Journal
NANO LETTERS
Volume 16, Issue 6, Pages 3898-3904Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.6b01405
Keywords
Tip-enhanced Raman spectroscopy (TERS); ultrahigh vacuum scanning tunneling microscopy (UHV-STM); time-dependent density functional theory (TDDFT); dynamic molecular phase boundary
Categories
Funding
- Department of Energy Office of Basic Energy Sciences (SISGR) [DE-FG02-09ER16109]
- National Science Foundation [DGE-1324585, CHE-1414466, DMR-1121262]
- National Science Foundation Materials Research Science and Engineering Center [DMR-1121262]
- National Science Foundation Center for Chemical Innovation [CHE-1414466]
- Department of Energy [DE-FG02-09ER16109]
- Chemical Sciences, Geosciences, and Biosciences Division, Office of Basic Energy Sciences, Department of Energy [DE-FG02-99ER14999]
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1414466] Funding Source: National Science Foundation
Ask authors/readers for more resources
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 similar to 4 nm spatial resolution.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available