New Schiff base salts as sources of blue and green light in the solid state: the role of the anion and protonation
文献信息
Tomasz Sierański, Marcin Świątkowski, Agata Trzęsowska-Kruszyńska
A new polymorf of Schiff base (N-(4′-methoxybenzylidene)-4-aminobenzoic acid) and five of its distinct salts (chloride, bromide, nitrate, hydrosulfate and dihydrophosphate) were designed and synthesized. Detailed examinations were conducted to determine the structure and spectral properties of these compounds, employing methods like X-ray diffraction, as well as IR, UV-Vis and fluorescence spectroscopy. Interestingly, all the synthesized Schiff base salts displayed fluorescence when in solid state. However, the intensity of this fluorescence was found to differ, depending on the type of anion present within the structure. This result provides evidence that a strategy similar to supramolecular complexation can effectively be used to adjust the emission wavelength and control the intensity of fluorescence in the resulting solid materials.
期刊推荐

Analyst

Journal of the American Chemical Society

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Cement and Concrete Research

Chemistry of Heterocyclic Compounds

Bulletin of the Chemical Society of Japan

Anti-Corrosion Methods and Materials

Chemistry of Natural Compounds

Advances in Colloid and Interface Science

Biopolymers
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CrystEngComm is the forum for the design and understanding of crystalline materials. We welcome studies on the investigation of molecular behaviour within crystals, control of nucleation and crystal growth, engineering of crystal structures, and construction of crystalline materials with tuneable properties and functions. We publish hypothesis-driven research into… how crystal design affects thermodynamics, phase transitional behaviours, polymorphism, morphology control, solid state reactivity (crystal-crystal solution-crystal, and gas-crystal reactions), optoelectronics, ferroelectric materials, non-linear optics, molecular and bulk magnetism, conductivity and quantum computing, catalysis, absorption and desorption, and mechanical properties. Using Techniques and methods including… Single crystal and powder X-ray, electron, and neutron diffraction, solid-state spectroscopy, spectrometry, and microscopy, modelling and data mining, and empirical, semi-empirical and ab-initio theoretical evaluations. On crystalline and solid-state materials. We particularly welcome work on MOFs, coordination polymers, nanocrystals, host-guest and multi-component molecular materials. We also accept work on peptides and liquid crystals. All papers should involve the use or development of a design or optimisation strategy. Routine structural reports or crystal morphology descriptions, even when combined with an analysis of properties or potential applications, are generally considered to be outside the scope of the journal and are unlikely to be accepted.