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-β, β-β' trifused porphyrins: synthesis, spectral, electrochemical and DFT studies and their femtosecond third-order nonlinear optical properties.
Dalton Trans
January 2025
Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247667, India.
-β, β-β' trifused porphyrins incorporating two distinct active methylene groups (MN = malononitrile and IND = 1,3-indanedione) and their corresponding metal complexes with Cu(II) and Zn(II) have been synthesized with good to excellent yields and characterized by various spectroscopic techniques and spectrometric methods. Single crystal X-ray analysis of the Zn(II) complex ZnTFPMB(MN) (where TFP = trifused porphyrin and MB = mono benzo) revealed a nonplanar 'armchair' type conformation with a twist angle of 24.10°.
View Article and Find Full Text PDFDefect Migration and Phase Transformations in Two-Dimensional Iron Chloride inside Bilayer Graphene.
ACS Nano
January 2025
The Institute of Scientific and Industrial Research (ISIR-SANKEN), Osaka University, Osaka 567-0047, Japan.
The intercalation of metal chlorides, and particularly iron chlorides, into graphitic carbon structures has recently received lots of attention, as it can not only protect this two-dimensional (2D) magnetic system from the effects of the environment but also substantially alter the magnetic, electronic, and optical properties of both the intercalant and host material. At the same time, intercalation can result in the formation of structural defects or defects can appear under external stimuli, which can affect materials performance. These aspects have received so far little attention in dedicated experiments.
View Article and Find Full Text PDFUnusual Manifestation of Vitamin K Deficiency, Nodular Purpura: A Case Series.
Indian Dermatol Online J
December 2024
Department of Dermatology, St John's Medical College, Bangalore, Karnataka, India.
Vitamin K deficiency is a common entity in infancy characterized by bleeding from various sites, intracranial bleeding being the most commonly reported feature. Nodular purpura is an uncommon manifestation of vitamin K deficiency in infancy with a few reported cases in literature. We present four cases of infants presenting with nodular purpura as a manifestation of late-onset vitamin K deficiency bleeding (VKDB).
View Article and Find Full Text PDFDeer-Tick Tag on the Shaft of the Penis: An Unusual Presentation.
Indian Dermatol Online J
September 2024
Department of Dermatology and Venereology, AIIMS, Gorakhpur, Uttar Pradesh, India.
Nasopharyngeal carcinoma (NPC) is an epithelial malignancy commonly associated with Epstein-Barr virus infection. While bone, liver, and lung metastases are well-documented, central nervous system (CNS) involvement, particularly spinal and meningeal metastases, is extremely rare. We present a 41-year-old male with nasal obstruction and diplopia, diagnosed with locally advanced NPC.
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