1
|
Zhang S, Xin Y, Sun Y, Xi Z, Wei G, Han M, Liang B, Ou P, Xu K, Qiu J, Huang Z. Particle size effect on surface/interfacial tension and Tolman length of nanomaterials: A simple experimental method combining with theoretical. J Chem Phys 2024; 160:194708. [PMID: 38757618 DOI: 10.1063/5.0204848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Accepted: 04/23/2024] [Indexed: 05/18/2024] Open
Abstract
Surface tension and interfacial tension are crucial to the study of nanomaterials. Herein, we report a solubility method using magnesium oxide nanoparticles of different radii (1.8-105.0 nm, MgO NPs) dissolved in pure water as a targeted model; the surface tension and interfacial tension (and their temperature coefficients) were determined by measuring electrical conductivity and combined with the principle of the electrochemical equilibrium method, and the problem of particle size dependence is discussed. Encouragingly, this method can also be used to determine the ionic (atomic or molecular) radius and Tolman length of nanomaterials. This research results disclose that surface/interfacial tension and their temperature coefficients have a significant relationship with particle size. Surface/interfacial tension decreases rapidly with a radius <10 nm (while the temperature coefficients are opposite), while for a radius >10 nm, the effect is minimal. Especially, it is proven that the value of Tolman length is positive, the effect of particle size on Tolman length is consistent with the surface/interfacial tension, and the Tolman length of the bulk does not change much in the temperature range. This work initiates a new era for reliable determination of surface/interfacial tension, their temperature coefficients, ionic radius, and Tolman length of nanomaterials and provides an important theoretical basis for the development and application of various nanomaterials.
Collapse
Affiliation(s)
- Shengjiang Zhang
- School of Chemical Engineering, Xi'an Key Laboratory of Special Energy Materials, Northwest University, Xi'an 710069, People's Republic of China
- Department of Chemistry and Chemical Engineering, Guangxi Minzu University, Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Key Laboratory of Guangxi Colleges and Universities for Food Safety and Pharmaceutical Analytical Chemistry, Nanning 530006, People's Republic of China
| | - Yujia Xin
- School of Chemical Engineering, Xi'an Key Laboratory of Special Energy Materials, Northwest University, Xi'an 710069, People's Republic of China
| | - Yanan Sun
- School of Chemical Engineering, Xi'an Key Laboratory of Special Energy Materials, Northwest University, Xi'an 710069, People's Republic of China
| | - Ziheng Xi
- Department of Chemistry and Chemical Engineering, Guangxi Minzu University, Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Key Laboratory of Guangxi Colleges and Universities for Food Safety and Pharmaceutical Analytical Chemistry, Nanning 530006, People's Republic of China
| | - Gan Wei
- Department of Chemistry and Chemical Engineering, Guangxi Minzu University, Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Key Laboratory of Guangxi Colleges and Universities for Food Safety and Pharmaceutical Analytical Chemistry, Nanning 530006, People's Republic of China
| | - Meng Han
- Department of Chemistry and Chemical Engineering, Guangxi Minzu University, Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Key Laboratory of Guangxi Colleges and Universities for Food Safety and Pharmaceutical Analytical Chemistry, Nanning 530006, People's Republic of China
| | - Bing Liang
- Department of Chemistry and Chemical Engineering, Guangxi Minzu University, Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Key Laboratory of Guangxi Colleges and Universities for Food Safety and Pharmaceutical Analytical Chemistry, Nanning 530006, People's Republic of China
| | - Panpan Ou
- Wuzhou Product Quality Inspection Institute, Wuzhou 543002, People's Republic of China
| | - Kangzhen Xu
- School of Chemical Engineering, Xi'an Key Laboratory of Special Energy Materials, Northwest University, Xi'an 710069, People's Republic of China
| | - Jiangyuan Qiu
- Department of Chemistry and Chemical Engineering, Guangxi Minzu University, Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Key Laboratory of Guangxi Colleges and Universities for Food Safety and Pharmaceutical Analytical Chemistry, Nanning 530006, People's Republic of China
| | - Zaiyin Huang
