1
|
Li Y, Kim M, Pial TH, Lin Y, Cui H, Olvera de la Cruz M. Aggregation-Induced Asymmetric Charge States of Amino Acids in Supramolecular Nanofibers. J Phys Chem B 2023; 127:8176-8184. [PMID: 37721979 DOI: 10.1021/acs.jpcb.3c05598] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/20/2023]
Abstract
Electrostatic interactions contribute critically to the kinetic pathways and thermodynamic outcomes of peptide self-assembly involving one or more than one charged amino acids. While it is well understood in protein folding that those amino acids with acidic/basic side chains could shift their pKas when placed in a hydrophobic microenvironment, to what extent aggregation of monomeric peptide units from the bulk solution could alter their charged status and how this change in pKa values would reciprocally impact their assembly outcomes. Here, we design and analyze two solution systems containing peptide amphiphiles with hydrocarbon chains of different lengths to determine the factor of deprotonation on assembly. Our results suggest that models of supramolecular nanofibers with uniformly distributed, fully charged amino acids are oversimplified. We demonstrate, with molecular dynamics simulations, and validate with experimental results that asymmetric, different protonation states of the peptides lead to distinct nanostructures after self-assembly. The results give estimates on the electrostatic interactions in peptide amphiphiles required for their self-assembly and shed light on modeling molecular assembly systems containing charged amino acids.
Collapse
Affiliation(s)
- Y Li
- Department of Chemical and Biomolecular Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Center of Computation and Theory of Soft Materials, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - M Kim
- Department of Chemical and Biomolecular Engineering and Institute for NanoBiotechnology, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - T H Pial
- Center of Computation and Theory of Soft Materials, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois 60208, United States
| | - Y Lin
- Center of Computation and Theory of Soft Materials, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - H Cui
- Department of Chemical and Biomolecular Engineering and Institute for NanoBiotechnology, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
- Department of Oncology and Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
| | - M Olvera de la Cruz
- Department of Chemical and Biomolecular Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Center of Computation and Theory of Soft Materials, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois 60208, United States
- Department of Physics and Astronomy, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| |
Collapse
|
2
|
Zhu D, Xie J, Yan J, He G, Qiao M. Ultrafast Laser Plasmonic Fabrication of Nanocrystals by Molecule Modulation for Photoresponse Multifunctional Structures. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2211983. [PMID: 36988623 DOI: 10.1002/adma.202211983] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 03/13/2023] [Indexed: 06/19/2023]
Abstract
Nanotechnology has attracted wide research attention in constructing functional devices, including integrated circuits, transparent electrodes, and flexible actuators. Bottom-up fabrication is an important approach for functional structure manufacture, however, the controllable fabrication of complex architectures for practical applications has long been a challenge. Here, a novel strategy of laser plasmonic fabrication based on glue molecule modulation is proposed that can assemble metal nanocrystals into interconnected pattern networks. The plasmonic response of nanocrystals is adjustable with molecule modulation, which is a benefit for the effective formation of laser-induced localized oscillating electrons. The further decomposition of molecules and the movement of nanocrystal surface atoms can achieve the coalescence of assembled nanocrystals. It demonstrates that complex architectures can be controllably constructed by molecule level modulation. Through molecule-assisted laser plasmonic fabrication, the functional nanocrystals with enhanced photothermal capacity can be used for information encryption and soft machinery. This work expands the knowledge of bottom-up fabrication and provides a method for designing functional nanocrystals for a wide range of applications.
