A5036206783- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Magnetism in coordination complexes
- Lanthanide and Transition Metal Complexes
- Electron Spin Resonance Studies
- Magnetic properties of thin films
- Pituitary Gland Disorders and Treatments
- Systemic Lupus Erythematosus Research
- Magneto-Optical Properties and Applications
- Diabetes and associated disorders
- Theoretical and Computational Physics
- Diagnosis and treatment of tuberculosis
- Neuroendocrine Tumor Research Advances
- Hormonal Regulation and Hypertension
- Urticaria and Related Conditions
- Monoclonal and Polyclonal Antibodies Research
- Celiac Disease Research and Management
- Organic and Molecular Conductors Research
- Adrenal Hormones and Disorders
- Fibromyalgia and Chronic Fatigue Syndrome Research
- Vascular Malformations and Hemangiomas
- Rheumatoid Arthritis Research and Therapies
- T-cell and B-cell Immunology
- Mycobacterium research and diagnosis
- Intraperitoneal and Appendiceal Malignancies
Hopital Universitaire Hedi Chaker
2009-2024
Groupe d’Étude de la Matière Condensée
2018-2022
Université Paris-Saclay
2018-2021
Centre National de la Recherche Scientifique
2018-2021
University of Sfax
2006-2021
Université de Versailles Saint-Quentin-en-Yvelines
2018-2021
Canadian Nautical Research Society
2019
Hopital Universitaire Habib Bourguiba
2009-2016
Multifunctional mononuclear iron(<sc>ii</sc>) complex coordinated with six phosphorescent ligands exhibiting correlated spin-crossover transition and enhanced fluorescence.
We report syntheses, crystal and electronic structures, characterization of three new hybrid organic-inorganic halides (R)ZnBr3(DMSO), (R)2CdBr4·DMSO, (R)CdI3(DMSO) (where (R) = C6(CH3)5CH2N(CH3)3, DMSO dimethyl sulfoxide). The compounds can be conveniently prepared as single crystals bulk polycrystalline powders using a DMSO-methanol solvent system. On the basis single-crystal X-ray diffraction results carried out at room temperature 100 K, all have zero-dimensional (0D) structures...
To analyse prospectively the diagnostic sensitivity and specificity as well clinical relevance of ribosomal P (anti-P) autoantibodies in a large cohort SLE patients.The anti-P were evaluated serum 200 Tunisian patients at disease onset 130 various control subjects by sensitive immunodot assay. A complete laboratory evaluation examination performed each patient. During follow-up, regularly monitored for parameters. Global activity was measured ECLAM.The testing 23.5 98.4%, respectively. The...
We investigated by means of optical microscopy (OM) the spatiotemporal features thermo-induced spin transition [Fe(2-pytrz)2{Pd(CN)4}]·3H2O (1) (2-pytrz = 4-(2-pyridyl)-1,2,4,4H-triazole) single crystals having two different shapes (triangle and rectangle). While magnetic calorimetric measurements, performed on a polycrystalline material, showed respective average heating cooling temperatures (Tdown1/2 ∼ 152 K, Tup1/2 154 K) 160.0 163.5 K), OM studies unique crystal revealed significantly...
The low-temperature photoinduced effects of the spin-crossover $[{\mathrm{Fe}{(2\text{\ensuremath{-}}\mathrm{pytrz})}_{2}[\mathrm{Pd}{(\mathrm{CN})}_{4}]}].3{\mathrm{H}}_{2}\mathrm{O}$ single crystal have been investigated by means a cryogenic optical microscopy technique down to 10 K from which imaging and quantitative analysis spatiotemporal transformation are derived. magnetic investigations revealed that this compound exhibits an incomplete spin transition between full high-spin (HS)...
We have investigated by means of optical microscopy and magnetic measurements the first-order thermal spin transition [{Fe(NCSe)(py)2}2(m-bpypz)] spin-crossover compound under various shining intensities, far from light-induced spin-state trapping region. found evidence photo-heating effects on thermally-induced hysteretic response this material, thus causing shift hysteresis to lower temperature regions. The experimental results are discussed in terms apparent crystal analyzed theoretically...