- Department of Chemistry and Chemical Engineering, Guangxi Minzu University, Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Key Laboratory of Guangxi Colleges and Universities for Food Safety and Pharmaceutical Analytical Chemistry, Nanning 530006, People's Republic of China
| |
Collapse
|
2
|
Bloom BP, Paltiel Y, Naaman R, Waldeck DH. Chiral Induced Spin Selectivity. Chem Rev 2024; 124:1950-1991. [PMID: 38364021 PMCID: PMC10906005 DOI: 10.1021/acs.chemrev.3c00661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 01/16/2024] [Accepted: 01/23/2024] [Indexed: 02/18/2024]
Abstract
Since the initial landmark study on the chiral induced spin selectivity (CISS) effect in 1999, considerable experimental and theoretical efforts have been made to understand the physical underpinnings and mechanistic features of this interesting phenomenon. As first formulated, the CISS effect refers to the innate ability of chiral materials to act as spin filters for electron transport; however, more recent experiments demonstrate that displacement currents arising from charge polarization of chiral molecules lead to spin polarization without the need for net charge flow. With its identification of a fundamental connection between chiral symmetry and electron spin in molecules and materials, CISS promises profound and ubiquitous implications for existing technologies and new approaches to answering age old questions, such as the homochiral nature of life. This review begins with a discussion of the different methods for measuring CISS and then provides a comprehensive overview of molecules and materials known to exhibit CISS-based phenomena before proceeding to identify structure-property relations and to delineate the leading theoretical models for the CISS effect. Next, it identifies some implications of CISS in physics, chemistry, and biology. The discussion ends with a critical assessment of the CISS field and some comments on its future outlook.
Collapse
Affiliation(s)
- Brian P. Bloom
- Department
of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Yossi Paltiel
- Applied
Physics Department and Center for Nano-Science and Nano-Technology, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
| | - Ron Naaman
- Department
of Chemical and Biological Physics, Weizmann
Institute, Rehovot 76100, Israel
| | - David H. Waldeck
- Department
of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| |
Collapse
|
3
|
Siebert R, Ammerpohl O, Rossini M, Herb D, Rau S, Plenio MB, Jelezko F, Ankerhold J. A quantum physics layer of epigenetics: a hypothesis deduced from charge transfer and chirality-induced spin selectivity of DNA. Clin Epigenetics 2023; 15:145. [PMID: 37684676 PMCID: PMC10492394 DOI: 10.1186/s13148-023-01560-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 08/28/2023] [Indexed: 09/10/2023] Open
Abstract
BACKGROUND Epigenetic mechanisms are informational cellular processes instructing normal and diseased phenotypes. They are associated with DNA but without altering the DNA sequence. Whereas chemical processes like DNA methylation or histone modifications are well-accepted epigenetic mechanisms, we herein propose the existence of an additional quantum physics layer of epigenetics. RESULTS We base our hypothesis on theoretical and experimental studies showing quantum phenomena to be active in double-stranded DNA, even under ambient conditions. These phenomena include coherent charge transfer along overlapping pi-orbitals of DNA bases and chirality-induced spin selectivity. Charge transfer via quantum tunneling mediated by overlapping orbitals results in charge delocalization along several neighboring bases, which can even be extended by classical (non-quantum) electron hopping. Such charge transfer is interrupted by flipping base(s) out of the double-strand e.g., by DNA modifying enzymes. Charge delocalization can directly alter DNA recognition by proteins or indirectly by DNA structural changes e.g., kinking. Regarding sequence dependency, charge localization, shown to favor guanines, could influence or even direct epigenetic changes, e.g., modification of cytosines in CpG dinucleotides. Chirality-induced spin selectivity filters electrons for their spin along DNA and, thus, is not only an indicator for quantum coherence but can potentially affect DNA binding properties. CONCLUSIONS Quantum effects in DNA are prone to triggering and manipulation by external means. By the hypothesis put forward here, we would like to foster research on "Quantum Epigenetics" at the interface of medicine, biology, biochemistry, and physics to investigate the potential epigenetic impact of quantum physical principles on (human) life.
