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Growth, structural and optical properties of novel nonlinear optical potassium phthalate di lithium borate (KPDLiB) single crystals

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Mohanraj K. , Balasubramanian D. , Jhansi N.

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tom Vol. 38, No. 2

214--218

EN

Novel nonlinear optical semi-organic, potassium phthalate di lithium borate (KPDLiB) single crystals were successfully grown by the slow solvent evaporation technique. Good crystalline nature and an orthorhombic structure were confirmed by powder X-ray diffraction and single crystal X-ray diffraction studies. The functional groups of KPDLiB were identified using FT-IR spectrum recorded in the range of 4000 cm-1 to 450 cm-1. UV-Vis spectrum showed transmitting ability of the crystals in the entire visible region. The photoluminescence spectrum exhibited good fluorescence emission in a visible region at 384 nm, 416 nm and 578 nm. The second harmonic generation efficiency of the grown crystal was evaluated from Kurtz powder technique.

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Nanomedicine - a boon for respiratory disease management

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Balasubramanian D. , Lavanya S. J. , Girigoswami A. , Girigoswami K.

Archives of Materials Science and Engineering

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2023

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tom Vol. 119, nr 2

71--85

EN

Purpose: Respiratory diseases affect the lungs and other parts of the respiratory system. The respiratory disease affects hundreds of millions of humans, and premature death is observed in nearly four million people yearly. The major cause of the increase in this disease is the increased level of air pollution and higher tobacco usage in public places. Design/methodology/approach: We have used the search engines PubMed and Google Scholar for the keywords Respiratory diseases, Nanomaterials, diagnosis, Nanomedicine, and Target drug delivery; recent and relevant articles are selected for reviewing this paper. Findings: Nanomedicine is a recent field of research that deals with monitoring, repairing, theragnosis, and development of human biological systems at the sub-atomic level, where we utilize engineered nanodevices and nanostructures. The conventional therapeutic strategies designed for respiratory diseases have limited solubility and bioavailability. Moreover, the robust effect of the drugs led to adverse side effects due to their high dose requirement. The local delivery of therapeutic Nanoparticles (NPs) or drug-loaded nano vehicles to the lung is a safe technique for managing various respiratory tract-related diseases like chronic obstructive pulmonary diseases, cystic fibrosis, lung cancer, tuberculosis, asthma, and infection. To overcome the difficulties of conventional treatment with antibiotics and anti-inflammatory drugs, nano-enabled drug delivery, nanoformulations of drugs as well as drug nanoencapsulation have been used recently. In this mini-review, we will discuss the importance and application of nanomedicine for diagnosis, treatment and clinical research involved in the different types of respiratory diseases. Practical implications: Nanomedicine provides an alternative delivery of drugs with the help of various nanocarriers, which enhances controlled drug delivery at the pulmonary region and can be used for treating and diagnosing respiratory diseases in vivo and in vitro studies. Further experiments followed by clinical examination are warranted to prove the potential application of nanomedicine in treating respiratory disease. Originality/value: This mini-review will help the readers and budding scientists apply new methods for developing highly efficient drugs with low side effects and improved targeted sites of action.

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Synthesis, growth, and characterization of hexagonal shaped potassium-boro-phthalate (KBP) single crystal by slow solvent evaporation method for optoelectronics applications

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Mohanraj K. , Balasubramanian D. , Jhansi N.

Materials Science Poland

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2019

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tom Vol. 37, No. 4

535--540

EN

A novel nonlinear optical crystal of potassium-boro-phthalate (KBP) was grown by a slow solvent evaporation technique. The crystalline nature and cell parameters were analyzed using X-ray diffraction (XRD) study. The presence of various functional groups was determined by Fourier transform infrared spectroscopy (FT-IR) spectral analysis. The linear optical properties were determined by UV-Vis-NIR spectral analysis. The dielectric constant and dielectric loss of KBP were measured in the frequency range of 500 Hz to 5 MHz at different temperatures. The mechanical properties of KBP single crystal were studied using Vickers microhardness tester. The linear and nonlinear optical properties of the grown crystals were studied to assess its suitability for device fabrication.