DataVXACS NanoPaper
journal article·2015-12-22Open access

Molecular Self-Assembly in a Poorly Screened Environment: F4TCNQ on Graphene/BN

Hsin-Zon Tsai, Arash A. Omrani, Sinisa Coh, Hyungju Oh, Sebastian Wickenburg, Young-Woo Son, Dillon Wong, Alexander Riss, Han Sae Jung, Giang D. Nguyen, Griffin F. Rodgers, Andrew S. Aikawa, Takashi Taniguchi, Kenji Watanabe, Alex Zettl, Steven G. Louie, Jiong Lu, Marvin L. Cohen, Michael F. Crommie

ACS Nano· Volume 9· Issue 12
Publisher pageOpen full text
Source abstract

Abstract

We report a scanning tunneling microscopy and noncontact atomic force microscopy study of close-packed 2D islands of tetrafluorotetracyanoquinodimethane (F4TCNQ) molecules at the surface of a graphene layer supported by boron nitride. While F4TCNQ molecules are known to form cohesive 3D solids, the intermolecular interactions that are attractive for F4TCNQ in 3D are repulsive in 2D. Our experimental observation of cohesive molecular behavior for F4TCNQ on graphene is thus unexpected. This self-assembly behavior can be explained by a novel solid formation mechanism that occurs when charged molecules are placed in a poorly screened environment. As negatively charged molecules coalesce, the local work function increases, causing electrons to flow into the coalescing molecular island and increase its cohesive binding energy.
Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials

OpenAlex topics: Graphene research and applications · Molecular Junctions and Nanostructures · Electronic and Structural Properties of Oxides

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Physics, University of California, Berkeley, California 94720, United States

Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States

Korea Institute for Advanced Study, Seoul 130-722, Korea

National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan

Kavli Energy NanoSciences Institute at the University of California, Berkeley and the Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States

Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore

Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore, 6 Science Drive 2, Singapore 117546, Singapore

Funding

Austrian Science Fund · National Research Foundation-Prime Minister's office, Republic of Singapore · Schweizerische Nationalfonds zur F?rderung der Wissenschaftlichen Forschung · Basic Energy Sciences · Ministry of Education, Culture, Sports, Science, and Technology · Army Research Office · Lawrence Berkely National Laboratory · Division of Materials Research

References (38)

Show source-provided references
1. 10.1016/j.nantod.2013.07.00310.1016/j.nantod.2013.07.003 ↗
2. 10.1002/smll.20130198210.1002/smll.201301982 ↗
3. 10.1039/C4NR06470D10.1039/C4NR06470D ↗
4. 10.1021/ja071658g10.1021/ja071658g ↗
5. 10.1103/PhysRevB.81.23540110.1103/PhysRevB.81.235401 ↗
6. 10.1021/jp200386z10.1021/jp200386z ↗
7. 10.1038/nnano.2013.6310.1038/nnano.2013.63 ↗
8. 10.1103/PhysRevLett.95.23760110.1103/PhysRevLett.95.237601 ↗
9. 10.1103/PhysRevLett.99.25680110.1103/PhysRevLett.99.256801 ↗
10. 10.1021/ja072133r10.1021/ja072133r ↗
11. 10.1021/jz100463q10.1021/jz100463q ↗
12. 10.1103/PhysRevB.87.15531110.1103/PhysRevB.87.155311 ↗
13. 10.1021/acs.nanolett.5b0066810.1021/acs.nanolett.5b00668 ↗
14. 10.1039/C4NR02917H10.1039/C4NR02917H ↗
15. 10.1039/c0cc02675a10.1039/c0cc02675a ↗
16. 10.1021/jp306780n10.1021/jp306780n ↗
17. 10.1103/PhysRevB.83.15340310.1103/PhysRevB.83.153403 ↗
18. 10.1038/nmat296810.1038/nmat2968 ↗
19. 10.1021/nl200511510.1021/nl2005115 ↗
20. 10.1021/nl401265f10.1021/nl401265f ↗
21. 10.1021/nn501459v10.1021/nn501459v ↗
22. 10.1126/science.117621010.1126/science.1176210 ↗
23. 10.1103/PhysRevLett.111.10610310.1103/PhysRevLett.111.106103 ↗
24. 10.1103/PhysRevB.90.08542110.1103/PhysRevB.90.085421 ↗
25. 10.1103/PhysRevLett.113.18610210.1103/PhysRevLett.113.186102 ↗
26. 10.1080/0026894810808213210.1080/00268948108082132 ↗
27. 10.1038/ncomms664210.1038/ncomms6642 ↗
28. 10.1002/(SICI)1521-4095(199906)11:8<605::AID-ADMA605>3.0.CO;2-Q10.1002/(SICI)1521-4095(199906)11:8<605::AID-ADMA605>3.0.CO;2-Q ↗
29. 10.1103/PhysRevLett.111.22680210.1103/PhysRevLett.111.226802 ↗
30. Ashcroft N. W. · 1976 · 353
31. 10.1002/adma.20070168110.1002/adma.200701681 ↗
32. 10.1021/nn500265f10.1021/nn500265f ↗
33. 10.1126/science.117124510.1126/science.1171245 ↗
34. 10.1021/jp807380s10.1021/jp807380s ↗
35. 10.1063/1.243241010.1063/1.2432410 ↗
36. 10.1088/0953-8984/21/39/39550210.1088/0953-8984/21/39/395502 ↗
37. 10.1103/PhysRevB.82.08110110.1103/PhysRevB.82.081101 ↗
38. 10.1016/j.commatsci.2013.08.05310.1016/j.commatsci.2013.08.053 ↗