Collapse
Affiliation(s)
- Reiner Siebert
- Institute of Human Genetics, Ulm University & Ulm University Medical Center, Albert-Einstein-Allee 11, 89081, Ulm, Germany.
- Center for Integrated Quantum Science and Technology (IQST) Ulm-Stuttgart, Ulm, Germany.
| | - Ole Ammerpohl
- Institute of Human Genetics, Ulm University & Ulm University Medical Center, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Mirko Rossini
- Center for Integrated Quantum Science and Technology (IQST) Ulm-Stuttgart, Ulm, Germany
- Institute for Complex Quantum Systems, Ulm University, 89069, Ulm, Germany
| | - Dennis Herb
- Institute for Complex Quantum Systems, Ulm University, 89069, Ulm, Germany
| | - Sven Rau
- Institute of Inorganic Chemistry I, Ulm University, 89081, Ulm, Germany
| | - Martin B Plenio
- Center for Integrated Quantum Science and Technology (IQST) Ulm-Stuttgart, Ulm, Germany
- Institute of Theoretical Physics, Ulm University, 89081, Ulm, Germany
| | - Fedor Jelezko
- Center for Integrated Quantum Science and Technology (IQST) Ulm-Stuttgart, Ulm, Germany
- Institute for Quantum Optics, Ulm University, 89081, Ulm, Germany
| | - Joachim Ankerhold
- Center for Integrated Quantum Science and Technology (IQST) Ulm-Stuttgart, Ulm, Germany
- Institute for Complex Quantum Systems, Ulm University, 89069, Ulm, Germany
| |
Collapse
|
4
|
Ha Nguyen TN, Paltiel Y, Baczewski LT, Tegenkamp C. Spin Polarization of Polyalanine Molecules in 2D and Dimer-Row Assemblies Adsorbed on Magnetic Substrates: The Role of Coupling, Chirality, and Coordination. ACS APPLIED MATERIALS & INTERFACES 2023; 15:17406-17412. [PMID: 36952617 DOI: 10.1021/acsami.3c01429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Propagation of electrons along helical molecules adsorbed on surfaces comes along with a robust spin polarization effect called chirality induced spin selectivity CISS. However, experiments on the molecular scale that allow a true correlation of spin effects with the molecular structure are quite rare. Here we have studied the structure of self-assembled chiral molecules and the electronic transmission and spin polarization of the current through the system by means of ambient scanning tunneling microscopy and spectroscopy in heterostructures of various α-helix polyalanine-based molecules (PA) adsorbed on Al2O3/Pt/Au/Co/Au substrates with perpendicular magnetic anisotropy. We have found a phase separation of the molecules into well-ordered enantiopure 2D hexagonal phases and quasi-1D heterochiral-dimer structures, which allows for the analysis of the spin polarization with almost atomic precision of PA in different phases. The spin polarization reaches up to 75% for chemisorbed molecules arranged in a hexagonal phase. On the contrary, for weakly coupled PA molecules without cysteine anchoring groups in a quasi-1D phase, a spin polarization of around 50% was found. Our results show that both the intermolecular interaction as well as the coupling to the substrate are important and point out that collective effects within the molecules and at the interfaces are required to achieve a high chiral induced spin selectivity.
