Quantitative Solid-State Reactions of Amines with Carbonyl Compounds and Isothiocyanates
作者:Gerd Kaupp、Jens Schmeyers、Juergen Boy
DOI:10.1016/s0040-4020(00)00511-1
日期:2000.9
solid anhydrides to give diamides (therefrom imides) or amidic carboxylic salts or imides, with solid imides to give diamides, with solid lactones or carbonates to give functionalized carbamic esters, with polycarbonates to give degradative aminolysis, and with solid isothiocyanates to give thioureas. Diamides give imides by solid-state thermolysis or acid catalysis. Various double, two-step, 3-cascade
Tuning saccharide selectivity in modular fluorescent sensors
作者:Susumu Arimori、Giuseppe A. Consiglio、Marcus D. Phillips、Tony D. James
DOI:10.1016/s0040-4039(03)00942-0
日期:2003.6
Five modular photoinduced electron-transfer (PET) sensors bearing two phenylboronic acid receptors with different fluorophores have been prepared. The sensors’ interaction with saccharides was assessed via fluorescence spectroscopy. It was shown that monosaccharide selectivity is influenced by the choice of fluorescent moiety.
The organic NLO Schiff base of N-(9-Anthrylmethylidene) methylamine was synthesized by condensation process. The material was characterized through Powder XRD, FT-IR, and Raman techniques. The various planes of reflection are identified from the Powder XRD pattern. The formation of Schiff base is confirmed through FT-IR and Raman analysis. The intra molecular charge transfer interaction and the existence of the first-order molecular hyperpolarizability (beta) are identified from the red shift of the UV-Vis analysis. The structure of the molecule was optimized by density functional theory (DFT) using B3LYP method with 6-31G basis set. The NBO analysis is used to interpret the delocalization. The dipole moment and first hyperpolarizability values were also computed by HF/6-31G. These values indicate that the compound is a good candidate with nonlinear optical properties. This is the first time report on the existence of a second harmonic generation (SHG), chi(2), efficiency that has been identified by Powder Kurtz-Perry method. (C) 2013 Elsevier B.V. All rights reserved.