01853nas a2200265   4500008004100000022001400041245011100055210006900166260006900235300001000304490000800314520088600322653002701208653005001235653001501285653001801300653002201318653001501340100001701355700001801372700002701390700001901417700002001436856013101456       2011                        eng d  a1011-134400aFluorescence resonance energy transfer from tryptophan to folic acid in micellar media and deionised water0 aFluorescence resonance energy transfer from tryptophan to folic   aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcAPR  a16-210 v1033 a<p>The fluorescence resonance energy transfer (FRET) from tryptophan (Trp) to folic acid (FA) in aqueous sodiumdodecyl sulphate, cetyltrimethyl ammonium bromide, and Brij-35 as well as deionised water was investigated using steady state and time resolved fluorescence techniques. The data obtained from steady state fluorescence spectral studies and time resolved measurement indicated that the FRET from Trp to FA occurred most effectively in aqueous sodium dodecyl sulphate micellar solutions. The distance between Trp and FA were evaluated. Binding constant, number of binding sites and thermodynamic parameters were determined for Trp-FA interactions in deionised water. The values of the thermodynamic parameters suggest that the hydrophobic forces and hydrogen bonding are the key interacting forces between Trp-FA interaction. (C) 2011 Elsevier B.V. All rights reserved.</p>10aFluorescence quenching10aFluorescence resonance energy transfer (FRET)10aFolic acid10aFoster theory10aStern-Volmer plot10aTryptophan1 aMote, U., S.1 aPatil, S., R.1 aBhosale, Siddharth, H.1 aHan, Sung-Hwan1 aKolekar, G., B.  uhttps://library.ncl.res.in/content/fluorescence-resonance-energy-transfer-tryptophan-folic-acid-micellar-media-and-deionised-001887nas a2200205   4500008004100000245018500041210006900226260000800295300002300303490000700326520108700333100001901420700001901439700001701458700001801475700002001493700002001513700001901533856012901552       2019                        eng d00aOne-pot three-component synthesis and photophysical properties of highly fluorescent novel 4-alkyl-3-aryl-2,6-dicyanoanilines by using tris(hydroxymethyl)aminomethane as a catalyst0 aOnepot threecomponent synthesis and photophysical properties of   cFEB  aArticle No: 1001720 v193 aNovel 4-alkyl-3-aryl-2,6-dicyanoanilines were synthesized by a multi-component one-step reaction of aromatic aldehyde, malononitrile and aliphatic aldehyde using tris(hydroxymethyl)aminomethane (THAM) as a catalyst under microwave (MW) irradiation or conventional heating. The optimized reaction condition involved use of 2.5 equivalents of THAM under MW irradiation at 140 W using 20% MW power for 5 min or conventional heating at 80 °C for 8 h in dimethylformamide. The photophysical properties including λmax, quantum yield and Stokes’ shifts of newly synthesized molecules were studied. All compounds exhibited quantum yield in the range of 0.04–0.52 with respect to standard quinine sulphate having quantum yield 0.54. The Stokes’ shifts of all compounds were found in the range of 41–105 nm. The current strategy provides operationally simple protocol using THAM as a catalyst to synthesize 4-alkyl-3-aryl-2,6-dicyanoanilines with diverse structural features to make them available for exploration of their photophysical as well as biological applications.1 aKudale, A., S.1 aKamble, S., B.1 aGore, A., H.1 aPisal, M., M.1 aSalokhe, A., T.1 aKolekar, G., B.1 aHelavi, V., B.  uhttps://library.ncl.res.in/content/one-pot-three-component-synthesis-and-photophysical-properties-highly-fluorescent-novel-4