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Photochromism: Molecules and Systems Heinz Durr, Henri Bouas-Laurent
Publisher: Elsevier Science

Reversible Strong Coupling in Silver Nanoparticle Arrays Using Photochromic Molecules. Anne-Laure Co-Actions of Ambient Pressure and Gas Molecular A.. The research award from the National Science Foundation (NSF) will focus on deepening scientists' understanding of spiropyrans, a type of photochromic molecules that change color when exposed to light and heat. Photochromism.Molecules.and.Systems.pdf. The two stereo-isomers of such photochromic compounds represent the distinct states of a light-switchable digital molecular system (Fig. Two are pale yellow crystals that are not fluorescent at room temperature and exhibit photochromism (molecule 1 and 4), while the other two (molecule 2 and 3) are not photochromic , but exhibit fluorescence in the solid state. It is important for students to understand that chemical reactions can take place without the addition of other chemicals or elements to the system, which in directly observable in this isomerization. Photochromism: Molecules and Systems. Molecular Multistate Systems Formed in Two-Dimensi. Reversible intramolecular photocycloaddition of a bis(9-anthrylbutadienyl)paracyclophane – an inverse photochromic system. Heinz Durr, Henri Bouas-Laurent. (Photoactive cyclophanes 5) The 1H NMR (Figure 10 and Supporting Information p S2) and the 13C NMR spectra ( 52 distinct signals are observed, see Experimental) point to the absence of symmetry in the molecule. However, there have been, up to now, no attempts to align the larger mesoscale structures of MPS of block copolymers driven by the photoinduced alignment of photochromic molecules. In liquid crystalline systems, the molecules behave in collective fashions (cooperative manners), so the photoalignment becomes more and more effective. This was a highly challenging issue. The three-year grant also Their work will use a sophisticated instrument, the nanosecond pulsed laser/detection system, which the college acquired through a previous NSF grant that she and her colleagues received in 2011.