1
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Jing Y, Liang K, Muir NS, Zhou H, Li Z, Palasz JM, Sorbie J, Wang C, Cushing SK, Kubiak CP, Sofer Z, Li S, Xiong W. Ultrafast Formation of Charge Transfer Trions at Molecular-Functionalized 2D MoS 2 Interfaces. Angew Chem Int Ed Engl 2024; 63:e202405123. [PMID: 38714495 DOI: 10.1002/anie.202405123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 05/03/2024] [Accepted: 05/07/2024] [Indexed: 05/10/2024]
Abstract
In this work, we investigate trion dynamics occurring at the heterojunction between organometallic molecules and a monolayer transition metal dichalcogenide (TMD) with transient electronic sum frequency generation (tr-ESFG) spectroscopy. By pumping at 2.4 eV with laser pulses, we have observed an ultrafast hole transfer, succeeded by the emergence of charge-transfer trions. This observation is facilitated by the cancellation of ground state bleach and stimulated emission signals due to their opposite phases, making tr-ESFG especially sensitive to the trion formation dynamics. The presence of charge-transfer trion at molecular functionalized TMD monolayers suggests the potential for engineering the local electronic structures and dynamics of specific locations on TMDs and offers a potential for transferring unique electronic attributes of TMD to the molecular layers.
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Affiliation(s)
- Yuancheng Jing
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, MC 0358, La Jolla, California, 92093-0358, United States
| | - Kangkai Liang
- Material Science and Engineering Program, University of California, San Diego, 9500 Gilman Drive, MC 0418, La Jolla, California, 92093-0418, United States
| | - Nicole S Muir
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, MC 0358, La Jolla, California, 92093-0358, United States
| | - Hao Zhou
- Material Science and Engineering Program, University of California, San Diego, 9500 Gilman Drive, MC 0418, La Jolla, California, 92093-0418, United States
| | - Zhehao Li
- Material Science and Engineering Program, University of California, San Diego, 9500 Gilman Drive, MC 0418, La Jolla, California, 92093-0418, United States
| | - Joseph M Palasz
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, MC 0358, La Jolla, California, 92093-0358, United States
| | - Jonathan Sorbie
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, MC 0358, La Jolla, California, 92093-0358, United States
| | - Chenglai Wang
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, MC 0358, La Jolla, California, 92093-0358, United States
| | - Scott K Cushing
- Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E California Blvd, MC 127-72, Pasadena, California, 91125, United States
| | - Clifford P Kubiak
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, MC 0358, La Jolla, California, 92093-0358, United States
| | - Zdeněk Sofer
- Department of Inorganic Chemistry, University of Chemistry and Technology, Prague, Technická 5, 166 28, Prague 6, Czech Republic
| | - Shaowei Li
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, MC 0358, La Jolla, California, 92093-0358, United States
- Material Science and Engineering Program, University of California, San Diego, 9500 Gilman Drive, MC 0418, La Jolla, California, 92093-0418, United States
| | - Wei Xiong
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, MC 0358, La Jolla, California, 92093-0358, United States
- Material Science and Engineering Program, University of California, San Diego, 9500 Gilman Drive, MC 0418, La Jolla, California, 92093-0418, United States
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2
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Canton-Vitoria R, Kitaura R. Insulating 6,6-Phenyl-C61-butyric Acid Methyl Ester on Transition-Metal Dichalcogenides: Impact of the Hybrid Materials on the Optical and Electrical Properties. Chemistry 2024; 30:e202400150. [PMID: 38302733 DOI: 10.1002/chem.202400150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 01/30/2024] [Accepted: 01/31/2024] [Indexed: 02/03/2024]
Abstract
In this study we develop a strategy to insulate 6,6 -Phenyl C61 butyric acid methyl ester (PCBM) on the basal plane of transition metal dichalcogenides (TMDs). Concretely single layers of MoS2, MoSe2, MoTe2, WS2, WSe2 and WTe2 and ultrathin MoO2 and WO2 were grown via chemical vapor deposition (CVD). Then, the thiol group of a PCBM modified with cysteine reacts with the chalcogen vacancies on the basal plane of TMDs, yielding PCBM-MoS2, PCBM-MoSe2, PCBM-WS2, PCBM-WSe2, PCBM-WTe2, PCBM-MoO2 and PCBM-WO2. Afterwards, all the hybrid materials were characterized using several techniques, including XPS, Raman spectroscopy, TEM, AFM, and cyclic voltammetry. Furthermore, PCBM causes a unique optical and electrical impact in every TMDs. For MoS2 devices, the conductivity and photoluminescence (PL) emission achieve a remarkable enhancement of 1700 % and 200 % in PCBM-MoS2 hybrids. Similarly, PCBM-MoTe2 hybrids exhibit a 2-fold enhancement in PL emission at 1.1 eV. On the other hand, PCBM-MoSe2, PCBM-WSe2 and PCBM-WS2 hybrids exhibited a new interlayer exciton at 1.29-1.44, 1.7 and 1.37-154 eV along with an enhancement of the photo-response by 2400, 3200 and 600 %, respectively. Additionally, PCBM-WTe2 and PCBM-WO2 showed a modest photo-response, in sharp contrast with pristine WTe2 or WO2 which archive pure metallic character.
