1
|
Ayani CG, Pisarra M, Urgel JI, Navarro JJ, Díaz C, Hayashi H, Yamada H, Calleja F, Miranda R, Fasel R, Martín F, Vázquez de Parga AL. Efficient photogeneration of nonacene on nanostructured graphene. NANOSCALE HORIZONS 2021; 6:744-750. [PMID: 34165121 DOI: 10.1039/d1nh00184a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The on-surface photogeneration of nonacene from α-bisdiketone precursors deposited on nanostructured epitaxial graphene grown on Ru(0001) has been studied by means of low temperature scanning tunneling microscopy and spectroscopy. The presence of an unoccupied surface state, spatially localized in the regions where the precursors are adsorbed, and energetically accessible in the region of the electromagnetic spectrum where n-π* transitions take place, allows for a 100% conversion of the precursors into nonacenes. With the help of state-of-the-art theoretical calculations, we show that such a high yield is due to the effective population of the surface state by the incoming light and the ensuing electron transfer to the unoccupied states of the precursors through an inelastic scattering mechanism. Our findings are the experimental confirmation that surface states can play a prominent role in the surface photochemistry of complex molecular systems, in accordance with early theoretical predictions made on small molecules.
Collapse
Affiliation(s)
- Cosme G Ayani
- Dep Física de la Materia Condensada, Universidad Autónoma de Madrid, Cantoblanco 28049, Madrid, Spain.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
2
|
Yamada T, Ito N, Kawakita N, Kato HS, Munakata T. Formation and regulation of unoccupied hybridized band with image potential states at perylene/graphite interface. J Chem Phys 2019; 151:224703. [DOI: 10.1063/1.5126373] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Affiliation(s)
- Takashi Yamada
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka 560-0043, Japan
| | - Natsumi Ito
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka 560-0043, Japan
| | - Noriaki Kawakita
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka 560-0043, Japan
| | - Hiroyuki S. Kato
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka 560-0043, Japan
| | - Toshiaki Munakata
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka 560-0043, Japan
| |
Collapse
|
3
|
Yamada T, Kawakita N, Okui C, Munakata T. Hybridization of an unoccupied molecular orbital with an image potential state at a lead phthalocyanine/graphite interface. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2019; 31:044004. [PMID: 30523835 DOI: 10.1088/1361-648x/aaf08e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The interaction of a molecular orbital with a surface state is important to understand the spatial distribution of the wave function at the molecule/substrate interface. In this study, we focus on hybridization of an unoccupied state of lead phthalocyanine (PbPc) with the image potential state (IPS) on a graphite surface. The hybridization modifies the energy-momentum dispersions of the IPS on PbPc films as observed by angle-resolved two-photon photoemission. On the PbPc 1 monolayer film, the IPS band forms a band gap and back-folding appears at the first Brillouin zone boundary due to the periodic potential by the adsorbate lattice. The modification of the dispersion is accompanied by the intensity enhancement of the IPS. We attributed the origin of the modified dispersion and intensity enhancement to a hybridization of the IPS with a molecule-derived unoccupied level. From the photon energy-dependent measurement on multilayer films, we have found the diffuse unoccupied molecular level in the vicinity of the IPS. The tail part of the IPS wave function in the substrate is enhanced by the hybridization with the unoccupied state, and thus strengthens the transition from the occupied substrate band to the hybridized IPS.
Collapse
|
4
|
Bahrim B, Stafford J, Makarenko B. Charge transfer during H/H−
collisions with Cu(100) and Cu(111) surfaces. SURF INTERFACE ANAL 2017. [DOI: 10.1002/sia.6360] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- B. Bahrim
- Department of Physics; Lamar University; Beaumont TX 77710 USA
| | - J. Stafford
- Department of Physics; Lamar University; Beaumont TX 77710 USA
| | - B. Makarenko
- Department of Chemistry; University of Houston; Houston TX 77204 USA
| |
Collapse
|
5
|
Aeschlimann M, Pawlik S, Bauer M. Femtosecond Time-Resolved Measurement of Electron Relaxation at Metal Surfaces. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/bbpc.199500115] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
6
|
Monti OLA. Understanding Interfacial Electronic Structure and Charge Transfer: An Electrostatic Perspective. J Phys Chem Lett 2012; 3:2342-51. [PMID: 26292112 DOI: 10.1021/jz300850x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The challenge of understanding electronic structure and dynamics at organic semiconductor interfaces arises from the richness and importance of weak interactions in thin films of extended π-conjugated molecules. In this Perspective, I discuss a conceptually simple electrostatic approach toward a molecular-level description of the electronic structure and dynamics at a subset of such interfaces. Self-assembled monolayers of oriented dipolar molecules physisorbed on metal surfaces generate sizable collective electric fields, and electrostatics determines the key factors for energy level alignment and molecular electronic structure. A rigorous quantum mechanical treatment of such interfaces supports this conclusion and sheds light on the subtle interplay of the different interfacial interactions. The electrostatic model of the interface has the potential to offer also insights into the role of strong collective electric fields on interfacial charge-transfer dynamics.
