Materials Literature
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Abstract A novel diamine monomer having pendant 4‐(quinolin‐8‐yloxy) aniline group was successfully synthesized via aromatic substitution reaction of 8‐quinolinol with p ‐fluoronitrobenzene followed by Pd/C catalyzed hydrazine reduction, amidation reaction between 4‐(quinolin‐8‐yloxy) aniline and 3,5‐dinitrobenzoylcho…
A combination of the evaporation-grinding MALDI-TOF MS sample preparation method with surface-modification techniques is presented for the characterization of intractable poly( p -phenylene sulfide)s (PPS). Studies focus on the relationships between the following experiments: (1) effects of MALDI laser fluence and are…
Degradable hollow nanospheres are prepared by self-assembly of rod-coil Alg-g-PEG/alpha-CD (Alginate-g-Poly(ethylene glycol)/alpha-Cyclodextrin) complexes in water, in which the rod-like segments were formed by inclusion between alpha-CDs and grafted PEG chains and the coil-like segments were protonated alginate backb…
The alpha4 atropoisomer of the meso tetrakis 8-hydroxyquinolinylamide porphyrin and its Pd complex binds Nd(iii) and sensitizes efficiently its near infrared (NIR) emission when excited in the visible domain.
A series of Gd 3 (Ga 1- x Fe x ) 5 O 12 (GGIG) compounds for magnetic refrigerants were characterized by magnetization and specific heat measurements. For comparison, the base compound gadolinium gallium garnet (GGG) was also measured. From the magnetization measurements, the entropy change by external magnetic field…
The polymer blends containing polypyrrole (PPy) and the sulphonic acids such as β-naphthalene sulfonic acid (NSA), camphor sulfonic acid (CSA), and dodecylbenzenesulfonic acid (DBSA) were synthesized by in situ deposition technique in an aqueous media using ammonium per sulfate (APS) as an initiator. The obtained film…
A supramolecular phthalocyanine-perylenediimide donor-acceptor array has been assembled by using a melamine/perylenediimide motif. Photoexcitation of the perylenediimide component affords transduction of singlet excited state energy to the energetically lower lying phthalocyanine.
The first chiral BEDT-TTF-tris(oxalato)metallate(III) salt has been crystallised from a solution containing the racemic anion in the chiral solvent (R)-(−)-carvone.
Abstract Two macromolecular constructs incorporating a single polymer backbone with multiple photochromic side chains are developed. Both systems are prepared from preformed photochromic [1,3]oxazines after the ring‐opening polymerization of their norbornene appendages. In solution, UV illumination of these polymers o…
Abstract The aim of this study was to improve the mechanical properties of thermoplastic starch foams prepared from cassava starch blended with natural rubber latex by reactive blending. Potassium persulfate was used as an initiator for graft copolymerization between the starch and natural rubber during baking. The st…
The electron−hole excitonic nature of high energy states is investigated in neutral and charged Si clusters, motivated by the multiple exciton generation (MEG) process that is highly debated in photovoltaic literature. Silicon forms the basis for much of the photovoltaic industry, and our high-level, first principles…
Online partial discharge (PD) analysis of power transformers is sometimes complex due to the presence of large disturbance and noise as well as to uncertainty in PD source identification. In this paper, a novel approach to PD detection and analysis in online power transformers is presented. The proposed approach provi…
Abstract We investigate here the consequence on light‐induced and thermally induced spin‐crossover (SCO) properties with particle size reduction from the macroscopic to microscale to nanoscale domains. Three samples with distinct particle sizes of the SCO coordination polymer [Fe(NCS) 2 (bpe) 2 ] [bpe = 1,2‐bis(4′‐pyr…
Recently, we reported that scandium trifluoromethanesulfonate [Sc(OTf) 3 ] and scandium trifluoromethanesulfonimide could catalyze polycondensations of dicarboxylic acids and diols. Although these polycondensations were one-step and occurred at the moderate temperature of 35 °C, they required large amounts of the cata…
Eine flache Welt: Ladungsneutrale pinzettenartig cyclometallierte Aryl(acetylido)platin(II)-Komplexe können mithilfe bilateraler intermolekularer nichtkovalenter Wechselwirkungen zu quasi-zweidimensionalen Nanoblättern angeordnet werden (siehe Bild). Diese können sich auf einem flachen Substrat zu Schichtmaterialien o…
We investigate the capillary filling of three-dimensional microchannels with surfaces patterned by posts of square cross section. We show that pinning on the edges of the posts suppresses and can halt capillary filling. We stress the importance of the channel walls in controlling whether filling can occur. In particul…
Abstract A combination of suspension polymerization and postcrosslinking was used to prepare hypercrosslinked polystyrene (H‐PS) microspheres with controllably bimodal pore size distribution in the presence of toluene and polypropylene (PP) as a coporogen. The proportion of PP in the coporogen was changed to investiga…
Molecular electronics is a new, exciting and interdisciplinary field of research. The main concern of the subject is to exploit the organic materials in electronic and optoelectronic devices. On the other hand, the Langmuir–Blodgett (LB) film deposition technique is one of the best among few methods used to manipulate…
We demonstrate in this Rapid Communication that in an assembly of stacked metallic U-shaped resonators, pure magnetic and electric responses are, respectively, realized, and the magnetic and electric responses can be switched at the same frequency by changing the polarization of incident light for $90\ifmmode^\circ\el…
Defect-induced ferromagnetism in nanoparticles has recently attracted extensive attention. We report here that (111) twinned BaTiO 3 crystallites synthesized through a modified hydrothermal method can exhibit ferromagnetic properties. The unexpected ferromagnetism is verified to originate from the point defects. We al…