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Affiliation(s)
- Ruben Canton-Vitoria
- Department of Chemistry, Nagoya University, Nagoya, Aichi, 464-8602, Japan
- Theoretical and Physical Chemistry Institute Department of Chemistry, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635, Athens, Greec
| | - Ryo Kitaura
- Department of Chemistry, Nagoya University, Nagoya, Aichi, 464-8602, Japan
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan
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3
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Rudayni F, Rijal K, Fuller N, Chan WL. Enthalpy-uphill exciton dissociation in organic/2D heterostructures promotes free carrier generation. MATERIALS HORIZONS 2024; 11:813-821. [PMID: 38018228 DOI: 10.1039/d3mh01522j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2023]
Abstract
Despite the large binding energy of charge transfer (CT) excitons in type-II organic/2D heterostructures, it has been demonstrated that free carriers can be generated from CT excitons with a long lifetime. Using a model fluorinated zine phthalocyanine (F8ZnPc)/monolayer-WS2 interface, we find that CT excitons can dissociate spontaneously into free carriers despite it being an enthalpy-uphill process. Specifically, it is observed that CT excitons can gain an energy of 250 meV in 50 ps and dissociate into free carriers without any applied electric field. This observation is surprising because excited electrons typically lose energy to the environment and relax to lower energy states. We hypothesize that this abnormal enthalpy-uphill CT exciton dissociation process is driven by entropy gain. Kinetically, the entropic driving force can also reduce the rate for the reverse process - the conversion of free electron-hole pairs back to CT excitons. Hence, this mechanism can potentially explain the very long carrier lifetime observed in organic/2D heterostructures.
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Affiliation(s)
- Fatimah Rudayni
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, US.
- Department of Physics, Jazan University, Jazan 45142, Saudi Arabia
| | - Kushal Rijal
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, US.
| | - Neno Fuller
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, US.
| | - Wai-Lun Chan
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, US.
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4
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Alsaleh AZ, Pinjari D, Misra R, D'Souza F. Far-Red Excitation Induced Electron Transfer in Bis Donor-AzaBODIPY Push-Pull Systems; Role of Nitrogenous Donors in Promoting Charge Separation. Chemistry 2023; 29:e202301659. [PMID: 37401835 DOI: 10.1002/chem.202301659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 07/03/2023] [Accepted: 07/04/2023] [Indexed: 07/05/2023]
Abstract
A far-red absorbing sensitizer, BF2 -chelated azadipyrromethane (azaBODIPY) has been employed as an electron acceptor to synthesize a series of push-pull systems linked with different nitrogenous electron donors, viz., N,N-dimethylaniline (NND), triphenylamine (TPA), and phenothiazine (PTZ) via an acetylene linker. The structural integrity of the newly synthesized push-pull systems was established by spectroscopic, electrochemical, spectroelectrochemical, and DFT computational methods. Cyclic and differential pulse voltammetry studies revealed different redox states and helped in the estimation of the energies of the charge-separated states. Further, spectroelectrochemical studies performed in a thin-layer optical cell revealed diagnostic peaks of azaBODIPY⋅- in the visible and near-IR regions. Free-energy calculations revealed the charge separation from one of the covalently linked donors to the 1 azaBODIPY* to yield Donor⋅+ -azaBODIPY⋅- to be energetically favorable in a polar solvent, benzonitrile, and the frontier orbitals generated on the optimized structures helped in assessing such a conclusion. Consequently, the steady-state emission studies revealed quenching of the azaBODIPY fluorescence in all of the investigated push-pull systems in benzonitrile and to a lesser extent in mildly polar dichlorobenzene, and nonpolar toluene. The femtosecond pump-probe studies revealed the occurrence of excited charge transfer (CT) in nonpolar toluene while a complete charge separation (CS) for all three push-pull systems in polar benzonitrile. The CT/CS products populated the low-lying 3 azaBODIPY* prior to returning to the ground state. Global target (GloTarAn) analysis of the transient data revealed the lifetime of the final charge-separated states (CSS) to be 195 ps for NND-derived, 50 ps for TPA-derived, and 85 ps for PTZ-derived push-pull systems in benzonitrile.