Collapse
Affiliation(s)
- Thi Ngoc Ha Nguyen
- Solid Surface Analysis, Institute of Physics, Chemnitz University of Technology, Reichenhainer Strasse 70, Chemnitz 09126, Germany
| | - Yossi Paltiel
- Department of Applied Physics, Hebrew University of Jerusalem, Jerusalem 91905, Israel
- Center for Nanoscience and Nanotechnology, Hebrew University of Jerusalem, Jerusalem 91905, Israel
| | - Lech T Baczewski
- Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, Warszawa 02-668, Poland
| | - Christoph Tegenkamp
- Solid Surface Analysis, Institute of Physics, Chemnitz University of Technology, Reichenhainer Strasse 70, Chemnitz 09126, Germany
| |
Collapse
|
5
|
Naskar S, Mujica V, Herrmann C. Chiral-Induced Spin Selectivity and Non-equilibrium Spin Accumulation in Molecules and Interfaces: A First-Principles Study. J Phys Chem Lett 2023; 14:694-701. [PMID: 36638217 DOI: 10.1021/acs.jpclett.2c03747] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Electrons moving through chiral molecules are selected according to their spin orientation and the helicity of the molecule, an effect known as chiral-induced spin selectivity (CISS). The underlying physical mechanism is not yet completely understood. To help elucidate this mechanism, a non-equilibrium Green's function method, combined with a Landauer approach and density functional theory, is applied to carbon helices contacted by gold electrodes, resulting in spin polarization of transmitted electrons. Spin polarization is also observed in the non-equilibrium electronic structure of the junctions. While this spin polarization is small, its sign changes with the direction of the current and with the handedness of the molecule. While these calculations were performed with a pure exchange-correlation functional, previous studies suggest that computationally more expensive hybrid functionals may lead to considerably larger spin polarization in the electronic structure. Thus, non-equilibrium spin polarization could be a key component in understanding the CISS mechanism.
Collapse
Affiliation(s)
- Sumit Naskar
- Department of Chemistry, University of Hamburg, Harbor Building 610, Luruper Chaussee 149, 22761Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, University of Hamburg, Luruper Chaussee 149, 22761Hamburg, Germany
| | - Vladimiro Mujica
- School of Molecular Sciences, Arizona State University, Tempe, Arizona85287, United States
- Kimika Fakultatea, Euskal Herriko Unibertsitatea UPV/EHU and Donostia International Physics Center, Manuel de Lardizabal Pasealekua 3, 20018Donostia, Euskadi, Spain
| | - Carmen Herrmann
- Department of Chemistry, University of Hamburg, Harbor Building 610, Luruper Chaussee 149, 22761Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, University of Hamburg, Luruper Chaussee 149, 22761Hamburg, Germany
| |
Collapse
|
6
|
Vittmann C, Lim J, Tamascelli D, Huelga SF, Plenio MB. Spin-Dependent Momentum Conservation of Electron-Phonon Scattering in Chirality-Induced Spin Selectivity. J Phys Chem Lett 2023; 14:340-346. [PMID: 36625481 DOI: 10.1021/acs.jpclett.2c03224] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The elucidation of the mechanisms underpinning chirality-induced spin selectivity remains an outstanding scientific challenge. Here we consider the role of delocalized phonon modes in electron transport in chiral structures and demonstrate that spin selectivity can originate from spin-dependent energy and momentum conservation in electron-phonon scattering events. While this mechanism is robust to the specific nature of the vibrational modes, the degree of spin polarization depends on environmental factors, such as the specific temperature and phonon relaxation rates, as well as the presence of external driving fields. This parametric dependence is used to present experimentally testable predictions of our model.
Collapse
Affiliation(s)
- Clemens Vittmann
- Institut für Theoretische Physik und IQST, Universität Ulm, Albert-Einstein-Allee 11, D-89081Ulm, Germany
| | - James Lim
- Institut für Theoretische Physik und IQST, Universität Ulm, Albert-Einstein-Allee 11, D-89081Ulm, Germany
| | - Dario Tamascelli
- Institut für Theoretische Physik und IQST, Universität Ulm, Albert-Einstein-Allee 11, D-89081Ulm, Germany
- Dipartimento di Fisica "Aldo Pontremoli", Università degli Studi di Milano, Via Celoria 16, 20133Milano, Italy
| | - Susana F Huelga
- Institut für Theoretische Physik und IQST, Universität Ulm, Albert-Einstein-Allee 11, D-89081Ulm, Germany
| | - Martin B Plenio
- Institut für Theoretische Physik und IQST, Universität Ulm, Albert-Einstein-Allee 11, D-89081Ulm, Germany
