Abstract
Nanoscale chemical imaging of a dynamic molecular phase boundary has broad implications for a range of problems in catalysis, surface science, and molecular electronics. While scanning probe microscopy (SPM) is commonly used to study molecular phase boundaries, its information content can be severely compromised by surface diffusion, irregular packing, or three-dimensional adsorbate geometry. Here, we demonstrate the simultaneous chemical and structural analysis of N-N′-bis(2,6-diisopropylphenyl)-1,7-(4′-t-butylphenoxy)perylene-3,4:9,10-bis(dicarboximide) (PPDI) molecules by UHV tip-enhanced Raman spectroscopy. Both condensed and diffusing domains of PPDI coexist on Ag(100) at room temperature. Through comparison with time-dependent density functional theory simulations, we unravel the orientation of PPDI molecules at the dynamic molecular domain boundary with unprecedented ∼4 nm spatial resolution.
| Original language | English |
|---|---|
| Pages (from-to) | 3898-3904 |
| Number of pages | 7 |
| Journal | Nano Letters |
| Volume | 16 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Jun 8 2016 |
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Keywords
- dynamic molecular phase boundary
- time-dependent density functional theory (TDDFT)
- Tip-enhanced Raman spectroscopy (TERS)
- ultrahigh vacuum scanning tunneling microscopy (UHV-STM)
ASJC Scopus subject areas
- Condensed Matter Physics
- Bioengineering
- Chemistry(all)
- Materials Science(all)
- Mechanical Engineering
Cite this
Nanoscale chemical imaging of a dynamic molecular phase boundary with ultrahigh vacuum tip-enhanced raman spectroscopy. / Jiang, Nan; Chiang, Naihao; Madison, Lindsey R.; Pozzi, Eric A.; Wasielewski, Michael R; Seideman, Tamar; Ratner, Mark A; Hersam, Mark C; Schatz, George C; Van Duyne, Richard P.
In: Nano Letters, Vol. 16, No. 6, 08.06.2016, p. 3898-3904.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Nanoscale chemical imaging of a dynamic molecular phase boundary with ultrahigh vacuum tip-enhanced raman spectroscopy
AU - Jiang, Nan
AU - Chiang, Naihao
AU - Madison, Lindsey R.
AU - Pozzi, Eric A.
AU - Wasielewski, Michael R
AU - Seideman, Tamar
AU - Ratner, Mark A
AU - Hersam, Mark C
AU - Schatz, George C
AU - Van Duyne, Richard P.
PY - 2016/6/8
Y1 - 2016/6/8
N2 - Nanoscale chemical imaging of a dynamic molecular phase boundary has broad implications for a range of problems in catalysis, surface science, and molecular electronics. While scanning probe microscopy (SPM) is commonly used to study molecular phase boundaries, its information content can be severely compromised by surface diffusion, irregular packing, or three-dimensional adsorbate geometry. Here, we demonstrate the simultaneous chemical and structural analysis of N-N′-bis(2,6-diisopropylphenyl)-1,7-(4′-t-butylphenoxy)perylene-3,4:9,10-bis(dicarboximide) (PPDI) molecules by UHV tip-enhanced Raman spectroscopy. Both condensed and diffusing domains of PPDI coexist on Ag(100) at room temperature. Through comparison with time-dependent density functional theory simulations, we unravel the orientation of PPDI molecules at the dynamic molecular domain boundary with unprecedented ∼4 nm spatial resolution.
AB - Nanoscale chemical imaging of a dynamic molecular phase boundary has broad implications for a range of problems in catalysis, surface science, and molecular electronics. While scanning probe microscopy (SPM) is commonly used to study molecular phase boundaries, its information content can be severely compromised by surface diffusion, irregular packing, or three-dimensional adsorbate geometry. Here, we demonstrate the simultaneous chemical and structural analysis of N-N′-bis(2,6-diisopropylphenyl)-1,7-(4′-t-butylphenoxy)perylene-3,4:9,10-bis(dicarboximide) (PPDI) molecules by UHV tip-enhanced Raman spectroscopy. Both condensed and diffusing domains of PPDI coexist on Ag(100) at room temperature. Through comparison with time-dependent density functional theory simulations, we unravel the orientation of PPDI molecules at the dynamic molecular domain boundary with unprecedented ∼4 nm spatial resolution.
KW - dynamic molecular phase boundary
KW - time-dependent density functional theory (TDDFT)
KW - Tip-enhanced Raman spectroscopy (TERS)
KW - ultrahigh vacuum scanning tunneling microscopy (UHV-STM)
UR - http://www.scopus.com/inward/record.url?scp=84974539740&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84974539740&partnerID=8YFLogxK
U2 - 10.1021/acs.nanolett.6b01405
DO - 10.1021/acs.nanolett.6b01405
M3 - Article
VL - 16
SP - 3898
EP - 3904
JO - Nano Letters
JF - Nano Letters
SN - 1530-6984
IS - 6
ER -