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Affiliation(s)
- Ajyal Z Alsaleh
- Department of Chemistry, University of North Texas, Denton, TX 76203-5017, USA
| | - Dilip Pinjari
- Department of Chemistry, Indian Institute of Technology, Indore, 453552, India
| | - Rajneesh Misra
- Department of Chemistry, Indian Institute of Technology, Indore, 453552, India
| | - Francis D'Souza
- Department of Chemistry, University of North Texas, Denton, TX 76203-5017, USA
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5
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Rijal K, Amos S, Valencia-Acuna P, Rudayni F, Fuller N, Zhao H, Peelaers H, Chan WL. Nanoscale Periodic Trapping Sites for Interlayer Excitons Built by Deformable Molecular Crystal on 2D Crystal. ACS NANO 2023; 17:7775-7786. [PMID: 37042658 DOI: 10.1021/acsnano.3c00541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
The nanoscale moiré pattern formed at 2D transition-metal dichalcogenide crystal (TMDC) heterostructures provides periodic trapping sites for excitons, which is essential for realizing various exotic phases such as artificial exciton lattices, Bose-Einstein condensates, and exciton insulators. At organic molecule/TMDC heterostructures, similar periodic potentials can be formed via other degrees of freedom. Here, we utilize the structure deformability of a 2D molecular crystal as a degree of freedom to create a periodic nanoscale potential that can trap interlayer excitons (IXs). Specifically, two semiconducting molecules, PTCDI and PTCDA, which possess similar band gaps and ionization potentials but form different lattice structures on MoS2, are investigated. The PTCDI lattice on MoS2 is distorted geometrically, which lifts the degeneracy of the two molecules within the crystal's unit cell. The degeneracy lifting results in a spatial variation of the molecular orbital energy, with an amplitude and periodicity of ∼0.2 eV and ∼2 nm, respectively. On the other hand, no such energy variation is observed in PTCDA/MoS2, where the PTCDA lattice is much less distorted. The periodic variation in molecular orbital energies provides effective trapping sites for IXs. For IXs formed at PTCDI/MoS2, rapid spatial localization of the electron in the organic layer toward the interface is observed, which demonstrates the effectiveness of these interfacial IX traps.
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Affiliation(s)
- Kushal Rijal
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, United States
| | - Stephanie Amos
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, United States
| | - Pavel Valencia-Acuna
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, United States
| | - Fatimah Rudayni
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, United States
- Department of Physics, Jazan University, Jazan 45142, Saudi Arabia
| | - Neno Fuller
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, United States
| | - Hui Zhao
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, United States
| | - Hartwin Peelaers
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, United States
| | - Wai-Lun Chan
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, United States
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6
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Lei Y, Zheng Z, Vasquez L, Zhao J, Ma J, Ma H. Enhanced Electron Transfer and Spin Flip through Spin-Orbital Couplings in Organic/Inorganic Heterojunctions: A Nonadiabatic Surface Hopping Simulation. J Phys Chem Lett 2022; 13:4840-4848. [PMID: 35616399 DOI: 10.1021/acs.jpclett.2c01177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The circumstances of transferred electrons across organic/inorganic interfaces have attracted intensive interest because of the distinctive electronic structure properties of those two components. Leveraging ab initio nonadiabatic molecular dynamics methods in conjunction with spin dynamics induced by spin-orbital couplings (SOCs), this study reports two competitive channels during photoinduced dynamical processes in the prototypical ZnPc/monolayer MoS2 heterojunction. Interestingly, the electron-transfer and relaxation processes occur simultaneously because of the enhancement of electron-phonon couplings and expansion of dynamical pathways by SOCs, suggesting that the electron-transfer rate and relaxation processes can be tuned by SOCs, hence yielding the performance promotion of photovoltaic and photocatalytic devices. Additionally, approximately half of the transferred electrons flip their spin within 1.6 ps because of strong SOCs in MoS2, achieving great agreement with experimental measurements. This investigation provides instructive perspectives for designing novel devices and applications based on organic/inorganic heterojunctions, demonstrating the importance of spin dynamics simulations in exploring sophisticated photoinduced processes in materials.
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Affiliation(s)
- Yuli Lei
- Jiangsu Key Laboratory of Vehicle Emissions Control, Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Zhenfa Zheng
- Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Luis Vasquez
- Jiangsu Key Laboratory of Vehicle Emissions Control, Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Jin Zhao
- Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jing Ma
- Jiangsu Key Laboratory of Vehicle Emissions Control, Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Haibo Ma
- Jiangsu Key Laboratory of Vehicle Emissions Control, Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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7
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Sideri IK, Jang Y, Garcés-Garcés J, Sastre-Santos Á, Canton-Vitoria R, Kitaura R, Fernández-Lázaro F, D'Souza F, Tagmatarchis N. Unveiling the Photoinduced Electron-Donating Character of MoS 2 in Covalently Linked Hybrids Featuring Perylenediimide. Angew Chem Int Ed Engl 2021; 60:9120-9126. [PMID: 33559945 DOI: 10.1002/anie.202016249] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Indexed: 11/07/2022]
Abstract
The covalent functionalization of MoS2 with a perylenediimide (PDI) is reported and the study is accompanied by detailed characterization of the newly prepared MoS2 -PDI hybrid material. Covalently functionalized MoS2 interfacing organic photoactive species has shown electron and/or energy accepting, energy reflecting or bi-directional electron accepting features. Herein, a rationally designed PDI, unsubstituted at the perylene core to act as electron acceptor, forces MoS2 to fully demonstrate for the first time its electron donor capabilities. The photophysical response of MoS2 -PDI is visualized in an energy-level diagram, while femtosecond transient absorption studies disclose the formation of MoS2 .+ -PDI.- charge separated state. The tunable electronic properties of MoS2 , as a result of covalently linking photoactive organic species with precise characteristics, unlock their potentiality and enable their application in light-harvesting and optoelectronic devices.
