded well-defined, vibrationally resolved fluorescence spectra confirming the molecular origin of the observed luminescence.
Achieved molecular luminescence at low turn-on voltages across both positive and negative bias polarities, indicating excitation by hot electron injection from the probe tip or the substrate.
Demonstrated that excited porphyrins undergo radiative decay through Franck-Condon π*-π transitions.

Cite This Study

Dong et al. (2004) studied this question.

synapsesocial.com/papers/6a6fb59c53da1ffdb50794fa https://doi.org/10.1103/physrevlett.92.086801

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Implication

Scanning tunneling microscopy investigation demonstrates vibrationally resolved fluorescence from porphyrin molecules on gold surfaces, indicating radiative decay driven by hot electron injection.

Vibrationally Resolved Fluorescence from Organic Molecules near Metal Surfaces in a Scanning Tunneling Microscope

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Key Points

Cite This Study

Vibrationally Resolved Fluorescence from Organic Molecules near Metal Surfaces in a Scanning Tunneling Microscope

Discussion

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Implication

Key Points

Cite This Study

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