Photoinduced Dynamics of Bis-dipyrrinato-palladium(II) and Porphodimethenato-palladium(II) Complexes: Governing Near Infrared Phosphorescence by Structural Restriction

Although superficially similar, the bis-dipyrrinato-palladium­(II) complex <b>1</b> and the bridged porphodimethenato-palladium­(II) complex <b>2</b> possess dramatically different structures in the ground state (proved by X-ray structure analysis) and in the singlet and triplet excited states (calculated by density functional theory methods). While complex <b>2</b> is rather rigid, complex <b>1</b> undergoes a major structural reorganization in the excited state to yield a disphenoidal (seesaw) triplet state. The dynamics of the excited states were probed by transient absorption spectroscopy with femtosecond and nanosecond time resolution and with fluorescence upconversion and yield intersystem crossing rate constants of ca. (13–16 ps)⁻¹. The observation of significant near infrared phosphorescence in complex <b>2</b> but the absence of any emission in complex <b>1</b> in fluid solution could be rationalized by the structural reorganization of <b>1</b> which results in a nonemissive triplet metal centered state

Acute Osteomyelitis of the Humerus mimicking Malignancy: Streptococcus pneumoniae as Exceptional Pathogen in an Immunocompetent Adult

Background Chronic osteomyelitis due to direct bone trauma or vascular insufficiency is a frequent problem in orthopaedic surgery. In contrast, acute haematogenous osteomyelitis represents a rare entity that almost exclusively affects prepubescent children or immunodeficient adults. Case Presentation In this article, we report the case of acute pneumococcal osteomyelitis of the humerus in an immunocompetent and otherwise healthy 44-year-old male patient presenting with minor inflammation signs and misleading clinical features. Conclusions The diagnosis had to be confirmed by open biopsy which allowed the initiation of a targeted therapy. A case of pneumococcal osteomyelitis of a long bone, lacking predisposing factors or trauma, is unique in adults and has not been reported previously

Kolmogorov-Smirnov like test for time-frequency Fourier spectrogram analysis in LISA Pathfinder

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