Full Text Journal Articles by
Author Ron Naaman

Advertisement

Find full text journal articles






Long-Range Spin-Selective Transport in Chiral Metal-Organic Crystals with Temperature-Activated Magnetization.

Amit Kumar Mondal, Noam Brown, Suryakant Mishra, Pandeeswar Makam, Dahvyd Wing, Sharon Gilead, Yarden Wiesenfeld, Gregory Leitus, Linda J W Shimon, Raanan Carmieli, David Ehre, Grzegorz Kamieniarz, Jonas Fransson, Oded Hod, Leeor Kronik, Ehud Gazit, Ron Naaman,

Room-temperature, long-range (300 nm), chirality-induced spin-selective electron conduction is found in chiral metal-organic Cu(II) phenylalanine crystals, using magnetic conductive-probe atomic force microscopy. These crystals are found to be also weakly ferromagnetic and ferroelectric. Notably, the observed ferromagnetism is thermally activated, so that the crystals are antiferromagnetic at low temperatures and ... Read more >>

ACS Nano (ACS nano)
[2020, :]

Cited: 0 times

View full text PDF listing >>



Chiral Induced Spin Selectivity Gives a New Twist on Spin-Control in Chemistry.

Ron Naaman, Yossi Paltiel, David H Waldeck,

ConspectusThe electron's spin, its intrinsic angular momentum, is a quantum property that plays a critical role in determining the electronic structure of molecules. Despite its importance, it is not used often for controlling chemical processes, photochemistry excluded. The reason is that many organic molecules have a total spin zero, namely, ... Read more >>

Acc Chem Res (Accounts of chemical research)
[2020, :]

Cited: 0 times

View full text PDF listing >>



Advertisement

Asymmetric reactions induced by electron spin polarization.

B P Bloom, Y Lu, Tzuriel Metzger, Shira Yochelis, Yossi Paltiel, Claudio Fontanesi, Suryakant Mishra, Francesco Tassinari, Ron Naaman, D H Waldeck,

Essential aspects of the chiral induced spin selectivity (CISS) effect and their implications for spin-controlled chemistry and asymmetric electrochemical reactions are described. The generation of oxygen through electrolysis is discussed as an example in which chirality-based spin-filtering and spin selection rules can be used to improve the reaction's efficiency and ... Read more >>

Phys Chem Chem Phys (Physical chemistry chemical physics : PCCP)
[2020, 22(38):21570-21582]

Cited: 0 times

View full text PDF listing >>



Helicity control in the aggregation of achiral squaraine dyes in solution and thin films.

Bert Meijer, Andreas T Rösch, Anja Palmans, Stefan Meskers, Jorn Robben, Qirong Zhu, Francesco Tassinari, Ron Naaman,

Squaraine dyes are well known for their strong absorption in the visible regime. Reports on chiral squaraine dyes are, however, scarce. To address this gap, we here report two novel chiral squaraine dyes and their achiral counterparts. The presented dyes are aggregated in solution and in thin films. A detailed ... Read more >>

Chemistry (Chemistry (Weinheim an der Bergstrasse, Germany))
[2020, :]

Cited: 0 times

View full text PDF listing >>



Spin Filtering Along Chiral Polymers.

Suryakant Mishra, Amit Kumar Mondal, Eilam Z B Smolinsky, Ron Naaman, Katsuhiro Maeda, Tatsuya Nishimura, Tsuyoshi Taniguchi, Takumu Yoshida, Kokoro Takayama, Eiji Yashima,

Spin-dependent conduction and polarization in chiral polymers were studied for polymers organized as self-assembled monolayers with conduction along the polymer backbone, namely, along its longer axis. Large spin polarization and magnetoresistance effects were observed, showing a clear dependence on the secondary structure of the polymer. The results indicate that the ... Read more >>

Angew Chem Int Ed Engl (Angewandte Chemie (International ed. in English))
[2020, :]

Cited: 0 times

View full text PDF listing >>



Highly Efficient and Tunable Filtering of Electrons' Spin by Supramolecular Chirality of Nanofiber-Based Materials.

Chidambar Kulkarni, Amit Kumar Mondal, Tapan Kumar Das, Gal Grinbom, Francesco Tassinari, Mathijs F J Mabesoone, E W Meijer, Ron Naaman,

Organic semiconductors and organic-inorganic hybrids are promising materials for spintronic-based memory devices. Recently, an alternative route to organic spintronic based on chiral-induced spin selectivity (CISS) is suggested. In the CISS effect, the chirality of the molecular system itself acts as a spin filter, thus avoiding the use of magnets for ... Read more >>

Adv Mater (Advanced materials (Deerfield Beach, Fla.))
[2020, 32(7):e1904965]

Cited: 1 time

View full text PDF listing >>



Spin-dependent charge transfer at chiral electrodes probed by magnetic resonance.

