A5090825991- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Crystallography and molecular interactions
- Advanced Sensor and Energy Harvesting Materials
- Metal-Organic Frameworks: Synthesis and Applications
- Dielectric materials and actuators
- Carbon dioxide utilization in catalysis
- Luminescence and Fluorescent Materials
- Conducting polymers and applications
- Polydiacetylene-based materials and applications
- Covalent Organic Framework Applications
- Advanced Materials and Mechanics
- Crystal structures of chemical compounds
- Catalysts for Methane Reforming
- Organoboron and organosilicon chemistry
- Carbon Dioxide Capture Technologies
- MXene and MAX Phase Materials
- Catalysis and Hydrodesulfurization Studies
- Surface Chemistry and Catalysis
- Chemical Synthesis and Characterization
- Polyoxometalates: Synthesis and Applications
- Ferroelectric and Piezoelectric Materials
- Polymer composites and self-healing
- Enhanced Oil Recovery Techniques
- Micro and Nano Robotics
Korea Advanced Institute of Science and Technology
2019-2024
Indian Institute of Technology Kharagpur
2012-2019
Abstract Electro-active ionic soft actuators have been intensively investigated as an artificial muscle for robotics due to their large bending deformations at low voltages, small electric power consumption, superior energy density, high safety and biomimetic self-sensing actuation. However, slow responses, poor durability bandwidth, mainly resulting from improper distribution of conducting phase in polyelectrolyte membranes, hinder practical applications real fields. We report a procedure...
Abstract Electro‐ionic soft actuators, capable of continuous deformations replacing non‐compliant rigid mechanical components, attract increasing interest in the field next‐generation metaverse interfaces and robotics. Here, a novel MXene (Ti 3 C 2 T x ) electrode anchoring manganese‐based 1,3,5‐benzenetricarboxylate metal‐organic framework (MnBTC) for ultrastable electro‐ionic artificial muscles is reported. By facile supramolecular self‐assembly, Ti ‐MnBTC hybrid nanoarchitecture forms...
Film review: Two amide-containing bisolefin monomers undergo solid-state polymerization (see example) through a [2+2] reaction in single-crystal-to-single-crystal fashion. The transformation was favored by the self-templating and shock-absorbing nature of hydrogen-bonding layers. pyridine-containing polymers were soluble useful for making plastic films with considerable tensile strengths. As service to our authors readers, this journal provides supporting information supplied authors. Such...
Abstract Considerable research has been conducted on the application of functional nano‐fillers to enhance power generation capabilities triboelectric nanogenerators (TENGs). However, these additives often exhibit a decrease in output at higher concentration. Here, Janus cobalt metal–organic framework‐SEBS (JCMS) membrane is reported as dual‐purpose dielectric layer capable efficiently capturing and blocking charges for high‐performance TENGs. The JCMS produced asymmetrically through...
The advancement in smart devices and soft robotics necessitates the use of multiresponsive actuators with high actuation stroke stable reversibility for their real-world applications. Here, this work reports a magnetically electrically dual responsive actuator based on neodymium iron bimetallic organic frameworks (NdFeMOFs@700). ferromagnetic NdFeMOFs@700 exhibits porous carbon structure excellent magnetization saturation (166.96 emu g-1 ) which allows its application to functional material...
Abstract Pyrazole‐linked covalent organic polymer is synthesized using an asynchronous double Schiff base from readily available monomers. The one‐pot reaction features no metals as a building block or reagent, hence facilitating the structural purity and industrial scalability of design. Through single‐crystal study on model compound, formation found to follow syn addition, kinetically favored product, suggesting that reactivity amine carbonyls dictate order geometry framework building....
Tailoring transfer dynamics of mobile cations across solid-state electrolyte-electrode interfaces is crucial for high-performance electrochemical soft actuators. In general, actuation performance directly proportional to the affinity and anions in electrolyte opposite electrode surfaces under an applied field. Herein, maximize actuation, we report electronically conjugated polysulfonated covalent organic framework ( p S-COF) used as a common host 1-ethyl-3-methylimidazolium cation embedded...
Crystalline coordination polymers of organic (CPOPs) were synthesized <italic>via</italic> photopolymerization Ag(<sc>i</sc>) dienes which have a self-templating nature due to the formation N–H⋯O hydrogen bonded layers.
Making metal–organic frameworks (MOFs) that are stabilized in nonpolar media is not as straightforward making their inorganic nanoparticle counterparts, since surfactants penetrate through the porous structures or dissolve secondary building units (SBUs) ligand-exchange linker modulator mechanisms. Herein, we report calixarenes stabilize UIO-66 nanoparticles effectively by remaining outside grains size exclusion, without pores becoming blocked, all while providing amphiphilicity permits...
Getting selectively organized: Molecules of bis-pyridyl dienes have been stereoselectively photodimerized to form their strained double [2+2] reaction products by using argentophilic forces (see scheme). A pronounced influence anions and the efficiency a mechanochemical synthesis also described. As service our authors readers, this journal provides supporting information supplied authors. Such materials are peer reviewed may be re-organized for online delivery, but not copy-edited or...
