New insights into synthesis and oligomerization of ε-lactams derived from the terpenoid ketone (−)-menthone
We present convenient ring-opening polymerizations of two lactams derived from menthone for the synthesis of sustainable oligo-, polyamides.
Materials Literature
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Rapid fabrication of silver microplates under an oxidative etching environment consisting of O 2 /Cl − , NH 4 OH/H 2 O 2 , and H 2 O 2
Chloride ions are essential for creating an etching environment capable of selective dissolution of singly and multiply twinned crystals, while leaving plate structures unaffected.
Hierarchical porous carbon nanofibrous membranes with an enhanced shape memory property for effective adsorption of proteins
A hierarchical porous CNF membrane with robust mechanical properties, exhibiting intriguing shape memory properties and efficient protein adsorption performance.
Stable iso-bacteriochlorin mimics from porpholactone: effect of a β-oxazolone moiety on the frontier π-molecular orbitals
A β-oxazolone moiety on porpholactone plays an important role in stabilizing such hydroporphyrin structures through tuning energy gaps between the frontier π-molecular orbitals, which is verified by MCD studies combined with TD-DFT calculations.
Interstitial oxide ion migration in scheelite-type electrolytes: a combined neutron diffraction and computational study
W-doped LnNbO <sub>4+d</sub> compounds (Ln = La, Nd) have been recently proposed as novel interstitial-based oxide ion conductors.
Oligoethylene glycol-substituted aza-BODIPY dyes as red emitting ER-probes
This study features aza-BODIPY (BF2-chelated azadipyrromethene) dyes with two aromatic substituents linked by oligoethylene glycol fragments to increase hydrophilicity of aza-BODIPY for applications in intracellular imaging. To prepare these, two chalcones were attached α,ω onto oligoethylene glycol fragments, then re…
l -Lactide polymerization catalysed by tin( ii ) 2-ethyl-hexanoate. A deeper look at chain transfer reactions
Segmental exchange reactions in <sc>l</sc> -lactide polymerization catalysed by tin octoate yield chains with even and odd numbers of lactoyl units. The efficiency of the reactions depends on the position of the attacked unit in the chain. The terminal units are at least 100 times more reactive than others.
Influence of Mechanical Stress on the Potential Distribution on a 301 LN Stainless Steel Surface
The aim of the present work was to study the influence of the stress on the electrode potential of the austenitic stainless steel 301LN using Scanning Kelvin Probe (SKP). It was found that elastic deformation reversibly ennobles the potential whereas plastic deformation decreases the potential in both tensile and comp…
Manganese oxide nanosheets and a 2D hybrid of graphene-manganese oxide nanosheets synthesized by liquid-phase exfoliation
Manganese oxide nanosheets were synthesized using liquid-phase exfoliation that achieved suspensions in isopropanol with concentrations of up to 0.45 mg ml-1. A study of solubility parameters showed that the exfoliation was optimum in N,N-Dimethylformamide followed by isopropanol and diethylene glycol. Isopropanol was…
A STUDY OF MORPHOLOGICAL, THERMAL, MECHANICAL AND BARRIER PROPERTIES OF PLA BASED BIOCOMPOSITES PREPARED WITH MICRO AND NANO SIZED CELLULOSIC FIBERS
Polylactic acid (PLA) nanocomposites with embedded acetylated cellulose nanofiber (CNF-Ac) and microcrystalline cellulose (MCC) were prepared using a solvent casting procedure. The microstructure, topography, barrier, mechanical and thermal properties of the composites were evaluated. Scanning electron microscopy micr…
Layered Zinc Hydroxide Salts Intercalated with Anionic Surfactants and Adsolubilized with UV Absorbing Organic Molecules
