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Back Cover: Solid‐State Phosphorescence of trans ‐Bis(salicylaldiminato)platinum(II) Complexes Bearing Long Alkyl Chains: Morphology Control towards Intense Emission (Chem. Eur. J. 29/2013)
Author(s) -
Komiya Naruyoshi,
Itami Nao,
Naota Takeshi
Publication year - 2013
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201390108
Subject(s) - phosphorescence , stacking , alkyl , solid state , materials science , crystallography , platinum , crystal (programming language) , single crystal , morphology (biology) , photochemistry , crystal structure , crystal engineering , chemistry , supramolecular chemistry , organic chemistry , optics , catalysis , physics , computer science , fluorescence , programming language , biology , genetics
Morphology control of trans ‐bis(salicylaldiminato)Pt II complexes bearing long alkyl chains can change typically non‐emissive crystals into highly emissive crystals. Crystals prepared using “kinetic” conditions, including rapid cooling, high concentrations and poor solvents, emit intense yellow phosphorescence under UV illumination at an ambient temperature, whereas crystals prepared using ordinary thermodynamic conditions were non‐ or less emissive. Powder and single‐crystal XRD analysis of various crystalline polymorphs revealed that crystal engineering from a typical stacking molecular array to face‐to‐edge packing motif is a key for the OFF–ON control of solid‐state emission. For more details, see the Full Paper by T. Naota et al. on page 9497 ff.