Elastic modeling of spin-crossover materials has boomed remarkably these last years. Among models, the electro-elastic model combining spin and lattice degrees freedom showed good abilities fair description thermodynamics solids. In present work, we explore a new treatment this based on homogeneous spacing with well separate relaxation timescales for state freedom. This is analogous to Born–Oppenheimer approximation allows analytic elastic part model, thus simplifying considerably...
We have investigated by optical microscopy the thermal spin transition of a single crystal spin-crossover compound [{Fe(NCSe)(py)2}2(m-bpypz)] under various shining intensities, far from light-induced spin-state trapping region. found evidence photoheating on thermally induced hysteretic response crystal, leading to control temperature and hysteresis width as function light intensity. The inspections spatiotemporal behaviors transition, heating cooling, also evidenced significant dependence...
Optical microscopy technique is used to investigate the thermal and spatio-temporal properties of spin-crossover single crystal [Fe(2-pytrz) 2 {Pt(CN) 4 }]·3H O, which exhibits a first-order spin transition from full high-spin (HS) state at high temperature an intermediate, low-spin (HS-LS) state, below 153 K, where only one two crystallographic Fe(II) centers switches HS HS-LS state. In comparison with crystals undergoing complete transition, present transformation involves smaller volume...
The thermal spin transition and the photo-induced high-spin → low-spin relaxation of prototypical [Fe(ptz)6](BF4)2 spin-crossover compound (ptz = 1-propyltetrazole) diluted in isostructural ruthenium host lattice [Ru(ptz)6](BF4)2, which stabilizes Fe(II) state, have been investigated. We demonstrate presence a crystallographic phase around 145 K (i.e. from high-temperature ordered to low-temperature disordered phase) upon slow cooling room temperature. This is decoupled transition. A...
We evidenced by means of optical microscopy the long-range character interactions acting in spin crossover (SCO) single crystals through a study density (OD) variation during transition between high-spin (HS) and low-spin (LS) states. The time evolution local OD, measured four crystals, revealed existence precursor phenomena, which are manifest appearance significant changes OD probed area well before arrival front interface case HS to LS after passage transition. These two effects...
Switchable Spin crossover (SCO) materials have been studied for many years their promising applications as sensors of pressure, memories, and molecular switches. Recent optical microscopy studies demonstrated that, in cooperative SCO single crystals, the first-order spin transition proceeds through nucleation a macroscopic domain with clear elastic high-spin/low-spin interface that propagates over whole crystal, very small velocities, measured range: 2–10 µm·s−1. The present theoretical work...
<h3>Background:</h3> Rheumatoid arthritis (RA) is a systemic autoimmune inflammatory disease characterised by pain in peripheral joints accompanied functional impairment. Fibromyalgia (FM) well-known comorbidity RA, syndrome characterized chronic diffuse pain, fatigue, poor sleep, and other somatic symptoms. Screening of FM RA patients may change the physical evaluation degree treatment. <h3>Objectives:</h3> The aim this study to evaluate performance Rapid Tool (FIRST) self-questionnaire for...
<h3>Background:</h3> Digestive metastases to the bones represent an advanced stage of cancer, commonly originating from organs like colon, stomach, pancreas, liver, or biliary system. Patients with these often exhibit diverse symptoms, including localized diffuse pain. Knowledge their epidemiology and clinical characteristics is vital for effective patient management. <h3>Objectives:</h3> Describe epidemioclinical features patients admitted Sfax Rheumatology Department bone digestive origin....
<h3>Background:</h3> In patients with Rheumatoid Arthritis (RA), Sleep disturbance is one of the most common psychological symptoms, including difficulty falling or staying asleep, non-restorative sleep, and increased daytime sleepiness fatigue. <h3>Objectives:</h3> The aim our study to evaluate sleep disorders in RA determine associated factors. <h3>Methods:</h3> This a descriptive analytical cross-sectional RA. We collected epidemiological, clinical, serological treatment data. used...
Introduction Osteoporosis (OP) is characterized by low bone mass and microarchitectural deterioration of tissue. Recent studies have suggested that sleep may significantly influence the pathophysiology OP. Objectives In present study, we aimed to determine disorders among women with post-menopausal Methods A cross-sectional study was conducted between January June 2023. Patients OP who visited rheumatology department in a university hospital Tunisia were interviewed. The Pittsburgh Sleep...