Collapse
Affiliation(s)
- Dezhi Zhu
- State Key Laboratory of Tribology in Advanced Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China
| | - Jiawang Xie
- State Key Laboratory of Tribology in Advanced Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China
| | - Jianfeng Yan
- State Key Laboratory of Tribology in Advanced Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China
| | - Guangzhi He
- State Key Laboratory of Tribology in Advanced Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China
| | - Ming Qiao
- State Key Laboratory of Tribology in Advanced Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China
| |
Collapse
|
3
|
Liu Y, Calcabrini M, Yu Y, Lee S, Chang C, David J, Ghosh T, Spadaro MC, Xie C, Cojocaru-Mirédin O, Arbiol J, Ibáñez M. Defect Engineering in Solution-Processed Polycrystalline SnSe Leads to High Thermoelectric Performance. ACS NANO 2022; 16:78-88. [PMID: 34549956 PMCID: PMC8793148 DOI: 10.1021/acsnano.1c06720] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
SnSe has emerged as one of the most promising materials for thermoelectric energy conversion due to its extraordinary performance in its single-crystal form and its low-cost constituent elements. However, to achieve an economic impact, the polycrystalline counterpart needs to replicate the performance of the single crystal. Herein, we optimize the thermoelectric performance of polycrystalline SnSe produced by consolidating solution-processed and surface-engineered SnSe particles. In particular, the SnSe particles are coated with CdSe molecular complexes that crystallize during the sintering process, forming CdSe nanoparticles. The presence of CdSe nanoparticles inhibits SnSe grain growth during the consolidation step due to Zener pinning, yielding a material with a high density of grain boundaries. Moreover, the resulting SnSe-CdSe nanocomposites present a large number of defects at different length scales, which significantly reduce the thermal conductivity. The produced SnSe-CdSe nanocomposites exhibit thermoelectric figures of merit up to 2.2 at 786 K, which is among the highest reported for solution-processed SnSe.
Collapse
Affiliation(s)
- Yu Liu
- IST
Austria, Am Campus 1, 3400 Klosterneuburg, Austria
| | | | - Yuan Yu
- RWTH
Aachen, I. Physikalisches Institut (IA), Sommerfeldstraße 14, 52074 Aachen, Germany
| | - Seungho Lee
- IST
Austria, Am Campus 1, 3400 Klosterneuburg, Austria
| | - Cheng Chang
- IST
Austria, Am Campus 1, 3400 Klosterneuburg, Austria
| | - Jérémy David
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Catalonia, Spain
| | - Tanmoy Ghosh
- IST
Austria, Am Campus 1, 3400 Klosterneuburg, Austria
| | - Maria Chiara Spadaro
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Catalonia, Spain
| | - Chenyang Xie
- Department
of Physics, INTE & Barcelona Multiscale Res. Center, Universitat Politècnica de Catalunya, Avda. Eduard Maristany 16, 08930 Barcelona, Catalunya, Spain
| | - Oana Cojocaru-Mirédin
- RWTH
Aachen, I. Physikalisches Institut (IA), Sommerfeldstraße 14, 52074 Aachen, Germany
| | - Jordi Arbiol
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Catalonia, Spain
- ICREA, Pg. Lluis Companys 23, 08010 Barcelona, Catalonia, Spain
| | - Maria Ibáñez
- IST
Austria, Am Campus 1, 3400 Klosterneuburg, Austria
| |
Collapse
|
4
|
Wang W, Zhang M, Pan Z, Biesold GM, Liang S, Rao H, Lin Z, Zhong X. Colloidal Inorganic Ligand-Capped Nanocrystals: Fundamentals, Status, and Insights into Advanced Functional Nanodevices. Chem Rev 2021; 122:4091-4162. [PMID: 34968050 DOI: 10.1021/acs.chemrev.1c00478] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Colloidal nanocrystals (NCs) are intriguing building blocks for assembling various functional thin films and devices. The electronic, optoelectronic, and thermoelectric applications of solution-processed, inorganic ligand (IL)-capped colloidal NCs are especially promising as the performance of related devices can substantially outperform their organic ligand-capped counterparts. This in turn highlights the significance of preparing IL-capped NC dispersions. The replacement of initial bulky and insulating ligands capped on NCs with short and conductive inorganic ones is a critical step in solution-phase ligand exchange for preparing IL-capped NCs. Solution-phase ligand exchange is extremely appealing due to the highly concentrated NC inks with completed ligand exchange and homogeneous ligand coverage on the NC surface. In this review, the state-of-the-art of IL-capped NCs derived from solution-phase inorganic ligand exchange (SPILE) reactions are comprehensively reviewed. First, a general overview of the development and recent advancements of the synthesis of IL-capped colloidal NCs, mechanisms of SPILE, elementary reaction principles, surface chemistry, and advanced characterizations is provided. Second, a series of important factors in the SPILE process are offered, followed by an illustration of how properties of NC dispersions evolve after ILE. Third, surface modifications of perovskite NCs with use of inorganic reagents are overviewed. They are necessary because perovskite NCs cannot withstand polar solvents or undergo SPILE due to their soft ionic nature. Fourth, an overview of the research progresses in utilizing IL-capped NCs for a wide range of applications is presented, including NC synthesis, NC solid and film fabrication techniques, field effect transistors, photodetectors, photovoltaic devices, thermoelectric, and photoelectrocatalytic materials. Finally, the review concludes by outlining the remaining challenges in this field and proposing promising directions to further promote the development of IL-capped NCs in practical application in the future.
Collapse
Affiliation(s)
- Wenran Wang
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, 483 Wushan Road, Guangzhou 510642, China.,School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States.,Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Meng Zhang
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Zhenxiao Pan
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, 483 Wushan Road, Guangzhou 510642, China.,Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Gill M Biesold
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Shuang Liang
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Huashang Rao
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, 483 Wushan Road, Guangzhou 510642, China.,Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Zhiqun Lin
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Xinhua Zhong
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, 483 Wushan Road, Guangzhou 510642, China.,Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| |
Collapse
|
5
|
Koskela KM, Strumolo MJ, Brutchey RL. Progress of thiol-amine ‘alkahest’ solutions for thin film deposition. TRENDS IN CHEMISTRY 2021. [DOI: 10.1016/j.trechm.2021.09.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
6
|
Mule AS, Mazzotti S, Rossinelli AA, Aellen M, Prins PT, van der Bok JC, Solari SF, Glauser YM, Kumar PV, Riedinger A, Norris DJ. Unraveling the Growth Mechanism of Magic-Sized Semiconductor Nanocrystals. J Am Chem Soc 2021; 143:2037-2048. [DOI: 10.1021/jacs.0c12185] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Aniket S. Mule
- Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland
| | - Sergio Mazzotti
- Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland
| | - Aurelio A. Rossinelli
- Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland
| | - Marianne Aellen
- Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland
| | - P. Tim Prins
- Condensed Matter and Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, 3508 TA Utrecht, The Netherlands
| | - Johanna C. van der Bok
- Condensed Matter and Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, 3508 TA Utrecht, The Netherlands
| | - Simon F. Solari
- Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland
| | - Yannik M. Glauser
- Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland
| | - Priyank V. Kumar
- Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland
| | - Andreas Riedinger
- Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland
- Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - David J. Norris
- Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland
| |
Collapse
|
7
|
Krieger A, Wagner M, Haschke S, Kröckel C, Bachmann J, Hauke F, Hirsch A, Gröhn F. Self-assembled hybrid organic-MoS 3-nanoparticle catalyst for light energy conversion. NANOSCALE 2020; 12:22952-22957. [PMID: 33196715 DOI: 10.1039/d0nr04820h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We present photocatalytically active, stable polymer-amorphous-MoS3-nanoparticle hybrid structures in aqueous solution. Below 10 nm MoS3 particles in the polymer exhibit an up to 7.5-fold increased photocatalytic activity compared to the neat nanoparticles without any additional photosensitizer. Supramolecular interactions are key in directing the structure formation of the hybrid assembly. The hybrid structures bear potential as novel affordable photocatalysts for solar energy conversion.
