Crystal engineering has recently emerged as a method of choice for the design and the construction of both organic and metal-organic functional materials. Solid-state synthesis, of the most commonly studied aspects of crystal engineering, has been shown to provide access to molecular targets that are hardly obtainable using principles of conventional (i.e. solution-based) organic synthesis. Rea...

Reduced graphene oxide/poly (ionic liquid) functionalized nano-fibrillated cellulose composite paper with significant enhancement of mechanical strength, ductility, toughness and hydrophobicity was fabricated by vacuum filtration assisted assembly.

We present a multi-scale simulation method for modeling crystal growth in the presence of polymer excipients. The method includes a coarse-grained (CG) model for small molecules of known crystal structure whose force field is obtained using structural properties from atomistic simulations. This CG model is capable of stabilizing the molecular crystal structure and capturing the crystal growth f...

A superhydrophobic coating on wood can effectively improve the hydrophobicity and service life of wood. In this study, an Al nano-coating was constructed transversal section poplar by magnetron sputtering based glow-discharge plasma. The structure, microscopic morphology, surface elements, hydrophobic properties were characterized tested. When coated for 20 s, water contact angle sample reach 1...

Development of components that can form large molecular aggregates through non–covalent interactions, in nano size structures, has been an active area of research. In current study, a nano-sized Pb(II) coordination polymer, {[Pb(pydc)(pydc.H2)(H2O)2]2}n (1), where [pydc.H2= 2,6-pyridinedicarboxylic acid), wer...

Drug-loaded mono- and multilayer composite membranes were prepared. The composites, based on nano-fibrillated bacterial cellulose, nano-powdered polyvinyl alcohol, all biocompatible biodegradable, characterized in terms of basic factors related to drug diffusivity mass transfer: swelling ability, water solubility, vapor permeability. Tetracycline hydrochloride was used this case as model. Drug ...

Complete cellulose degradation is the first step in the use of biomass as a source of renewable energy. To this end, the engineering of novel cellulase activity, the activity responsible for the hydrolysis of the beta-1,4-glycosidic bonds in cellulose, is a topic of great interest. The high-resolution X-ray crystal structure of a multidomain endoglucanase from Clostridium cellulolyticum has bee...

We investigated the adsorption and chemical conjugation of avidin and its deglycosylated form, neutravidin, on films of regenerated and nanofibrillar cellulose. The dynamics and extent of biomolecular attachment were monitored in situ by quartz crystal microbalance microgravimetry and ex situ via surface analyses with atomic force microscopy and X-ray photoelectron spectroscopy. The installatio...

BACKGROUND The efficiency of enzymatic hydrolysis is reduced by the structural properties of cellulose. Although efforts have been made to explain the mechanism of enzymatic hydrolysis of cellulose by considering the interaction of cellulolytic enzymes with cellulose or the changes in the structure of cellulose during enzymatic hydrolysis, the process of cellulose hydrolysis is not yet fully un...

Several methods have been proposed and tried for strain analysis of a crystal on nano-scale. Diffractometry such as nano-beam diffraction [1] and convergent-beam electron diffraction [2][3], and the phase imaging methods such as dark-filed electron holography [4] and high-resolution electron microscopy [5] have been applied to this issue. In scanning transmission electron microscopy (STEM), whe...