69704-44-5Relevant academic research and scientific papers
SWITCHABLE HYDROPHILICITY SOLVENTS AND METHODS OF USE THEREOF
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Page/Page column 82, (2011/05/11)
A solvent that reversibly converts from a hydrophobic liquid form to hydrophilic liquid form upon contact with water and a selected trigger, e.g., contact with CO2, is described. The hydrophilic liquid form is readily converted back to the hydr
Quenching of Aromatic Hydrocarbon Fluorescence by α,ω-Diamino-alkanes
Davidson, R. Stephen,Whelan, Terence D.
, p. 241 - 246 (2007/10/02)
α,ω-Bisdiethylamino-, α,ω-dipyrrolidino-, and α,ω-dipiperidino-alkanes quench the fluorescence of aromatic hydrocarbons in cyclohexane solution.The efficiency of quenching is dependent upon the length of the chain linking the two nirogen atoms.For chains containing 6 methylene groups linking the nitrogen atoms, quenching is proposed to occur via a multi-collisional process.These diamines are more effective quenchers than their monoamine counterparts.The effect of chain length is barely noticeable when solvents more polar than cyclohexane are used. α,ω-Bis-(N-methylanilino)-alkanes are efficient quenchers of aromatic hydrocarbon fluorescence, but the efficiency does not depend on the length of the linking chain.The quantum yield of exciplex fluorescence is attenuated when the linking chain contains two or three methylene groups.