Collapse
Affiliation(s)
- A Krieger
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM) and Bavarian Polymer Institute, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstr. 3, 91058 Erlangen, Germany.
| | | | | | | | | | | | | | | |
Collapse
|
8
|
Ibáñez M, Hasler R, Genç A, Liu Y, Kuster B, Schuster M, Dobrozhan O, Cadavid D, Arbiol J, Cabot A, Kovalenko MV. Ligand-Mediated Band Engineering in Bottom-Up Assembled SnTe Nanocomposites for Thermoelectric Energy Conversion. J Am Chem Soc 2019; 141:8025-8029. [PMID: 31017419 PMCID: PMC6588270 DOI: 10.1021/jacs.9b01394] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
![]()
The bottom-up assembly
of colloidal nanocrystals is a versatile
methodology to produce composite nanomaterials with precisely tuned
electronic properties. Beyond the synthetic control over crystal domain
size, shape, crystal phase, and composition, solution-processed nanocrystals
allow exquisite surface engineering. This provides additional means
to modulate the nanomaterial characteristics and particularly its
electronic transport properties. For instance, inorganic surface ligands
can be used to tune the type and concentration of majority carriers
or to modify the electronic band structure. Herein, we report the
thermoelectric properties of SnTe nanocomposites obtained from the
consolidation of surface-engineered SnTe nanocrystals into macroscopic
pellets. A CdSe-based ligand is selected to (i) converge the light
and heavy bands through partial Cd alloying and (ii) generate CdSe
nanoinclusions as a secondary phase within the SnTe matrix, thereby
reducing the thermal conductivity. These SnTe-CdSe nanocomposites
possess thermoelectric figures of merit of up to 1.3 at 850 K, which
is, to the best of our knowledge, the highest thermoelectric figure
of merit reported for solution-processed SnTe.
Collapse
Affiliation(s)
- Maria Ibáñez
- Institute of Science and Technology Austria , Am Campus 1 , 3400 Klosterneuburg , Austria.,Institute of Inorganic Chemistry, Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir Prelog Weg 1 , Zürich CH-8093 , Switzerland.,Empa-Swiss Federal Laboratories for Materials Science and Technology , , Überlandstrasse 129 , Dübendorf CH-8600 , Switzerland
| | - Roger Hasler
- Institute of Inorganic Chemistry, Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir Prelog Weg 1 , Zürich CH-8093 , Switzerland.,Empa-Swiss Federal Laboratories for Materials Science and Technology , , Überlandstrasse 129 , Dübendorf CH-8600 , Switzerland
| | - Aziz Genç
- Department of Metallurgy and Materials Engineering, Faculty of Engineering , Bartin University , 74100 Bartin , Turkey.,Catalan Institute of Nanoscience and Nanotechnology (ICN2) , CSIC and BIST , Campus UAB, Bellaterra , 08193 Barcelona , Catalonia, Spain
| | - Yu Liu
- Institute of Science and Technology Austria , Am Campus 1 , 3400 Klosterneuburg , Austria.,Catalonia Energy Research Institute-IREC , Sant Adrià del Besòs , 08930 Barcelona , Spain
| | - Beatrice Kuster
- Institute of Inorganic Chemistry, Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir Prelog Weg 1 , Zürich CH-8093 , Switzerland.,Empa-Swiss Federal Laboratories for Materials Science and Technology , , Überlandstrasse 129 , Dübendorf CH-8600 , Switzerland
| | - Maximilian Schuster
- Institute of Inorganic Chemistry, Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir Prelog Weg 1 , Zürich CH-8093 , Switzerland
| | - Oleksandr Dobrozhan
- Catalonia Energy Research Institute-IREC , Sant Adrià del Besòs , 08930 Barcelona , Spain
| | - Doris Cadavid
- Catalonia Energy Research Institute-IREC , Sant Adrià del Besòs , 08930 Barcelona , Spain
| | - Jordi Arbiol
