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Rajamohan Rajaram,Viswalingam Muthusamy,이용록,Prabu Samikannu,Sivakumar Krishnamoorthy 한국화학공학회 2023 Korean Journal of Chemical Engineering Vol.40 No.7
In the liquid state, UV-visible and fluorescence spectroscopy was used to examine the inclusion complexes of nortriptyline (NP) and β-cyclodextrin (β-CD). The degree of inclusion complexation causes NP’s absorbance and fluorescence intensity to be significantly increased during interaction with β-CD. The binding constant was determined by UV-VIS and fluorescence spectroscopy, and the results indicated a 1:1 stoichiometry for the inclusion complex at 303 K. Complexation is a spontaneous and exothermic process, as determined by Gibbs’s free energy change. To produce solid inclusion complexes (ICs), mixing and co-precipitation were used, which were then characterized using Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), X-ray powder diffraction (XRD), and thermogravimetric analysis/differential scanning calorimetry (TGA/DSC). According to molecular docking studies, the aromatic ring of the NP does not penetrate the secondary hydroxyl rim of the β-CD cavity, but the aliphatic part of the NP trapped in the cavity is more thermodynamically advantageous. NP and NP: β-CD-ICs were screened for in vitro cytotoxicity on Michigan Cancer Foundation-7 (MCF-7) cell line using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay, and the results showed that the cytotoxicity was not affected by creating an ICs.
Esakkimuthu Shanmugasundaram,Chandramohan Govindasamy,Muhammad Ibrar Khan,Vigneshkumar Ganesan,Vimalasruthi Narayanan,Kannan Vellaisamy,Rajaram Rajamohan,Stalin Thambusamy 한국탄소학회 2023 Carbon Letters Vol.33 No.7
Carbon nanofibers (CNFs) are promising materials for the construction of energy devices, particularly organic solar cells. In the electrospinning process, polyacrylonitrile (PAN) has been utilized to generate nanofibers, which is the simplest and most popular method of creating carbon nanofibers (CNFs) followed by carbonization. The CNFs are coated on stainless steel (SS) plates and involve an electropolymerization process. The prepared Cu, CNF, CNF–Cu, PANI, PANI–Cu, CNF–PANI, and CNF–PANI–Cu electrode materials’ electrical conductivity was evaluated using cyclic voltammetry (CV) technique in 1 M H2SO4 electrolyte solution. Compared to others, the CNF–PANI–Cu electrode has higher conductivity that range is 3.0 mA. Moreover, the PANI, CNF–PANI, and CNF–PANI–Cu are coated on FTO plates and characterized for their optical properties (absorbance, transmittance, and emission) and electrical properties (CV and Impedance) for organic solar cell application. The functional groups, and morphology-average roughness of the electrode materials found by FT–IR, XRD, XPS, SEM, and TGA exhibit a strong correlation with each other. Finally, the electrode materials that have been characterized serve to support and act as the nature of the hole transport for organic solar cells.