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Affiliation(s)
- Ioanna K Sideri
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635, Athens, Greece
| | - Youngwoo Jang
- Department of Chemistry, University of North Texas, 1155 Union Circle, 305070, Denton, TX, 76203-5017, USA
| | - Jose Garcés-Garcés
- Área de Química Orgánica, Instituto de Bioingeniería, Universidad Miguel Hernández, 03202, Elche, Spain
| | - Ángela Sastre-Santos
- Área de Química Orgánica, Instituto de Bioingeniería, Universidad Miguel Hernández, 03202, Elche, Spain
| | | | - Ryo Kitaura
- Department of Chemistry, Nagoya University, Nagoya, 464-8602, Japan
| | - Fernando Fernández-Lázaro
- Área de Química Orgánica, Instituto de Bioingeniería, Universidad Miguel Hernández, 03202, Elche, Spain
| | - Francis D'Souza
- Department of Chemistry, University of North Texas, 1155 Union Circle, 305070, Denton, TX, 76203-5017, USA
| | - Nikos Tagmatarchis
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635, Athens, Greece
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8
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Sideri IK, Jang Y, Garcés‐Garcés J, Sastre‐Santos Á, Canton‐Vitoria R, Kitaura R, Fernández‐Lázaro F, D'Souza F, Tagmatarchis N. Unveiling the Photoinduced Electron‐Donating Character of MoS
2
in Covalently Linked Hybrids Featuring Perylenediimide. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202016249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ioanna K. Sideri
- Theoretical and Physical Chemistry Institute National Hellenic Research Foundation 48 Vassileos Constantinou Avenue 11635 Athens Greece
| | - Youngwoo Jang
- Department of Chemistry University of North Texas 1155 Union Circle, 305070 Denton TX 76203-5017 USA
| | - Jose Garcés‐Garcés
- Área de Química Orgánica Instituto de Bioingeniería Universidad Miguel Hernández 03202 Elche Spain
| | - Ángela Sastre‐Santos
- Área de Química Orgánica Instituto de Bioingeniería Universidad Miguel Hernández 03202 Elche Spain
| | | | - Ryo Kitaura
- Department of Chemistry Nagoya University Nagoya 464-8602 Japan
| | | | - Francis D'Souza
- Department of Chemistry University of North Texas 1155 Union Circle, 305070 Denton TX 76203-5017 USA
| | - Nikos Tagmatarchis
- Theoretical and Physical Chemistry Institute National Hellenic Research Foundation 48 Vassileos Constantinou Avenue 11635 Athens Greece
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9
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Vázquez Sulleiro M, Quirós-Ovies R, Vera-Hidalgo M, Gómez IJ, Sebastián V, Santamaría J, Pérez EM. Covalent Cross-Linking of 2H-MoS 2 Nanosheets. Chemistry 2021; 27:2993-2996. [PMID: 33231902 DOI: 10.1002/chem.202004366] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 11/15/2020] [Indexed: 11/09/2022]
Abstract
The combination of 2D materials opens a wide range of possibilities to create new-generation structures with multiple applications. Covalently cross-linked approaches are a ground-breaking strategy for the formation of homo or heterostructures made by design. However, the covalent assembly of transition metal dichalcogenides flakes is relatively underexplored. Here, a simple covalent cross-linking method to build 2H-MoS2 -MoS2 homostructures is described, using commercially available bismaleimides. These assemblies are mainly connected vertically, basal plane to basal plane, creating specific molecular sized spaces between MoS2 sheets. Therefore, this straightforward approach gives access to the controlled connection of sulfide-based 2D materials.
