Publications

Crack‐Free Monolayer Graphene Interlayer for Improving Perovskite Crystallinity and Energy Level Alignment in Efficient Inverted Perovskite Solar Cells

Inverted planar perovskite solar cells (PSCs) have intrigued great promise in negative hysteresis, simple fabrication process, and flexible substrate implementation, in which the shared hole transport materiel is NiO x . However, the low‐temperature solution processing of the NiO x film is usually accompanied by defect formation, which deteriorates the perovskite quality and device performance. Meanwhile, the energy‐level offset between the NiO x and perovskite films is relatively large, limiting the interfacial charge transport. To suppress those setbacks, a defect‐free monolayer graphene sheet is transferred onto the NiO x film surface as a template for van der Waals epitaxial growth of perovskite films for the first time, leading to enhancing crystallinity with a large grain size of perovskite layer, 0.20 eV energy level offset drop, and accelerating charge transfer for the devices. Finally, the power conversion efficiency of 19.21% without hysteresis is achieved, exceeding 18.35% of the control device.

CCDC 907410: Experimental Crystal Structure Determination

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.

Review on: liquid crystalline polyazomethines polymers. Basics, syntheses and characterization

Liquid crystalline behavior of polymeric materials is of considerable current interest in the last decades, but due to many different and distinct characteristics. Polyazomethines liquid crystalline polymers have received considerable attention due to their potential applications and considered as one of the most important liquid crystalline material produced. This review gives a simple introduction to liquid crystalline materials including definition and classification. Moreover, we will focus on the syntheses and properties of liquid crystalline polyazomethines with flexible spacers or hybrid liquid crystalline polyazomethines. Furthermore, give a general overview of thermotropic, mesophoric properties and texture observation for desired liquid crystalline polyazomethines were shown in details.

Chemical sensing platform for the Zn+2 ions based on poly(o-anisidine-co-methyl anthranilate) copolymer composites and their environmental remediation in real samples

Impedimetric multifunctional Sensor Based on Rubber-CNTs-orange Dye Nanocomposite Fabricated by Rubbing-in Technology

This study presents the fabrication and investigation of rubber-carbon nanotubes-orange dye (rubber-CNTs-OD) nanocomposite based resistive and impedimetric sensors. These shockproof multifunctional sensors may be used for displacement, pressure, force, humidity and temperature sensing. Rubbing-in technology was used to fabricate the coplanar sensors on rubber substrates of dimensions 12x5x5 mm3. In the middle of the substrates, the OD-CNTs mixture (1:1 wt.%) was rubbed-in to make 3 mm wide and 12-18 μm deep active layer. On both sides of the active layer the rubber-CNTs layers were formed, that act as conductive electrodes. The length, width and the thickness of the electrodes were 4-5 mm, 5 mm and 12-18 μm, respectively. The resistance and the impedance of the sensors decreased under the effect of compressive displacement, pressure, humidity and temperature. These reductions were -43 Ω/μm to -73 Ω/μm, -3950 Ω-cm2/kgf to -6008 Ω-cm2/kgf, -187 Ω/%RH to -981 Ω/%RH and -216 Ω/°C to -270 Ω/°C, respectively. The force (in perpendicular direction to the length) causes to increase the resistance and impedance (60 Ω/gf to 300 Ω/gf). The probable reasons of the observed changes in the resistance and impedance of the sensor have been described.

Efficient microwave assisted synthesis and computational study of isoxazole Schiff base as an antibacterial agent

CCDC 1051978: Experimental Crystal Structure Determination

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.

Bile salt–bile salt interaction in mixed monolayer and mixed micelle formation

CCDC 690967: Experimental Crystal Structure Determination

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.

Metal nanoparticles supported chitosan coated carboxymethyl cellulose beads as a catalyst for the selective removal of 4-nitrophenol

2-[(3,5-Dimethyl-1-phenyl-1H-pyrazol-4-yl)methylene]indane-1,3-dione

The title compound 2-[(3,5-dimethyl-1-phenyl-1H-pyrazol-4-yl)methylene]-indane-1,3-dione (3) was synthesized in high yield by reaction of 3,5-dimethyl-1-phenyl-pyrazole-4-carbaldehyde and indane-1,3-dione in ethanol in the presence of pyridine. The structure of this new compound was confirmed by elemental analysis, IR, 1H NMR, 13C NMR and GC-MS spectral analysis.

