Determination of nafcillin by room temperature phosphorescence

Determination of 4-Methylpropranolol in Cerebrospinal Fluid, Serum, and Urine by Nonprotected Fluid Room-Temperature Phosphorescence Using Simplex Optimization

“…The phosphorescence spectrum presents a band with a characteristic emission of wavelength 537 nm corresponding to the transition from the first excited triplet state to the singlet ground state. This spectrum is the result of the naphthalene moiety; this is the reason similar emission spectra of phosphorescence also appear in compounds derived from naphthalene such as naphtoxylactic acid (14), nafronyl (15), nafcillin (16), and naftopidil (17). The large difference between both luminescence emission spectra is 7420 cm Ϫ1 , which gives an idea of the energy that is lost in a radiationless mechanism between the first excited singlet and the first excited triplet state.…”

Direct determination of naftopidil by non-protected fluid room temperature phosphorescence

“…The phosphorescence spectrum presents a band with two characteristic peaks at 494 and 526 nm, corresponding to the transition from the first excited triplet state to the singlet ground state; this spectrum is the result of the naphthalene moiety. This is the reason why similar emission spectra of phosphorescence also appear for compounds derived from naphthalene such as nafronyl, naphthoxylactic acid nafronyl10 and nafcillin 11. The fluorescence and phosphorescence spectra show different characteristic emission wavelengths.…”

“…This is the reason why similar emission spectra of phosphorescence also appear for compounds derived from naphthalene such as nafronyl, naphthoxylactic acid nafronyl 10 and nafcillin. 11 The fluorescence and phosphorescence spectra show different characteristic emission wavelengths. This gives an idea of the non-radiant energy that is lost in the intersystem crossing, 2.05 3 10 219 J, and the subsequent vibrational relaxation to the lowest vibrational level of the excited triplet state.…”

Assessment of molecularly imprinted sol–gel materials for selective room temperature phosphorescence recognition of nafcillin

“…septicaemia, osteomyelitis, pneumonia and endocarditis). Nafcillin has a reasonable phosphorescence quantum yield at room temperature as demonstrated by the possibility to determine it by RTP in a protective medium, such as surfactant micelles [19] or even in fluid solution in absence of protective medium [20]. Because room temperature phosphorimetry affords much greater selectivity than other luminescence techniques, a set of nafcillin imprinted sol-gel materials were examined for their ability to generate specific nafcillin room temperature phosphorescence response in model solutions.…”