Abstract Metal‐organic frameworks (MOFs) are a specific class of hybrid, crystalline, nano‐porous materials made metal‐ion‐based ‘nodes’ and organic linkers. Most the studies on MOFs largely focused porosity, chemical structural diversity, gas sorption, sensing, drug delivery, catalysis, separation applications. In contrast, much less reports paid attention to understanding tuning electrical properties MOFs. Poor conductivity (~10 −7 –10 −10 S cm −1 ), reported in earlier studies, impeded...

Molecular spintronics (spin + electronics), which aims to exploit both the spin degree of freedom and electron charge in molecular devices, has recently received massive attention. Our recent experiments on employ chiral molecules have unexpected property acting as filters, by way an effect we call "chiral-induced selectivity" (CISS). In this Account, discuss new types spin-dependent electrochemistry measurements their use probe transport properties nonmagnetic conductive polymers...

DOI: 10.1002/adma.201405249 electrode. By controlling the direction of magnetization nickel, it is possible to inject electrons that have mainly one spin orientation and verify their transport through PCT by monitoring cyclic voltammetry (CV) curve in electrochemical cell which redox couple not chiral. The CV curves refl ect a steady state double layer formed near working Another method monitor selectivity chronoamperometry, monitors time-dependent current at fi xed potential. At beginning,...

Optical control and readout of electron spin currents in thin films nanostructures have remained attractive yet challenging goals for emerging technologies designed applications information processing storage. Recent advances room-temperature polarization using nanometric chiral molecular assemblies suggest that chemically modified surfaces or interfaces can be used optical conversion by exploiting photoinduced charge separation injection from well-coupled organic chromophores quantum dots....

This work examines whether electrochemical redox reactions are sensitive to the electron spin orientation by examining effects of magnetic field and molecular chirality on charge transfer process. The working electrode is either a ferromagnetic nickel film or that coated with an ultrathin (5–30 nm) gold overlayer. self-assembled monolayer immobilizes couple containing chiral units, active dye toluidine blue O cysteine linking unit cytochrome c. By varying direction magnetization nickel,...

Abstract Molecular electronics exhibiting resistive‐switching memory features hold great promise for the next generation of digital technology. In this work, electrosynthesis ruthenium polypyridyl nanoscale oligomeric films is demonstrated on an indium tin oxide (ITO) electrode followed by ITO top contact deposition yielding large‐scale (junction area = 0.7 × cm 2 ) two terminal molecular junctions. The junctions exhibit non‐volatile resistive switching at a relatively lower operational...

Abstract An excellent combination of either oxides or metallic nanoparticles (NPs) and functional π‐electron rich conjugated molecules can originate a variety intriguing phenomena convenient for technological applications. Functional π‐conjugated aromatic hold the potential to control size, shape, morphology, optoelectronic properties through formation covalent interfaces. Interfacial charge transfer at nanoparticles−molecules interfaces plays vital roles in modulating photophysical...

Spin injection into solid-state devices is commonly performed by use of ferromagnetic metal electrodes. Here, we present a spin injector design without permanent magnet; rather, the selectivity determined chiral tunneling barrier. The barrier composed an ultrathin Al2O3 layer that deposited on top self-assembled monolayer (SAM), which consists cysteine or oligopeptide molecules. experimentally observed magnetoresistance can be up to 20% at room temperature, and it displays uncommon...

Chirality-induced spin selectivity (CISS), whereby helical molecules polarize the of electrical current, is an intriguing effect with potential applications in nanospintronics. In this nascent field, study CISS using paramagnetic chiral molecules, which could introduce another degree freedom controlling transport, remains so far unexplored. To address challenge, herein we propose use self-assembled monolayers (SAMs) lanthanide-binding peptides. elucidate nuclei, peptide coordinating or...

Abstract To understand the electrical and charge transport phenomena in either single or large‐scale molecular junctions, direct current (DC) measurements are mainly utilized. The current–voltage data obtained from DC on junctions (MJs) employed to infer parameters, including barrier height, contact resistance, attenuation factor (β), underlying mechanisms. However, can not separate individual components, as it produces a total that flows junctions. Contact resistance by extrapolating plot...

Oligomeric thin films of anthracene, pyrene, and naphthalene are electrochemically prepared on graphite rods for understanding enhanced supercapacitor explained through proton-coupled electron-transfer electrical double-layer mechanism.