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Affiliation(s)
| | - Ramiro Quirós-Ovies
- IMDEA Nanociencia, C/Faraday 9 Ciudad Universitaria de Cantoblanco, 28049, Madrid, Spain
| | - Mariano Vera-Hidalgo
- IMDEA Nanociencia, C/Faraday 9 Ciudad Universitaria de Cantoblanco, 28049, Madrid, Spain
| | - I Jénnifer Gómez
- CEITEC Masaryk University, Kamenice 5, 62500, Brno, Czech Republic
| | - Víctor Sebastián
- Department of Chemical and Environmental Engineering, Universidad de Zaragoza, Campus Rio Ebro, 50018, Zaragoza, Spain.,Instituto de Ciencia de Materiales de Aragon (ICMA), CSIC-Universidad de Zaragoza, 50009, Zaragoza, Spain
| | - Jesús Santamaría
- Department of Chemical and Environmental Engineering, Universidad de Zaragoza, Campus Rio Ebro, 50018, Zaragoza, Spain.,Instituto de Ciencia de Materiales de Aragon (ICMA), CSIC-Universidad de Zaragoza, 50009, Zaragoza, Spain.,Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28029, Madrid, Spain
| | - Emilio M Pérez
- IMDEA Nanociencia, C/Faraday 9 Ciudad Universitaria de Cantoblanco, 28049, Madrid, Spain
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10
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MoS2/CoAl-LDH heterostructure for enhanced efficient of oxygen evolution reaction. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125419] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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11
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Popli C, Jang Y, Patil Y, Misra R, D'Souza F. Formation of Highly Efficient, Long‐Lived Charge Separated States in Star‐Shaped Ferrocene‐Diketopyrrolopyrrole‐Triphenylamine Donor–Acceptor–Donor Conjugates. Chemistry 2020; 26:15109-15115. [DOI: 10.1002/chem.202002851] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 06/25/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Charu Popli
- Department of Chemistry Indian Institute of Technology Indore 453552 India
| | - Youngwoo Jang
- Department of Chemistry University of North Texas 1155 Union Circle, #305070 Denton TX 76203-5017 USA
| | - Yuvraj Patil
- Department of Chemistry Indian Institute of Technology Indore 453552 India
| | - Rajneesh Misra
- Department of Chemistry Indian Institute of Technology Indore 453552 India
| | - Francis D'Souza
- Department of Chemistry University of North Texas 1155 Union Circle, #305070 Denton TX 76203-5017 USA
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12
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Rijal K, Rudayni F, Kafle TR, Chan WL. Collective Effects of Band Offset and Wave Function Dimensionality on Impeding Electron Transfer from 2D to Organic Crystals. J Phys Chem Lett 2020; 11:7495-7501. [PMID: 32812767 DOI: 10.1021/acs.jpclett.0c01796] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Excited-state electron transfer (ET) across molecules/transition metal dichalcogenide crystal (TMDC) interfaces is a critical process for the functioning of various organic/TMDC hybrid optoelectronic devices. Therefore, it is important to understand the fundamental factors that can facilitate or limit the ET rate. Here it is found that an undesirable combination of the interfacial band offset and the spatial dimensionality of the delocalized electron wave function can significantly slow down the ET process. Specifically, it is found that whereas the ET rate from TMDCs (MoS2 and WSe2) to fullerenes is relative insensitive to the band offset, the ET rate from TMDCs to perylene molecules can be reduced by an order of magnitude when the band offset is large. For the perylene crystal, the sensitivity of the ET rate on the band offset is explained by the 1D nature of the electronic wave function, which limits the availability of states with the appropriate energy to accept the electron.
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Affiliation(s)
- Kushal Rijal
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, United States
| | - Fatimah Rudayni
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, United States
| | - Tika R Kafle
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, United States
| | - Wai-Lun Chan
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, United States
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13
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Grieger S, Szydłowska BM, Rao VJ, Steinmann E, Dodds M, Gholamvand Z, Duesberg GS, Zaumseil J, Backes C. Site-Selective Oxidation of Monolayered Liquid-Exfoliated WS 2 by Shielding the Basal Plane through Adsorption of a Facial Amphiphile. Angew Chem Int Ed Engl 2020; 59:13785-13792. [PMID: 32449582 PMCID: PMC7496821 DOI: 10.1002/anie.202005730] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Indexed: 12/31/2022]
Abstract
In recent years, various functionalization strategies for transition‐metal dichalcogenides have been explored to tailor the properties of materials and to provide anchor points for the fabrication of hybrid structures. Herein, new insights into the role of the surfactant in functionalization reactions are described. Using the spontaneous reaction of WS2 with chloroauric acid as a model reaction, the regioselective formation of gold nanoparticles on WS2 is shown to be heavily dependent on the surfactant employed. A simple model is developed to explain the role of the chosen surfactant in this heterogeneous functionalization reaction. The surfactant coverage is identified as the crucial element that governs the dominant reaction pathway and therefore can severely alter the reaction outcome. This study shows the general importance of the surfactant choice and how detrimental or beneficial a certain surfactant can be to the desired functionalization.
