Se-Jung Roh

1H and 13C NMR assignments for new heterocyclic TAM leuco dyes, (2Z,2′E)-2,2′-(2-phenyl propane-1,3-diylidene) bis(1,3,3-trimethylindoline) derivatives. Part II†

The 1H and 13C NMR spectra of the novel heterocyclic Leuco‐TAM dyes, (2Z, 2′E)‐2,2′‐(2‐phenyl propane‐1,3‐diylidene) bis(1,3,3‐trimethylindoline) derivatives 1–4 as precursors of triarylmethane (TAM)+ (Malachite Green FB‐analog) dyes were completely assigned by 1D and 2D NMR experiments, including DEPT, COSY, HSQC, HMBC, and NOESY. Especially, the diastereotopic gem‐dimethyl protons at the C3 and C3′ positions of the FB rings were definitively assigned. The (Z,E) isomers adopt the energetically favored three‐bladed propeller conformation in solution. Copyright

Novel Fischer’s Base Analogous of Leuco-TAM and TAM+ Dyes – Synthesis and Spectroscopic Characterization

The development of material engineering is accompanied by a growing demand for routine, nondestructive techniques for material and product testing. These techniques are to be used for the assessment of chemical and physical structure of new materials as well as for a systematic control of their manufacturing processes. Nowadays nanotechnologies fulfill a particular role in creating new materials of nanometric dimensions. The products of nanotechnology are made in various forms, mostly such as coatings and fibers. Coatings are of great practical importance while deposited on conventional substrates, such as metals, ceramics and polymers to impart new functions, e.g. anticorrosive, reflexive, sensory properties, etc., to them. Coatings are mostly made of polymers and hence their functional properties and durability mainly depend on polymer chemical and supermolecular structure. The current control tests of the chemical properties and supermolecular characteristic of materials are carried out with the use of IR absorption spectroscopy. Currently, these are dedicated to test the surface of materials. This paper concerns the spectroscopic technique FTIR used to test the surface of polymeric materials and coatings formed on polymeric substrates. The general characteristics, advantages and drawbacks of this technique in testing polymer surfaces have been presented.© 2012 Keum et al., licensee InTech. This is an open access chapter distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Novel Fischer’s Base Analogous of Leuco-TAM and TAM Dyes – Synthesis and Spectroscopic Characterization