Collapse
Affiliation(s)
- Oliver L A Monti
- Department of Chemistry and Biochemistry, The University of Arizona, 1306 East University Boulevard, Tucson, Arizona 85721, United States
| |
Collapse
|
7
|
Steele MP, Kelly LL, Ilyas N, Monti OLA. Resonance and localization effects at a dipolar organic semiconductor interface. J Chem Phys 2011; 135:124702. [DOI: 10.1063/1.3637051] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
8
|
Steele MP, Blumenfeld ML, Monti OLA. Image states at the interface with a dipolar organic semiconductor. J Chem Phys 2010; 133:124701. [DOI: 10.1063/1.3481783] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
9
|
Kim KH, Watanabe K, Menzel D, Freund HJ. UV photo-dissociation and photodesorption of N2O on Ag(111). JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2010; 22:084012. [PMID: 21389388 DOI: 10.1088/0953-8984/22/8/084012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Nanosecond laser induced photoreactions of N2O adsorbed on Ag(111) have been studied by temperature programmed desorption (TPD) and mass-selected, angle-dependent time-of-flight (MS-TOF) measurements of neutral desorbing particles. N2O molecules in the first monolayer are thermally inert but photo-dissociate into N2 + O, or photodesorb molecularly or dissociatively, at photon energies above 3.5 eV. We have found that TOF spectra of photodesorbed N2 as well as of N2O measured at hν = 4.7 eV consist of two velocity components. The desorption flux of the fastest component of N2O peaks ∼ 25° off the surface normal, whereas the others are directed in the surface normal. Origins and photo-excitation as well as photodesorption mechanisms of the N2O and N2 signals are discussed.
Collapse
Affiliation(s)
- Ki Hyun Kim
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | | | | | | |
Collapse
|
10
|
Jensen ET. Charge-transfer photodissociation of adsorbed molecules via electron image states. J Chem Phys 2008; 128:044301. [DOI: 10.1063/1.2822331] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
11
|
Lindstrom CD, Zhu XY. Photoinduced Electron Transfer at Molecule−Metal Interfaces. Chem Rev 2006; 106:4281-300. [PMID: 17031987 DOI: 10.1021/cr0501689] [Citation(s) in RCA: 138] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- C D Lindstrom
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | | |
Collapse
|
12
|
Osgood R. Photoreaction Dynamics of Molecular Adsorbates on Semiconductor and Oxide Surfaces. Chem Rev 2006; 106:4379-401. [PMID: 17031991 DOI: 10.1021/cr050175x] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Richard Osgood
- Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA
| |
Collapse
|
13
|
Camillone N, Khan KA, Yarmoff JA, Osgood RM. Surface-reconstruction-switched adsorbate photofragmentation dynamics. PHYSICAL REVIEW LETTERS 2001; 87:056101. [PMID: 11497789 DOI: 10.1103/physrevlett.87.056101] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2000] [Indexed: 05/23/2023]
Abstract
Energy-resolved angular distributions of neutral fragments ejected during photoinduced electron transfer reaction of CH3Br on GaAs(100) exhibit three distinct methyl-radical ejection channels. These undergo marked changes when the termination is switched from the Ga-rich c(8 x 2) to the As-rich c(2 x 8). Our observations are consistent with a strong adsorption-site dependence of the dynamics.
Collapse
Affiliation(s)
- N Camillone
- Columbia Radiation Laboratory, Columbia University, New York, New York 10027, USA.
| | | | | | | |
Collapse
|
14
|
Ag thin film on Si as the lubricant under ultra-high vacuum and the effect of adsorbed gas molecules on friction. ACTA ACUST UNITED AC 2001. [DOI: 10.1016/s0167-8922(01)80136-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
|
15
|
Zehr R, Solodukhin A, Haynie BC, French C, Harrison I. Low-Temperature and Photon-Induced Chemistry of Nitrogen on Pt(111). J Phys Chem B 2000. [DOI: 10.1021/jp993490u] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- R. Zehr
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904
| | - A. Solodukhin
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904
| | - B. C. Haynie
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904
| | - C. French
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904
| | - I. Harrison
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904
| |
Collapse
|
16
|
Khan KA, Camillone N, Osgood RM. Photoinitiated electron transfer to selected physisorbed alkyl bromides: The effects of alkyl chain length on dissociation cross sections. J Chem Phys 1999. [DOI: 10.1063/1.478984] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
17
|
|
18
|
Hotzel A, Ishioka K, Knoesel E, Wolf M, Ertl G. Can we control lifetimes of electronic states at surfaces by adsorbate resonances? Chem Phys Lett 1998. [DOI: 10.1016/s0009-2614(98)00054-2] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
19
|
Wolf M, Knoesel E, Hertel T. Ultrafast dynamics of electrons in image-potential states on clean and Xe-covered Cu(111). PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:R5295-R5298. [PMID: 9986592 DOI: 10.1103/physrevb.54.r5295] [Citation(s) in RCA: 119] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
20
|
Rous PJ. Layer-KKR theory of negative-ion formation in adsorbed molecules. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:11076-11090. [PMID: 9982680 DOI: 10.1103/physrevb.53.11076] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
21
|
Aeschlimann M, Bauer M, Pawlik S. Competing nonradiative channels for hot electron induced surface photochemistry. Chem Phys 1996. [DOI: 10.1016/0301-0104(95)00372-x] [Citation(s) in RCA: 136] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
22
|
Siller L, Bennett SL, MacDonald MA, Bennett RA, Palmer RE, Foord JS. Surface enhanced photodissociation of physisorbed molecules. PHYSICAL REVIEW LETTERS 1996; 76:1960-1963. [PMID: 10060564 DOI: 10.1103/physrevlett.76.1960] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
|
23
|
Sanche L, Bass AD, Ayotte P, Fabrikant II. Effect of the Condensed Phase on Dissociative Electron Attachment: CH3Cl Condensed on a Kr Surface. PHYSICAL REVIEW LETTERS 1995; 75:3568-3571. [PMID: 10059619 DOI: 10.1103/physrevlett.75.3568] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
|
24
|
Tang KB, Rous PJ, Palmer RE. Energy and lifetime of the sigma resonance of oriented O2 physisorbed on Ag(110). PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:12395-12401. [PMID: 9980381 DOI: 10.1103/physrevb.52.12395] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|