| |
Collapse
|
7
|
Levy HM, Schneider A, Tiwari S, Zer H, Yochelis S, Goloubinoff P, Keren N, Paltiel Y. The effect of spin exchange interaction on protein structural stability. Phys Chem Chem Phys 2022; 24:29176-29185. [PMID: 36444947 DOI: 10.1039/d2cp03331c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Partially charged chiral molecules act as spin filters, with preference for electron transport toward one type of spin ("up" or "down"), depending on their handedness. This effect is named the chiral induced spin selectivity (CISS) effect. A consequence of this phenomenon is spin polarization concomitant with electric polarization in chiral molecules. These findings were shown by adsorbing chiral molecules on magnetic surfaces and investigating the spin-exchange interaction between the surface and the chiral molecule. This field of study was developed using artificial chiral molecules. Here we used such magnetic surfaces to explore the importance of the intrinsic chiral properties of proteins in determining their stability. First, proteins were adsorbed on paramagnetic and ferromagnetic nanoparticles in a solution, and subsequently urea was gradually added to induce unfolding. The structural stability of proteins was assessed using two methods: bioluminescence measurements used to monitor the activity of the Luciferase enzyme, and fast spectroscopy detecting the distance between two chromophores implanted at the termini of a Barnase core. We found that interactions with magnetic materials altered the structural and functional resilience of the natively folded proteins, affecting their behavior under varying mild denaturing conditions. Minor structural disturbances at low urea concentrations were impeded in association with paramagnetic nanoparticles, whereas at higher urea concentrations, major structural deformation was hindered in association with ferromagnetic nanoparticles. These effects were attributed to spin exchange interactions due to differences in the magnetic imprinting properties of each type of nanoparticle. Additional measurements of proteins on macroscopic magnetic surfaces support this conclusion. The results imply a link between internal spin exchange interactions in a folded protein and its structural and functional integrity on magnetic surfaces. Together with the accumulating knowledge on CISS, our findings suggest that chirality and spin exchange interactions should be considered as additional factors governing protein structures.
Collapse
Affiliation(s)
- Hadar Manis Levy
- Applied Physics Department, the Hebrew University of Jerusalem, Jerusalem 91904, Israel.
| | - Avi Schneider
- Applied Physics Department, the Hebrew University of Jerusalem, Jerusalem 91904, Israel.
| | - Satyam Tiwari
- Department of Plant Molecular Biology, Faculty of Biology and Medicine, University of Lausanne, CH-1015 Lausanne, Switzerland
| | - Hagit Zer
- Department of Plant and Environmental Sciences, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Shira Yochelis
- Applied Physics Department, the Hebrew University of Jerusalem, Jerusalem 91904, Israel.
| | - Pierre Goloubinoff
- Department of Plant Molecular Biology, Faculty of Biology and Medicine, University of Lausanne, CH-1015 Lausanne, Switzerland
| | - Nir Keren
- Department of Plant and Environmental Sciences, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Yossi Paltiel
- Applied Physics Department, the Hebrew University of Jerusalem, Jerusalem 91904, Israel.
| |
Collapse
|
8
|
Naskar S, Saghatchi A, Mujica V, Herrmann C. Common Trends of Chiral Induced Spin Selectivity and Optical Dichroism with Varying Helix Pitch: A First‐Principles Study. Isr J Chem 2022. [DOI: 10.1002/ijch.202200053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sumit Naskar
- Department of Chemistry University of Hamburg, Harbor Bldg. 610 Luruper Chaussee 149 22761 Hamburg Germany
- The Hamburg Centre for Ultrafast Imaging Luruper Chaussee 149 Hamburg 22761 Germany
| | - Aida Saghatchi
- Department of Chemistry University of Hamburg, Harbor Bldg. 610 Luruper Chaussee 149 22761 Hamburg Germany
| | - Vladimiro Mujica
- School for Molecular Science Arizona State University Arizona, U.S.A
- Kimika Fakultatea Euskal Herriko Unibertsitatea UPV/EHU Manuel de Lardizabal Pasealekua 3 20018 Donostia, Euskadi Spain
| | - Carmen Herrmann
- Department of Chemistry University of Hamburg, Harbor Bldg. 610 Luruper Chaussee 149 22761 Hamburg Germany
- The Hamburg Centre for Ultrafast Imaging Luruper Chaussee 149 Hamburg 22761 Germany
| |
Collapse
|