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An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Conocarpus fiber is a lignocellulosic biomass rich in cellulose potentially used for producing nanocrystalline cellulose (NCC), a biomaterial extensively employed in various application fields. In the present work, different hydrolysis times of 10, 20 and 30 min were applied to chemically pre-treated Conocarpus fiber to produce CPNC1, CPNC2, and CPNC3 particles. With acid hydrolysis treatment, the yield of NCC product was successfully retained at 17-19%. Individual, rod-like shapes of NCC particles could be clearly observed under microscopy examination. From chemical composition analysis, a relatively pure cellulose compartment was produced for all NCC samples with substantial removal of lignin and hemicellulose. The physicochemical analysis proved that each nanoparticle sample possessed strong cellulose crystalline structure. For thermal analyses, the heat resistance of NCCs was gradually enhanced with the increased hydrolysis times. Therefore, the extracted NCC product from Conocarpus fiber could be a green nano-filler for developing nanocomposite material in the future.

Organic-inorganic hybrid tandem heterojunction ITO/AIPc:H2Pc/n-Si/Al photoelectric cell was fabricated by a pressing technology using preliminary vapor deposited bulk heterojunction films of mixed aluminum-phthalocyanine (AIPc) and metal free phthalocyanine (H2Pc) on the n-Si substrate and ITO coated plastic substrate. By keeping face to face the heterojunction films, the substrates (silicon and ITO coated plastic substrates) were pressed and fixed by adhesive at elevated temperature conditions. Total thickness of the AlPc and H2Pc films were equal to 340 nm. On the back side of n-Si substrate the Al film was deposited. Device architecture was the following: ITO/AlPc:H2Pc/n-Si/Al. The morphology of the organic semiconductors film was investigated by AFM. The optical properties of the AIPc-H2Pc film were studied by UV visible spectroscopy. Current Voltage characteristics were measured at dark condition and under illumination as well. Under illumination of 290 W/m(2) the values of V-oc, I-sc, FF and efficiency were equal to 0.32 V, 0.9 mA/cm(2), 0.37 and 0.22 %, respectively.

Several salt forms of 4-aminopyridine and 3,4-diaminopyridine with nitric, sulfuric, and phosphoric acids, comprising anhydrates and some hydrates, have been prepared and structurally characterized, and the role of water assessed in the latter cases. Our study has confirmed that anhydrates can be obtained even when water is present in the crystallizing solution. Protonation of the aminopyridines is consistent with ΔpKa differences. 4-Aminopyridine uniquely forms a mono cation only, with protonation at the pyridine nitrogen, whilst 3,4-diaminopyridine forms both a mono cation, again with protonation at the pyridine nitrogen, and a dication, with the second protonation at the 3-amino position. Thus, 4-aminopyridine forms a 1 : 1 nitrate anhydrate, a 1 : 1 bisulphate anhydrate, a 2 : 1 sulfate hydrate and a 1 : 1 dihydrogen phosphate hydrate. 3,4-Diaminopyridine forms a 1 : 1 nitrate anhydrate and 1 : 2 nitrate anhydrate and hydrate, 2 : 1 and 1 : 1 sulfate hydrates and a 1 : 1 dihydrogen phosphate anhydrate. Analysis of the structures found suggests that the H-bonding capability of the water O–H donors and O acceptor components have similar tendencies to N–H donors and other O acceptors. At the same time, we recognise that, whilst water molecules may occasionally be structure forming, they also act as spacers or fillers in the development of the primary H-bonded assemblies. These will mainly be controlled by the stoichiometries and H-bonding possibilities of the anion/cation components. It is also possible that, in some circumstances, the inclusion or otherwise of water in structures may be competitive with supplementary weak interactions such as C–H⋯O hydrogen bonding.

To improve the application of surfactants and polymers, the knowledge of the interaction of surfactant with polymer is essential. Therefore, the interaction of bovine serum albumin (BSA) with a typical cationic surfactant, tetradecyltrimethylammonium bromide (TTAB) was investigated using the conductivity measurement method in aq. alcohols solutions having numerous alcohols concentrations at definite temperature (310.55 K) and the same alcohols concentration at variable temperatures (300.55–323.55 K). The types and extent of interactions between BSA and TTAB have been detected from the variation of critical micelle concentration (CMC) for the studied system. The CMC has been achieved from the plots of conductivity against TTAB concentration. One CMC was achieved for the TTAB + BSA mixture in all aq. alcohols media. The CMC values experience a change with the variation of alcohol contents and temperature of the study medium. The extent of micelle ionization (α), counter ions binding (β), and thermodynamic variables such as free energy (ΔGm0), enthalpy (ΔHm0) and entropy (ΔSm0) of micellization were computed from the standard thermodynamic formulae and demonstrated in detail. The ΔGm0 values were found negative which pointed out the spontaneous attitude of the aggregation process. Here, the intrinsic enthalpy gain (ΔHm0,∗) and the compensation temperature (Tc) were also evaluated and explained. The estimated parameters reveal the presence of interaction among the studied components which is dependent on solvent composition and temperature.