- Catalan Institute of Nanoscience and Nanotechnology (ICN2) , CSIC and BIST , Campus UAB, Bellaterra , 08193 Barcelona , Catalonia, Spain.,ICREA , Pg. Lluís Companys 23 , 08010 Barcelona , Spain
| | - Andreu Cabot
- Catalonia Energy Research Institute-IREC , Sant Adrià del Besòs , 08930 Barcelona , Spain.,ICREA , Pg. Lluís Companys 23 , 08010 Barcelona , Spain
| | - Maksym V Kovalenko
- Institute of Inorganic Chemistry, Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir Prelog Weg 1 , Zürich CH-8093 , Switzerland.,Empa-Swiss Federal Laboratories for Materials Science and Technology , , Überlandstrasse 129 , Dübendorf CH-8600 , Switzerland
| |
Collapse
|
9
|
Gao Y, Yin P. Effect of Bond Dispersion on Raman Spectra Shift in II-VI Semiconductor Nanocrystals. Inorg Chem 2019; 58:4859-4868. [PMID: 30931557 DOI: 10.1021/acs.inorgchem.8b03359] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
To understand Raman spectra shifts of nanocrystals, the top-down phonon confinement approach and the bottom-up quantum chemical approach were developed. The former is suitable for large-sized nanocrystals, and the latter is suitable for clusters containing fewer atoms. Here, we find that a simpler chemical bond model based on the bond dispersion feature can demonstrate Raman spectra shift either in normal size II-VI semiconductor nanocrystals or in atomically precise clusters. According to the bond dispersion model, the Raman spectral line of the II-VI semiconductor nanocrystal (AIIBVI) is expressed as the sum of the Lorentz subpeaks of the AII( i)BVI( j) bonds with different coordinates i and j. The calculated Raman lines of CdSe, CdS, CdTe, ZnS, and ZnSe nanocrystals are in agreement with the measured Raman spectral lines. The origin of the red shift and asymmetric broadening of the peak position of nanocrystals may be revealed as well. Results provide insight into how different bonds contribute to different vibrational spectra.
Collapse
Affiliation(s)
- Yukun Gao
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry , Beihang University , Beijing 100191 , China
| | - Penggang Yin
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry , Beihang University , Beijing 100191 , China
| |
Collapse
|
10
|
Jeong YJ, Yun DJ, Noh SH, Park CE, Jang J. Surface Modification of CdSe Quantum-Dot Floating Gates for Advancing Light-Erasable Organic Field-Effect Transistor Memories. ACS NANO 2018; 12:7701-7709. [PMID: 30024727 DOI: 10.1021/acsnano.8b01413] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Photoresponsive transistor memories that can be erased using light-only bias are of significant interest owing to their convenient elimination of stored data for information delivery. Herein, we suggest a strategy to improve light-erasable organic transistor memories, which enables fast "photoinduced recovery" under low-intensity light. CdSe quantum dots (QDs) whose surfaces are covered with three different organic molecules are introduced as photoactive floating-gate interlayers in organic transistor memories. We determine that CdSe QDs capped or surface-modified with small molecular ligands lead to efficient hole diffusion from the QDs to the conducting channel during "photoinduced recovery", resulting in faster erasing times. In particular, the memories with QDs surface-modified with fluorinated molecules function as normally-ON type transistor memories with nondestructive operation. These memories exhibit high memory ratios over 105 between OFF and ON bistable current states for over 10 000 s and good dynamic switching behavior with voltage-driven programming processes and light-assisted erasing processes within 1 s. Our study provides a useful guideline for designing photoactive floating-gate materials to achieve desirable properties of light-erasable organic transistor memories.