Felix Blumenschein, Mika Tamski, Christophe Roussel, Eilam Z B Smolinsky, Francesco Tassinari, Ron Naaman, Jean-Philippe Ansermet,

Chirality-induced spin selectivity is evidenced by exciting the spin resonance of radicals in an electrochemical cell where the working electrode is covered with a chiral self-assembled monolayer. Because the electron transfer to and from the paramagnetic radical is spin dependent, the electrochemical current changes at resonance. This electrically-detected magnetic resonance ... Read more >>

Phys Chem Chem Phys (Physical chemistry chemical physics : PCCP)
[2020, 22(3):997-1002]

Cited: 1 time

View full text PDF listing >>



The Electron Spin as a Chiral Reagent.

Tzuriel S Metzger, Suryakant Mishra, Brian P Bloom, Naama Goren, Avner Neubauer, Guy Shmul, Jimeng Wei, Shira Yochelis, Francesco Tassinari, Claudio Fontanesi, David H Waldeck, Yossi Paltiel, Ron Naaman,

We show that enantioselective reactions can be induced by the electron spin itself and that it is possible to replace a conventional enantiopure chemical reagent by spin-polarized electrons that provide the chiral bias for enantioselective reactions. Three examples of enantioselective chemistry resulting from electron-spin polarization are presented. One demonstrates the ... Read more >>

Angew. Chem. Int. Ed. Engl. (Angewandte Chemie (International ed. in English))
[2020, 59(4):1653-1658]

Cited: 1 time

View full text PDF listing >>



Spin-Dependent Electron Transport through Bacterial Cell Surface Multiheme Electron Conduits.

Suryakant Mishra, Sahand Pirbadian, Amit Kumar Mondal, Mohamed Y El-Naggar, Ron Naaman,

Multiheme cytochromes, located on the bacterial cell surface, function as long-distance (>10 nm) electron conduits linking intracellular reactions to external surfaces. This extracellular electron transfer process, which allows microorganisms to gain energy by respiring solid redox-active minerals, also facilitates the wiring of cells to electrodes. While recent studies have suggested ... Read more >>

J Am Chem Soc (Journal of the American Chemical Society)
[2019, 141(49):19198-19202]

Cited: 0 times

View full text PDF listing >>



Electric-Field-Enhanced Adsorption of Chiral Molecules on Ferromagnetic Substrates.

Kakali Santra, Qian Zhang, Francesco Tassinari, Ron Naaman,

The effect of an electric field on the adsorption of oligopeptides and DNA on a ferromagnetic substrate magnetized perpendicular to the surface was investigated. The direction of the magnetic moment of the substrate defines different adsorption rates for different enantiomers, and the direction of the electric field, perpendicular to the ... Read more >>

J Phys Chem B (The journal of physical chemistry. B)
[2019, 123(44):9443-9448]

Cited: 0 times

View full text PDF listing >>



Low-Resistance Molecular Wires Propagate Spin-Polarized Currents.

George Bullard, Francesco Tassinari, Chih-Hung Ko, Amit Kumar Mondal, Ruobing Wang, Suryakant Mishra, Ron Naaman, Michael J Therien,

Spin based properties, applications, and devices are typically related to inorganic ferromagnetic materials. The development of organic materials for spintronic applications has long been encumbered by its reliance on ferromagnetic electrodes for polarized spin injection. The discovery of the chirality-induced spin selectivity (CISS) effect, in which chiral organic molecules serve ... Read more >>

J Am Chem Soc (Journal of the American Chemical Society)
[2019, 141(37):14707-14711]

Cited: 1 time

View full text PDF listing >>



Spin-Dependent Electron Transport through Bacterial Cell Surface Multiheme Electron Conduits

Suryakant Mishra, Sahand Pirbadian, Amit Kumar Mondal, Moh El-Naggar, Ron Naaman,

Multiheme cytochromes, located on the bacterial cell surface, function as long-distance (> 10 nm) electron conduits linking intracellular reactions to external surfaces. This extracellular electron transfer process, which allows microorganisms to gain energy by respiring solid redox-active minerals, also facilitates the wiring of cells to electrodes. While recent studies suggested ... Read more >>

()
[, :]

Cited: 0 times

View full text PDF listing >>



Spin Selectivity in Photoinduced Charge-Transfer Mediated by Chiral Molecules.