Two anionic surfactants, dodecylsulfate (DDS) and dodecylbenzenesulfonate (DBS), were intercalated into layered zinc hydroxide salts (LHS) using the direct alkaline co-precipitation method, and characterized by powder X-ray diffraction (PXRD), Fourier-transform infrared (FTIR) and thermogravimetric analysis/differenti…
Cytotoxic effect of extract from Dunaliella salina against SH-SY5Y neuroblastoma cells
Cytotoxic effects of essential oils extracted from Dunaliella salina on SH-SY5Y human neuroblastoma cells were investigated in this study. GC-MS analysis was used for determination of the composition of essential oils found in Dunaliella salina extract. All experimented concentrations of Dunaliella salina extract on S…
Mechanical Behaviour of Copper and Aluminium Particles Reinforced Epoxy Resin Composites
In this study, copper and aluminium particles reinforced epoxy resin was fabricated to investigate the effect of particles on the mechanical properties of epoxy resin (PL-411). Copper (Cu) and aluminium (Al) particles were added in the epoxy resin as filler with the variation of weight percentage (1%, 5%, 8% and 10%).…
Multiple thermal magnetic relaxation in a two-dimensional ferromagnetic dysprosium( iii ) metal–organic framework
Intramolecular ferromagnetic interaction exists in a dysprosium( <sc>iii</sc> ) MOF with a highly ordered 2D (4, 4) grid network, showing two-step thermal magnetic relaxation.
Investigation of polylactide/poly(ε-caprolactone)/multi-walled carbon nanotubes electrospun nanofibers with surface texture
The surface texture of PLA/PCL nanofibers was caused by the formation of voids and elongation in electric field. The MWCNTs reduced the sizes of PCL phase in PLA matrix.
Green Emission of Tellurite Based Glass Containing Erbium Oxide Nanoparticles
Investigation on green emission and spectral intensity of tellurite based glass containing erbium oxide NPs is one of the crucial issues. Tellurite based glass containing erbium oxide NPs with the composition of {[(TeO 2 ) 0.70 (B 2 O 3 ) 0.30 ] 0.7 (ZnO) 0.3 } 0.95 (Er 2 O 3 ) 0.05 has been prepared by using conventi…
Structural investigation of the A-site vacancy in scheelites and the luminescence behavior of two continuous solid solutions A 1–1.5x Eu x □ 0.5x WO 4 and A 0.64–0.5y Eu 0.24 Li y □ 0.12–0.5y WO 4 (A = Ca, Sr; □ = vacancy)
Scheelite compounds with Eu(3+) substitution are well-known red-phosphors. We prepared and performed a detailed structural characterization of A(1-1.5x)Eu(x)□(0.5x)WO4 and A(0.64-0.5y)Eu(0.24)Li(y)□(0.12-0.5y)WO4 (A = Ca, Sr; □ = vacancy) to confirm the A-site vacancy mechanism for charge balance when bivalent A catio…
Facile fabrication of structure-tunable bead-shaped hybrid microfibers using a Rayleigh instability guiding strategy
A method allowing the fabrication of quantum-dot or photonic crystal loaded bead-shaped hybrid microfiber arrays in a Rayleigh instability driven drop-sliding manner is demonstrated.
Building solids inside nano-space: from confined amorphous through confined solvate to confined ‘metastable’ polymorph
The nanocrystallisation of complex molecules inside mesoporous hosts and control over the resulting structure is a significant challenge. To date the largest organic molecule crystallised inside the nano-pores is a known pharmaceutical intermediate - ROY (259.3 g mol(-1)). In this work we demonstrate smart manipulatio…
Synthesis, Structural and Optical Properties of TOPO and HDA Capped Cadmium Sulphide Nanocrystals, and the Effect of Capping Ligand Concentration
The thermal decomposition of bis( N,N ‐diallyldithiocarbamato)Cd(II) in a “one‐pot” synthesis in tri‐n‐octylphosphine oxide (TOPO) and hexadecylamine (HDA) afforded CdS (TOPO‐CdS and HDA‐CdS) of varying optical properties and morphologies. The influence of the ratio of the precursor concentration to the capping molecu…