Collapse
Affiliation(s)
- Yong Jin Jeong
- The Research Institute of Industrial Science , Hanyang University , Seoul 04763 , Republic of Korea
- Polymer Research Institute, Department of Chemical Engineering , Pohang University of Science and Technology , Pohang 37673 , Republic of Korea
- Department of Energy Engineering , Hanyang University , Seoul 04763 , Republic of Korea
| | - Dong-Jin Yun
- Analytical Science Laboratory of Samsung Advanced Institute of Technology , SAIT, Suwon 16678 , Republic of Korea
| | - Sung Hoon Noh
- Department of Energy Engineering , Hanyang University , Seoul 04763 , Republic of Korea
| | - Chan Eon Park
- Polymer Research Institute, Department of Chemical Engineering , Pohang University of Science and Technology , Pohang 37673 , Republic of Korea
| | - Jaeyoung Jang
- Department of Energy Engineering , Hanyang University , Seoul 04763 , Republic of Korea
| |
Collapse
|
11
|
Huang L, Wan X, Rong H, Yao Y, Xu M, Liu J, Ji M, Liu J, Jiang L, Zhang J. Colloid-Interface-Assisted Laser Irradiation of Nanocrystals Superlattices to be Scalable Plasmonic Superstructures with Novel Activities. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1703501. [PMID: 29430863 DOI: 10.1002/smll.201703501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2017] [Revised: 01/06/2018] [Indexed: 06/08/2023]
Abstract
High-efficient charge and energy transfer between nanocrystals (NCs) in a bottom-up assembly are hard to achieve, resulting in an obstacle in application. Instead of the ligands exchange strategies, the advantage of a continuous laser is taken with optimal wavelength and power to irradiate the film-scale NCs superlattices at solid-liquid interfaces. Owing to the Au-based NCs' surface plasmon resonance (SPR) effect, the gentle laser irradiation leads the Au NCs or Au@CdS core/shell NCs to attach each other with controlled pattern at the interfaces between solid NCs phase and liquid ethanol/ethylene glycol. A continuous wave 532 nm laser (6.68-13.37 W cm-2 ), to control Au-based superlattices, is used to form the monolayer with uniformly reduced interparticle distance followed by welded superstructures. Considering the size effect to Au NCs' melting, when decreasing the Au NCs size to ≈5 nm, stronger welding nanostructures are obtained with diverse unprecedented shapes which cannot be achieved by normal colloidal synthesis. With the help of facile scale-up and formation at solid-liquid interfaces, and a good connection of crystalline between NCs, the obtained plasmonic superstructured films that could be facilely transferred onto different substrates exhibit broad SPR absorption in the visible and near-infrared regime, enhanced electric conductivities, and wide applications as surface enhanced Raman scattering (SERS)-active substrates.
Collapse
Affiliation(s)
- Liu Huang
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Xiaodong Wan
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Hongpan Rong
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Yuan Yao
- Institute of Physics, Chinese Academy of Science, Beijing, 100190, China
| | - Meng Xu
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Jia Liu
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Muwei Ji
- Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, China
| | - Jiajia Liu
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Lan Jiang
- School of Mechanical Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Jiatao Zhang
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
| |
Collapse
|
12
|
Wurmbrand D, Fischer JWA, Rosenberg R, Boldt K. Morphogenesis of anisotropic nanoparticles: self-templating via non-classical, fibrillar Cd2Se intermediates. Chem Commun (Camb) 2018; 54:7358-7361. [DOI: 10.1039/c8cc02058b] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Semiconductor nanorods nucleate via a fibrillar intermediate that is able to template its own preferential growth direction.
Collapse
Affiliation(s)
- Daniel Wurmbrand
- University of Konstanz
- Department of Chemistry
- 78457 Konstanz
- Germany
| | | | - Rose Rosenberg
- University of Konstanz
- Department of Chemistry
- 78457 Konstanz
- Germany
| | - Klaus Boldt
- University of Konstanz
- Department of Chemistry
- 78457 Konstanz
- Germany
| |
Collapse
|