pH and Hammett acidity dependences of the blue fluorescences of the quinolinium ion and some related species indicate that the thermally relaxed lLb and'L, states of the quinolinium ion are degenerate and that fluorescence ...

Fluorescence, excitation, and emission spectra of some benzo[a]pyrene diols and diol epoxides in aqueous and non-aqueous media have been studied and ground- and excited-state dissociation constants have been determined. ...

The reaction of bis(2,4-dinitrophenyl) oxalate and hydrogen peroxide yields an excited-state product tht luminesces with great intensity at ca. 400 nm. The weak intensity is enhanced by some agents tht normally do not ...

The pre-chemiluminescent hydrogen peroxide-bis(2,4-dinitrophenyl) oxalate reaction has been studied in order to understand better its role in peroxyoxalate chemiluminescence. The reaction is shown to be first order in each ...

Objectives. To examine the Coach Model for recruiting minority students for the pharmaceutical and biomedical sciences at the University of Georgia College of Pharmacy. The long-term goal is to establish the University of ...

Simultaenous ultraviolet absorbance measurements at 240 and 260 nm are used to quantify DNPO and its principle degradation product 2,4-dinitrophenol. The stability of DNPO was determined in various water acetonitrile ...

The use of lucigenin-enhanced chemiluminescence (CL) for the detection of superoxide (O2·−) has grown in popularity due to an increased demand for a simple and specific system capable of measuring superoxide. In this study ...

The occurrence of the second absorption band of singly protonated 9-aminoacridine, which arises from an acridinium ring-localized transition, at anomalously short wavelength indicates the disruption of the aromaticity of ...

The absorption and fluorescence spectra of quinacrine and its dealkylated derivative, 2-methoxy-6-chloro-9-aminoacridine, were studied as a function of pH and Hammett acidity. The relative stability and high quantum yield ...