CONSPECTUSOver the last few decades, molecular assemblies on solid substrates have become increasingly popular, challenging traditional systems and materials in terms of better control over structure function at nanoscale. A variety such with high complexity adjustable properties was generated basis organic, inorganic, organometallic, polymeric, biomolecular building blocks. Particular versatile elements this context are terpyridyls due to their wide design flexibility, ease...

The combination of photonics and spintronics opens new ways to transfer process information. It is shown here that in systems which organic molecules semiconductor nanoparticles are combined, matching these technologies results interesting phenomena. We report on light induced spin-dependent charge through helical oligopeptide-CdSe nanoparticles' (NPs) architectures deposited ferromagnetic substrates with small coercive force (∼100-200 Oe). spin control achieved by the application...

Abstract Molecular spintronics or spin‐based electronics, which utilizes both the spin degrees of freedom and electron charge, has become a hot topic in modern science. Since introduction 1988, many efforts have been devoted to controlling spin‐polarized current using an external magnetic field, leading implementation commercial solid‐state devices based on giant magnetoresistance effect. In molecular spintronics, much progress achieved with organic molecules, but role played by chiral...

The injection of pure spin current into the non-magnetic layer plays a crucial role in transmitting, processing, and storing data information realm spintronics. To understand broadband molecular spintronics, pyrene oligomer film (≈20 nm thickness) was prepared using an electrochemical method forming indium tin oxide (ITO) electrode/pyrene covalent interfaces. Permalloy (Ni80 Fe20 ) films with different nanoscale thicknesses were used as top contact over ITO/pyrene layers to estimate pumping...

Abstract The present era has seen tremendous demands for low‐cost electrochromic materials visible‐region multicolor display technology, paper‐based, flexible, and wearable electronic devices, smart windows, optoelectronic applications. Towards this goal, the authors report large‐scale, high‐yield robust polyelectrochromic devices fabricated on rigid to flexible ITO substrates comprising novel anthracene containing viologen, (1,1″‐bis(anthracen‐9‐ylmethyl)‐[4,4″‐bipyridine]‐1,1'‐diium...

Viologens are fascinating redox-active organic compounds that have been widely explored in electrochromic devices (ECDs). However, the combination of and resistive random-access memory a single viologen remains unexplored. We report coexistence bistate single-resistor (1R) functions novel viologen. A high-performance function is achieved by combining (BzV2+2PF6) with polythiophene (P3HT), enabling "push-pull" electronic effect due to efficient intermolecular charge transfer response an...

The assembly of functional molecules on conductive or dielectric substrates represents a promising avenue for employing molecule-centric technologies, encompassing sensor development, electrochromism, memory, and the facilitation charge spin transport at nanoscale. respective assemblies exhibit robust physical chemical properties, intrinsic to nature involved in functionalization substrate. Within spectrum available molecules, metal-polypyridyl complexes have emerged as one most systems...

Electrochemically grown heteroatoms containing organic films utilized to fabricate crossbar molecular junctions as classical capacitors for energy storage applications.

The Ru–polypyridyl-based resistive switching device shows non-volatile, bipolar memory and adaptive learning behavior. Ferrocenium cobaltocene reverse the bias polarity in redox-active matrices.

This article reports on a facile and fast strategy for the self-assembled monolayer (SAM) functionalization of nickel surfaces, employing cyclic voltammetry (CV) cycling suitable tailored solution containing species to be adsorbed. Results are presented ultrathin films formed Ni by 1-hexadecanethiol (C16), L-cysteine (L-cys), poly{methyl (2R)-3-(2,2'-bithiophen-4-ylsulfanyl)-2-[(tert-butoxycarbonyl)amino]propanoate} (PCT-L) thiophene-based chiral polymer. The effective formation high-quality...

Abstract Molecular assemblies of surface‐confined heterometallic molecular dyads (SURHMDs) composed optically rich and redox‐active Fe(pytpy) 2 ·2PF 6 (Fe‐PT), Ru(pytpy) (Ru‐PT) Os(pytpy) (Os‐PT) pytpy = 4′‐(4‐pyridyl)‐2,2′:6′,2″‐terpyridyl] complexes are fabricated via bottom‐up approach on SiO x based solid supports. Pairing the two different metal‐organic at a single platform results in significant enlargement optical window ( λ 400–800 nm), which can be interest for potential...

A resettable ternary memory module is proposed <italic>via</italic> commutable redox states.