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Affiliation(s)
- Sebastian Grieger
- Institute for Physical Chemistry, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 253, 69120, Heidelberg, Germany
| | - Beata M Szydłowska
- Institute for Physical Chemistry, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 253, 69120, Heidelberg, Germany.,Institute of Physics, EIT 2, Faculty of Electrical Engineering and Information Technology, Universität der Bundeswehr München, Werner-Heisenberg-Weg 39, 85577, Neubiberg, Germany
| | - Vaishnavi J Rao
- Institute for Physical Chemistry, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 253, 69120, Heidelberg, Germany
| | - Eva Steinmann
- Institute for Physical Chemistry, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 253, 69120, Heidelberg, Germany
| | - Marcus Dodds
- Institute for Physical Chemistry, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 253, 69120, Heidelberg, Germany
| | - Zahra Gholamvand
- School of Physics and CRANN & AMBER Research Centres, Trinity College Dublin, Dublin, 2, Ireland
| | - Georg S Duesberg
- Institute of Physics, EIT 2, Faculty of Electrical Engineering and Information Technology, Universität der Bundeswehr München, Werner-Heisenberg-Weg 39, 85577, Neubiberg, Germany
| | - Jana Zaumseil
- Institute for Physical Chemistry, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 253, 69120, Heidelberg, Germany.,Centre for Advanced Materials, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 225, 69120, Heidelberg, Germany
| | - Claudia Backes
- Institute for Physical Chemistry, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 253, 69120, Heidelberg, Germany
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14
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Grieger S, Szydłowska BM, Rao VJ, Steinmann E, Dodds M, Gholamvand Z, Duesberg GS, Zaumseil J, Backes C. Site‐Selective Oxidation of Monolayered Liquid‐Exfoliated WS
2
by Shielding the Basal Plane through Adsorption of a Facial Amphiphile. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005730] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Sebastian Grieger
- Institute for Physical Chemistry Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 253 69120 Heidelberg Germany
| | - Beata M. Szydłowska
- Institute for Physical Chemistry Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 253 69120 Heidelberg Germany
- Institute of Physics, EIT 2 Faculty of Electrical Engineering and Information Technology Universität der Bundeswehr München Werner-Heisenberg-Weg 39 85577 Neubiberg Germany
| | - Vaishnavi J. Rao
- Institute for Physical Chemistry Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 253 69120 Heidelberg Germany
| | - Eva Steinmann
- Institute for Physical Chemistry Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 253 69120 Heidelberg Germany
| | - Marcus Dodds
- Institute for Physical Chemistry Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 253 69120 Heidelberg Germany
| | - Zahra Gholamvand
- School of Physics and CRANN & AMBER Research Centres Trinity College Dublin Dublin 2 Ireland
| | - Georg S. Duesberg
- Institute of Physics, EIT 2 Faculty of Electrical Engineering and Information Technology Universität der Bundeswehr München Werner-Heisenberg-Weg 39 85577 Neubiberg Germany
| | - Jana Zaumseil
- Institute for Physical Chemistry Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 253 69120 Heidelberg Germany
- Centre for Advanced Materials Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 225 69120 Heidelberg Germany
| | - Claudia Backes
- Institute for Physical Chemistry Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 253 69120 Heidelberg Germany
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15
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Quirós-Ovies R, Vázquez Sulleiro M, Vera-Hidalgo M, Prieto J, Gómez IJ, Sebastián V, Santamaría J, Pérez EM. Controlled Covalent Functionalization of 2 H-MoS 2 with Molecular or Polymeric Adlayers. Chemistry 2020; 26:6629-6634. [PMID: 32101348 DOI: 10.1002/chem.202000068] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 02/25/2020] [Indexed: 01/01/2023]
Abstract
Most air-stable 2D materials are relatively inert, which makes their chemical modification difficult. In particular, in the case of MoS2 , the semiconducting 2 H-MoS2 is much less reactive than its metallic counterpart, 1T-MoS2 . As a consequence, there are hardly any reliable methods for the covalent modification of 2 H-MoS2 . An ideal method for the chemical functionalization of such materials should be both mild, not requiring the introduction of a large number of defects, and versatile, allowing for the decoration with as many different functional groups as possible. Herein, a comprehensive study on the covalent functionalization of 2 H-MoS2 with maleimides is presented. The use of a base (Et3 N) leads to the in situ formation of a succinimide polymer layer, covalently connected to MoS2 . In contrast, in the absence of base, functionalization stops at the molecular level. Moreover, the functionalization protocol is mild (occurs at room temperature), fast (nearly complete in 1 h), and very flexible (11 different solvents and 10 different maleimides tested). In practical terms, the procedures described here allow for the chemist to manipulate 2 H-MoS2 in a very flexible way, decorating it with polymers or molecules, and with a wide range of functional groups for subsequent modification. Conceptually, the spurious formation of an organic polymer might be general to other methods of functionalization of 2D materials, where a large excess of molecular reagents is typically used.