John M Abendroth, Dominik M Stemer, Brian P Bloom, Partha Roy, Ron Naaman, David H Waldeck, Paul S Weiss, Prakash Chandra Mondal,

Optical control and readout of electron spin and spin currents in thin films and nanostructures have remained attractive yet challenging goals for emerging technologies designed for applications in information processing and storage. Recent advances in room-temperature spin polarization using nanometric chiral molecular assemblies suggest that chemically modified surfaces or interfaces ... Read more >>

ACS Nano (ACS nano)
[2019, 13(5):4928-4946]

Cited: 3 times

View full text PDF listing >>



Electric Field-Controlled Magnetization in GaAs/AlGaAs Heterostructures-Chiral Organic Molecules Hybrids.

Eilam Z B Smolinsky, Avner Neubauer, Anup Kumar, Shira Yochelis, Eyal Capua, Raanan Carmieli, Yossi Paltiel, Ron Naaman, Karen Michaeli,

We study GaAs/AlGaAs devices hosting a two-dimensional electron gas and coated with a monolayer of chiral organic molecules. We observe clear signatures of room-temperature magnetism, which is induced in these systems by applying a gate voltage. We explain this phenomenon as a consequence of the spin-polarized charges that are injected ... Read more >>

J Phys Chem Lett (The journal of physical chemistry letters)
[2019, 10(5):1139-1145]

Cited: 2 times

View full text PDF listing >>



Effect of Oxidative Damage on Charge and Spin Transport in DNA.

Suryakant Mishra, Vishvendra S Poonia, Claudio Fontanesi, Ron Naaman, Aaron M Fleming, Cynthia J Burrows,

A Hall device was used for measuring spin polarization on electrons that are either reorganized within the molecules or transmitted through the self-assembled monolayers of DNA adsorbed on the device surface. We were able to observe spin-dependent charge polarization and charge transport through double-stranded DNA of various lengths and through ... Read more >>

J. Am. Chem. Soc. (Journal of the American Chemical Society)
[2019, 141(1):123-126]

Cited: 3 times

View full text PDF listing >>



Single Domain 10 nm Ferromagnetism Imprinted on Superparamagnetic Nanoparticles Using Chiral Molecules.

Guy Koplovitz, Gregory Leitus, Supriya Ghosh, Brian P Bloom, Shira Yochelis, Dvir Rotem, Fabio Vischio, Marinella Striccoli, Elisabetta Fanizza, Ron Naaman, David H Waldeck, Danny Porath, Yossi Paltiel,

The rapid growth in demand for data and the emerging applications of Big Data require the increase of memory capacity. Magnetic memory devices are among the leading technologies for meeting this demand; however, they rely on the use of ferromagnets that creates size reduction limitations and poses complex materials requirements. ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2019, 15(1):e1804557]

Cited: 6 times

View full text PDF listing >>



Directing Charge Transfer in Quantum Dot Assemblies.

Brian P Bloom, Ruibin Liu, Peng Zhang, Supriya Ghosh, Ron Naaman, David N Beratan, David H Waldeck,

The optical and electronic properties of semiconductor quantum dots (QDs) make them attractive candidates for applications in photovoltaics, spintronics, photocatalysis, and optoelectronics. Understanding how to control the flow of charge in QD assemblies is essential for realizing novel applications. This Account explores some unique characteristics of charge transport in QD ... Read more >>

Acc. Chem. Res. (Accounts of chemical research)
[2018, 51(10):2565-2573]

Cited: 2 times

View full text PDF listing >>



Single Nanoparticle Magnetic Spin Memristor.

Hammam Al-Bustami, Guy Koplovitz, Darinka Primc, Shira Yochelis, Eyal Capua, Danny Porath, Ron Naaman, Yossi Paltiel,

There is an increasing demand for the development of a simple Si-based universal memory device at the nanoscale that operates at high frequencies. Spin-electronics (spintronics) can, in principle, increase the efficiency of devices and allow them to operate at high frequencies. A primary challenge for reducing the dimensions of spintronic ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2018, 14(30):e1801249]

Cited: 5 times

View full text PDF listing >>



Chirality and Spin: A Different Perspective on Enantioselective Interactions.

Ron Naaman, Yossi Paltiel, David H Waldeck,

This review describes a new perspective on the role that electron spin plays in the intermolecular forces between two chiral molecules and between chiral molecules and surfaces. This different role of the spin arises from the chiral induced spin selectivity (CISS) effect which is manifest when electrons are moving in ... Read more >>

Chimia (Aarau) (Chimia)
[2018, 72(6):394-398]

Cited: 3 times

View full text PDF listing >>



Separation of enantiomers by their enantiospecific interaction with achiral magnetic substrates.