The unsymmetrical bispyridyl olefins containing amides (UBOs) have been synthesized to study solid state [2 + 2] photochemical reactions with or without template. crystal structures of UBOs were determined using a powder X-ray diffraction technique. pure organic materials found form head-to-head (HH)-dimers upon irradiation in accordance their structures. Further, Ag···Ag and Ag···π interactions shown template head-to-tail (HT) photodimerization one-dimensional-coordination polymers...
The advancement of active electrode materials is essential to meet the demand for multifaceted soft robotic interactions. In this study, a new type porous carbonaceous sphere (PCS) multimodal actuator capable both magnetoactive and electro-ionic responses reported. PCS, derived from simultaneous oxidative reductive breakdown specially designed cobalt-based metal-organic frameworks (Co-MOFs) with varying metal-to-ligand ratios, exhibits high specific surface area 529 m
Abstract The assembly of 2D nanosheets with other functional nanomaterials enables the creation materials unique property combinations that cannot be achieved in single‐phase materials. In particular, a combination inorganic and organic components provides pathway to structures offering highly durable ionic electronic conductivity simultaneously. Here, controlled growth amorphous metal–organic framework ( MOF) interlayer spaces Ti 3 C 2 T x MXene for enhancing oxidation stability...
Abstract An organic polymer containing cyclobutanes and amides as backbones pyridyl groups sidearms was synthesized by single‐crystal‐to‐single‐crystal (SCSC) [2+2]‐photopolymerization in the coordination polymers (CPs) of diene. The diene molecule photo‐inactive its crystals formed a triply intertwined 1D‐helical CP with Cd(NO 3 ) 2 Cu(NO salts. 1D‐CP transformed into threefold interpenetrated 3D‐networks CdSO 4 topology through [2+2]‐reaction SCSC manner upon irradiation. separated from...
Filmriss? Nein danke! Zwei amidhaltige Diolefinmonomere polymerisieren über eine [2+2]-Reaktion in einem Einkristall-zu-Einkristall-Prozess (siehe Beispiel). Die Festkörperumwandlung wird begünstigt durch Selbsttemplatisierung und die ausgleichende Wirkung wasserstoffverbrückter Schichten. Aus den löslichen pyridinfunktionalisierten Polymeren konnten zugfeste Filme erhalten werden.
The molecular isomers of a diene-containing amide and pyridine moieties revealed that they exhibit different crystal structures reactivities. One the isomer forms two-fold interpenetrated diamonded network via N–H···N hydrogen bonds undergoes [2 + 2] photopolymerization in solid-state despite having unfavorable criss-cross aligned double bonds.
N,N′-Bis(3-pyridylacrylamido) derivatives are shown to form cocrystals and salts with the dihalogens I2 Br2. The detailed structural analyses of reveal that amide N–H···O hydrogen bonding plays major role in cocrystals, while N–H···N predominates salts. With an increase halogen content lattice interactions involved halogens (N–H···X bonding, N···X X···X bonding) found overpower conventional bonding. In one such heavy salt, it is water acts as a mere space-filling species not any or bonds All...
Abstract Electro‐ionic artificial muscles, consisting of a configuration where an electrolyte membrane is flanked by two active electrodes, have emerged as transformative components in the field soft robotics. Despite this, current actuation performance falls short for many practical applications, because most existing electrode materials exhibit limitations terms their properties. Here, multifunctional material reported electro‐ionic muscle, employing triazine framework that incorporates...
The coordination polymers (CPs) of bis(3-pyridyl-acrylamido)ethane (L) with nitrate, acetate, and perchlorate salts Cu(II), Cd(II), Zn(II) were synthesized, their crystal structures have been analyzed respect to the influence anions, hydrogen bonding, solid state [2 + 2] photochemical reactivity. Four out six CPs (1–4) containing NO3– AcO– ions found form one-dimensional chains exhibit Two (5–6) ClO4– ML2 discrete complexes which are photostable. 1 4 single dimers, while 2 3 resulted in...
The chemical fixation of CO2 with epoxides to cyclic carbonate is an attractive 100% atom economic reaction. It a safe and green alternative the route from diols toxic phosgene. In this manuscript, we present new zwitterionic π–conjugated catalyst (Covalent Organic Polymer, COP-213) based on guanidinium β-ketoenol functionality, which synthesized triaminoguanidinium halide β-ketoenols via ampoule method at 120 °C. characterized by FTIR-attenuated total reflection (ATR), Powder X-Ray...
The homologous series of phenyl and pyridyl substituted bis(acrylamido)alkanes have been synthesized with the aim systematic analysis their crystal structures solid-state [2 + 2] reactivities. changes in respect to a small change molecular structure, that is by varying alkyl spacers between acrylamides and/or end groups (phenyl, 2-pyridyl, 3-pyridyl, 4-pyridyl) on C-terminal amide, were analyzed terms hydrogen-bonding interference (N—H...N py versus N—H...O=C) network geometries. In this...