Detail of "1806-34-4"

Reference

Measurement of the absolute radioluminescence output of a plastic scintillator excited by cobalt-60 g-rays

Measurement of the absolute radioluminescence output of a plastic scintillator excited by cobalt-60 g-rays. Andreeshchev, E. A.; Kilin, S. F. (USSR). Zh. Prikl. Spektrosk., 29(1), 56-61 (Russian) 1978. CODEN: ZPSBAX. ISSN: 0514-7506. DOCUMENT TYPE: Journal CA Section: 71 (Nuclear Technology) Section cross-reference(s): 73 The abs. output of plastic scintillator radioluminescence was measured by comparing its luminosity to that of Cherenkov radiators consisting of H2O and PhBr by exciting them with the same source of g-rays under identical conditions. The measurement method and the device are described and the error is estd. The output is 2.4 ± 0.2% for a std. compn. of plastic scintillator (polystyrene [9003-53-6], p-terphenyl [92-94-4], and POPOP [1806-34-4]).

Fluorescence studies of the microviscosity of polymer solutions

Fluorescence studies of the microviscosity of polymer solutions. 1. Microviscosity of polymerizing media. Neilson, R. D. M.; Soutar, I.; Steedman, W. (Heriot-Watt Univ., Edinburgh, Scot.). Macromolecules, 10(6), 1193-6 (English) 1977. CODEN: MAMOBX. DOCUMENT TYPE: Journal CA Section: 35 (Synthetic High Polymers) The microviscosity sensed by a fluorescent probe in a macromol. soln. is a function of the mol. dimension of the kinetic moiety. No stepwise increases in local viscosity over the total polymer concn. range were obsd. for any of the mol. probes investigated. This result might be due to the greater homogeneity obtained in the polymg. medium compared with systems involving mixing of concd. polymer with solvent/fluor blends. Inhomogeneity in the latter case might lead to an effective partitioning of fluor in the solvent with regions of the mixt. These conculsions are based on fluorescence studies of changes in microviscosity during polymn. of vinyltoluene [25013-15-4] in the presence of 2,5-diphenyloxazole [92-71-7], 1,4-bis[2-(5-phenyloxazolyl)]benzene [1806-34-4], 1,1,4,4-tetraphenylbutadiene [1450-63-1], or 9-methylanthracene [779-02-2].