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Affiliation(s)
- Ramiro Quirós-Ovies
- IMDEA Nanociencia, Ciudad Universitaria de Cantoblanco, C/Faraday 9, 28049, Madrid, Spain
| | | | - Mariano Vera-Hidalgo
- IMDEA Nanociencia, Ciudad Universitaria de Cantoblanco, C/Faraday 9, 28049, Madrid, Spain
| | - Javier Prieto
- IMDEA Nanociencia, Ciudad Universitaria de Cantoblanco, C/Faraday 9, 28049, Madrid, Spain
| | - I Jénnifer Gómez
- CEITEC Masaryk University, Kamenice 5, 62500, Brno, Czech Republic
| | - Víctor Sebastián
- Department of Chemical and Environmental Engineering, Institute of Nanoscience of Aragon (INA), Campus Rio Ebro, 50018, Zaragoza, Spain.,Instituto de Ciencia de Materiales de Aragon (ICMA), Consejo Superior de Investigaciones Científicas, (CSIC-Universidad de Zaragoza), 50018, Zaragoza, Spain.,Networking Research Center on Bioengineering, Biomaterials, and Nanomedicine (CIBER-BBN), 28029, Madrid, Spain
| | - Jesús Santamaría
- Department of Chemical and Environmental Engineering, Institute of Nanoscience of Aragon (INA), Campus Rio Ebro, 50018, Zaragoza, Spain.,Instituto de Ciencia de Materiales de Aragon (ICMA), Consejo Superior de Investigaciones Científicas, (CSIC-Universidad de Zaragoza), 50018, Zaragoza, Spain.,Networking Research Center on Bioengineering, Biomaterials, and Nanomedicine (CIBER-BBN), 28029, Madrid, Spain
| | - Emilio M Pérez
- IMDEA Nanociencia, Ciudad Universitaria de Cantoblanco, C/Faraday 9, 28049, Madrid, Spain
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16
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Canton‐Vitoria R, Scharl T, Stergiou A, Cadranel A, Arenal R, Guldi DM, Tagmatarchis N. Ping-Pong Energy Transfer in Covalently Linked Porphyrin-MoS 2 Architectures. Angew Chem Int Ed Engl 2020; 59:3976-3981. [PMID: 31825548 PMCID: PMC7154652 DOI: 10.1002/anie.201914494] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Indexed: 11/25/2022]
Abstract
Molybdenum disulfide nanosheets covalently modified with porphyrin were prepared and fully characterized. Neither the porphyrin absorption nor its fluorescence was notably affected by covalent linkage to MoS2 . The use of transient absorption spectroscopy showed that a complex ping-pong energy-transfer mechanism, namely from the porphyrin to MoS2 and back to the porphyrin, operated. This study reveals the potential of transition-metal dichalcogenides in photosensitization processes.
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Affiliation(s)
- Ruben Canton‐Vitoria
- Theoretical and Physical Chemistry InstituteNational Hellenic Research Foundation48 Vassileos Constantinou Avenue11635AthensGreece
| | - Tobias Scharl
- Department of Chemistry and Pharmacy & interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander Universität Erlangen-NürnbergEgerlandstrasse 391058ErlangenGermany
| | - Anastasios Stergiou
- Theoretical and Physical Chemistry InstituteNational Hellenic Research Foundation48 Vassileos Constantinou Avenue11635AthensGreece
| | - Alejandro Cadranel
- Department of Chemistry and Pharmacy & interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander Universität Erlangen-NürnbergEgerlandstrasse 391058ErlangenGermany
- Universidad de Buenos AiresFacultad de Ciencias Exactas y NaturalesDepartamento de Química InorgánicaAnalítica y Química FísicaPabellón 2, Ciudad UniversitariaC1428EHABuenos AiresArgentina
- CONICET—Universidad de Buenos AiresInstituto de Química-Física de MaterialesMedio Ambiente y Energía (INQUIMAE)Pabellón 2, Ciudad UniversitariaC1428EHABuenos AiresArgentina
| | - Raul Arenal
- Laboratorio de Microscopias Avanzadas (LMA)Instituto de Nanociencia de Aragon (INA)U. ZaragozaMariano Esquillor s/n50018ZaragozaSpain
- Instituto de Ciencias de Materiales de AragonCSIC-U. de ZaragozaCalle Pedro Cerbuna 1250009ZaragozaSpain
- ARAID Foundation50018ZaragozaSpain
| | - Dirk M. Guldi
- Department of Chemistry and Pharmacy & interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander Universität Erlangen-NürnbergEgerlandstrasse 391058ErlangenGermany
| | - Nikos Tagmatarchis
- Theoretical and Physical Chemistry InstituteNational Hellenic Research Foundation48 Vassileos Constantinou Avenue11635AthensGreece
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17
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Canton‐Vitoria R, Scharl T, Stergiou A, Cadranel A, Arenal R, Guldi DM, Tagmatarchis N. Pingpong‐Energietransfer in kovalent verknüpften Porphyrin‐MoS
2
‐Architekturen. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914494] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ruben Canton‐Vitoria
- Theoretical and Physical Chemistry Institute National Hellenic Research Foundation 48 Vassileos Constantinou Avenue 11635 Athens Griechenland
| | - Tobias Scharl
- Department of Chemistry and Pharmacy & interdisciplinary Center for Molecular Materials (ICMM) Friedrich-Alexander Universität Erlangen-Nürnberg Egerlandstr. 3 91058 Erlangen Deutschland
| | - Anastasios Stergiou
- Theoretical and Physical Chemistry Institute National Hellenic Research Foundation 48 Vassileos Constantinou Avenue 11635 Athens Griechenland
| | - Alejandro Cadranel