Detection of Nebivolol Drug Based on As-grown Un-doped Silver oxide Nanoparticles prepared by a Wet-Chemical Method

The present study describes a simple and reliable I-V technique for detection of Nebivolol drug based on as-grown un-doped silver oxide nanoparticles at room conditions. Here, we have synthesized largescale and low-dimensional silver oxide nanoparticles by a wet-chemical technique using reducing agents in alkaline medium. The morphological, structural, elemental, and optical properties of nanoparticles are investigated by UV/vis. and FT-IR spectroscopy, powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and field-emission scanning electron microscopy (FESEM) etc. They were fabricated on a glassy carbon electrode (GCE) to give a fast response towards nebivolol drug. The nebivolol drug sensor also displays good sensitivity and long-term stability, and enhanced electrochemical I-V response. The calibration plot is linear (r2 = 0.9294) over the broad concentration range (5.46 nM ~ 99.3 μM). The sensitivity and detection limit are calculated from the calibration plots, which are close to 3.481 μAcm-2mM-1 and 0.91 nM (Signal-to-Noise-Ratio, SNR of 3) respectively. This method could also be employed for the determination of drugs in quality control of formulation without interference of the recipients.

Tribological Behavior of Glass/Sisal Fiber Reinforced Polyester Composites

CCDC 877314: Experimental Crystal Structure Determination

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.

CCDC 1589737: Experimental Crystal Structure Determination

Evaluating the Effect of Sewage Sludge on Bioactive Components of Momordicacharantia

Momordicacharantia L. belongs to the family Cucurbitaceae. This plant has widely been reported for use in traditional medical systems for the treatment of diabetes, rheumatism, intestinal gas and malaria. The ethnicity of M. charantiais Asia, Africa and some parts of Europe where it is considered edible. Sewage sludge, a by-product of waste water treatment plant, contains several nutrients. These nutrients are known as beneficial for the better growth and good yield of the plants. The objective of this study is to optimize soil with different ratios of sewage sludge for increased growth of bioactive components in M. charantia. The plant was grown at six places; in soil containing 20%, 40%, 60% and 80% sewage sludge ratio as well as in pure soil and in pure sewage sludge. Fruit harvesting was carried out after 75 days. Methanol extract of M. charantia (Fruit) was subjected to analysis using GC-MS. Comparative quantification of 7,11-hexadecadienal, oleic Acid and stigmasterol were carried out. It has been found that the soil containing 60% sewage sludge yielded maximum quantity of 7,11-hexadecadienal, oleic Acid and stigmasterol. Therefore, optimization of soil with different ratios of sewage sludge is carried out and 60% ratio of sewage sludge in soil is recommended for the promising growth of Momordicacharantia.

Introductory Chapter: Basic Concept of Gold Nanoparticles

Electrocatalysis of 2,6-Dinitrophenol Based on Wet-Chemically Synthesized PbO-ZnO Microstructures

In this approach, a reliable 2,6-dinitrophenol (2,6-DNP) sensor probe was developed by applying differential pulse voltammetry (DPV) using a glassy carbon electrode (GCE) decorated with a wet-chemically prepared PbO-doped ZnO microstructures’ (MSs) electro-catalyst. The nanomaterial characterizing tools such as FESEM, XPS, XRD, UV-vis., and FTIR were used for the synthesized PbO-doped ZnO MSs to evaluate in detail of their optical, structural, morphological, functional, and elemental properties. The peak currents obtained in DPV analysis of 2,6-DNP using PbO-doped ZnO MSs/GCE were plotted against the applied potential to result the calibration of 2,6-DNP sensor expressed by ip(µA) = 1.0171C(µM) + 22.312 (R2 = 0.9951; regression co-efficient). The sensitivity of the proposed 2,6-DNP sensor probe obtained from the slope of the calibration curve as well as dynamic range for 2,6-DNP detection were found as 32.1867 µAµM−1cm−2 and 3.23~16.67 µM, respectively. Besides this, the lower limit of 2,6-DNP detection was calculated by using signal/noise (S/N = 3) ratio and found as good lowest limit (2.95 ± 0.15 µM). As known from the perspective of environment and healthcare sectors, the existence of phenol and their derivatives are significantly carcinogenic and harmful which released from various industrial sources. Therefore, it is urgently required to detect by electrochemical method with doped nanostructure materials. The reproducibility as well as stability of the working electrode duration, response-time, and the analysis of real environmental-samples by applying the recovery method were measured, and found outstanding results in this investigation. A new electrochemical research approach is familiarized to the development of chemical sensor probe by using nanostructured materials as an electron sensing substrate for the environmental safety (ecological system).