Koyel Banerjee-Ghosh, Oren Ben Dor, Francesco Tassinari, Eyal Capua, Shira Yochelis, Amir Capua, See-Hun Yang, Stuart S P Parkin, Soumyajit Sarkar, Leeor Kronik, Lech Tomasz Baczewski, Ron Naaman, Yossi Paltiel,

It is commonly assumed that recognition and discrimination of chirality, both in nature and in artificial systems, depend solely on spatial effects. However, recent studies have suggested that charge redistribution in chiral molecules manifests an enantiospecific preference in electron spin orientation. We therefore reasoned that the induced spin polarization may ... Read more >>

Science (Science (New York, N.Y.))
[2018, 360(6395):1331-1334]

Cited: 14 times

View full text PDF listing >>



Injection of Spin-Polarized Electrons into a AlGaN/GaN Device from an Electrochemical Cell: Evidence for an Extremely Long Spin Lifetime.

Anup Kumar, Eyal Capua, Claudio Fontanesi, Raanan Carmieli, Ron Naaman,

Spin-polarized electrons are injected from an electrochemical cell through a chiral self-assembled organic monolayer into a AlGaN/GaN device in which a shallow two-dimensional electron gas (2DEG) layer is formed. The injection is monitored by a microwave signal that indicates a coherent spin lifetime that exceeds 10 ms at room temperature. ... Read more >>

ACS Nano (ACS nano)
[2018, 12(4):3892-3897]

Cited: 4 times

View full text PDF listing >>



Spin-Dependent Processes Measured without a Permanent Magnet.

Claudio Fontanesi, Eyal Capua, Yossi Paltiel, David H Waldeck, Ron Naaman,

A novel Hall circuit design that can be incorporated into a working electrode, which is used to probe spin-selective charge transfer and charge displacement processes, is reviewed herein. The general design of a Hall circuit based on a semiconductor heterostructure, which forms a shallow 2D electron gas and is used ... Read more >>

Adv. Mater. Weinheim (Advanced materials (Deerfield Beach, Fla.))
[2018, 30(41):e1707390]

Cited: 1 time

View full text PDF listing >>



Chirality Dependent Charge Transfer Rate in Oligopeptides.

Francesco Tassinari, Dilhara R Jayarathna, Nirit Kantor-Uriel, Kathryn L Davis, Vaibhav Varade, Catalina Achim, Ron Naaman,

It is shown that "spontaneous magnetization" occurs when chiral oligopeptides are attached to ferrocene and are self-assembled on a gold substrate. As a result, the electron transfer, measured by electrochemistry, shows asymmetry in the reduction and oxidation rate constants; this asymmetry is reversed between the two enantiomers. The results can ... Read more >>

Adv. Mater. Weinheim (Advanced materials (Deerfield Beach, Fla.))
[2018, 30(21):e1706423]

Cited: 3 times

View full text PDF listing >>



Bacteriorhodopsin based non-magnetic spin filters for biomolecular spintronics.

Vaibhav Varade, Tal Markus, Kiran Vankayala, Noga Friedman, Mordechai Sheves, David H Waldeck, Ron Naaman,

We discuss spin injection and spin valves, which are based on organic and biomolecules, that offer the possibility to overcome some of the limitations of solid-state devices, which are based on ferromagnetic metal electrodes. In particular, we discuss spin filtering through bacteriorhodopsin in a solid state biomolecular spin valve that ... Read more >>

Phys Chem Chem Phys (Physical chemistry chemical physics : PCCP)
[2018, 20(2):1091-1097]

Cited: 4 times

View full text PDF listing >>



High Circular Polarization of Electroluminescence Achieved via Self-Assembly of a Light-Emitting Chiral Conjugated Polymer into Multidomain Cholesteric Films.

Daniele Di Nuzzo, Chidambar Kulkarni, Baodan Zhao, Eilam Smolinsky, Francesco Tassinari, Stefan C J Meskers, Ron Naaman, E W Meijer, Richard H Friend,

We demonstrate a facile route to obtain high and broad-band circular polarization of electroluminescence in single-layer polymer OLEDs. As a light-emitting material we use a donor-acceptor polyfluorene with enantiomerically pure chiral side-chains. We show that upon thermal annealing the polymer self-assembles into a multidomain cholesteric film. By varying the thickness ... Read more >>

ACS Nano (ACS nano)
[2017, 11(12):12713-12722]

Cited: 9 times

View full text PDF listing >>



Advertisement

Disclaimer
0.9977 s