- Department of Chemistry and Pharmacy & interdisciplinary Center for Molecular Materials (ICMM) Friedrich-Alexander Universität Erlangen-Nürnberg Egerlandstr. 3 91058 Erlangen Deutschland
- Universidad de Buenos Aires Facultad de Ciencias Exactas y Naturales Departamento de Química Inorgánica Analítica y Química Física Pabellón 2, Ciudad Universitaria C1428EHA Buenos Aires Argentinien
- CONICET – Universidad de Buenos Aires Instituto de Química-Física de Materiales Medio Ambiente y Energía (INQUIMAE) Pabellón 2, Ciudad Universitaria C1428EHA Buenos Aires Argentinien
| | - Raul Arenal
- Laboratorio de Microscopias Avanzadas (LMA) Instituto de Nanociencia de Aragon (INA) U. Zaragoza Mariano Esquillor s/n 50018 Zaragoza Spanien
- Instituto de Ciencias de Materiales de Aragon CSIC-U. de Zaragoza Calle Pedro Cerbuna 12 50009 Zaragoza Spanien
- ARAID Foundation 50018 Zaragoza Spanien
| | - Dirk M. Guldi
- Department of Chemistry and Pharmacy & interdisciplinary Center for Molecular Materials (ICMM) Friedrich-Alexander Universität Erlangen-Nürnberg Egerlandstr. 3 91058 Erlangen Deutschland
| | - Nikos Tagmatarchis
- Theoretical and Physical Chemistry Institute National Hellenic Research Foundation 48 Vassileos Constantinou Avenue 11635 Athens Griechenland
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18
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Kagkoura A, Hernandez‐Ferrer J, Benito AM, Maser WK, Tagmatarchis N. In‐Situ Growth and Immobilization of CdS Nanoparticles onto Functionalized MoS
2
: Preparation, Characterization and Fabrication of Photoelectrochemical Cells. Chem Asian J 2019; 15:2350-2356. [DOI: 10.1002/asia.201901371] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 11/15/2019] [Indexed: 12/23/2022]
Affiliation(s)
- Antonia Kagkoura
- Theoretical and Physical Chemistry InstituteNational Hellenic Research Foundation 48 Vassileos Constantinou Avenue Athens 11635 Greece
| | | | - Ana M. Benito
- Instituto de Carboquimica (ICB-CSIC) C/Miguel Luesma Castan 4 50018 Zaragoza Spain
| | - Wolfgang K. Maser
- Instituto de Carboquimica (ICB-CSIC) C/Miguel Luesma Castan 4 50018 Zaragoza Spain
| | - Nikos Tagmatarchis
- Theoretical and Physical Chemistry InstituteNational Hellenic Research Foundation 48 Vassileos Constantinou Avenue Athens 11635 Greece
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19
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Kafle TR, Kattel B, Yao P, Zereshki P, Zhao H, Chan WL. Effect of the Interfacial Energy Landscape on Photoinduced Charge Generation at the ZnPc/MoS 2 Interface. J Am Chem Soc 2019; 141:11328-11336. [PMID: 31259543 DOI: 10.1021/jacs.9b05893] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Monolayer transition-metal dichalcogenide crystals (TMDC) can be combined with other functional materials, such as organic molecules, to form a wide range of heterostructures with tailorable properties. Although a number of works have shown that ultrafast charge transfer (CT) can occur at organic/TMDC interfaces, conditions that would facilitate the separation of interfacial CT excitons into free carriers remain unclear. Here, time-resolved and steady-state photoemission spectroscopy are used to study the potential energy landscape, charge transfer, and exciton dynamics at the zinc phthalocyanine (ZnPc)/monolayer (ML) MoS2 and ZnPc/bulk MoS2 interfaces. Surprisingly, although both interfaces have a type-II band alignment and exhibit sub-100 fs CT, the CT excitons formed at the two interfaces show drastically different evolution dynamics. The ZnPc/ML-MoS2 behaves like typical donor-acceptor interfaces in which CT excitons dissociate into electron-hole pairs. On the contrary, back electron transfer occur at ZnPc/bulk-MoS2, which results in the formation of triplet excitons in ZnPc. The difference can be explained by the different amount of band bending found in the ZnPc film deposited on ML-MoS2 and bulk-MoS2. Our work illustrates that the potential energy landscape near the interface plays an important role in the charge separation behavior. Therefore, considering the energy level alignment at the interface alone is not enough for predicting whether free charges can be generated effectively from an interface.
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Affiliation(s)
- Tika R Kafle
- Department of Physics and Astronomy , University of Kansas , Lawrence , Kansas 66045 , United States
| | - Bhupal Kattel
- Department of Physics and Astronomy , University of Kansas , Lawrence , Kansas 66045 , United States
| | - Peng Yao
- Department of Physics and Astronomy , University of Kansas , Lawrence , Kansas 66045 , United States.,Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology , Beijing Jiaotong University , Beijing 100044 , China
| | - Peymon Zereshki
- Department of Physics and Astronomy , University of Kansas , Lawrence , Kansas 66045 , United States
| | - Hui Zhao
- Department of Physics and Astronomy , University of Kansas , Lawrence , Kansas 66045 , United States
| | - Wai-Lun Chan
- Department of Physics and Astronomy , University of Kansas , Lawrence , Kansas 66045 , United States
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