The luminescence of oxazolones R1‐C6H4CH=CC(O)O‐CN(R2) (1a–1j) and imidazolones R1‐C6H4CH=CC(O)NR3CN(R2) (1k–1q) has been examined. The new GFP‐like imidazolones (GFP = Green Fluorescent Protein) (1k–1q) have been prepared by reaction of the oxazolones with amines H2NR3 and bis(trimethylsilyl)acetamide. The most intense fluorescence was found in push‐pull systems containing simultaneously strong electron‐donating and electron‐withdrawing substituents. The incorporation of the Pd atom into the molecular skeleton of oxazolones and imidazolones notably changes their luminescence. The reaction of oxazolones (1a–1j) and imidazolones (1k–1q) with Pd(OAc)2 (1:1 molar ratio) in carboxylic acids gives the dinuclear [Pd{R1‐C6H3CH=CC(O)OCN(R2)}(µ‐carboxylate)]2 (2a–2j) and [Pd{R1‐C6H3CH=CC(O)NR3CN(R2)}(µ‐carboxylate)]2 (2k–2q) through regioselective C–H bond activation of the ortho position of the respective 4‐arylidene rings. Complexes 2a–2q react with LiCl in MeOH to give the chloride‐bridge derivatives [Pd{R1‐C6H3CH=CC(O)OCN(R2)}(µ‐Cl)]2 (3a–3j) and [Pd{R1‐C6H3CH=CC(O)NR3CN(R2)}(µ‐Cl)]2 (3k–3q), which further react with Tl(acac) (acac = acetylacetonate) to give the mononuclear species [Pd(R1‐C6H3CH=CC(O)OCN(R2)(acac)] (4a–4j) and [Pd{R1‐C6H3CH=CC(O)NR3CN(R2)(acac)}] (4k–4q). Complexes 4o and 4q, having an orthopalladated push‐pull imidazolone, are strongly fluorescent, showing a notable increase of the quantum yield with respect to the free ligands 1o and 1q up of one order of magnitude.
With the objective of analyzing aspects related to the perception of working conditions and their impact on health in the teachers and professors who work for the Universidad Nacional de Cuyo (UNCuyo) in Mendoza, Argentina, this work analyzes the results of the Primer Censo de Condiciones y Salud Laboral [First Census on Health and Working Conditions]. The census was conducted in late 2013 in two academic units (one at the high school level and the other at the university level), including 193 educators. The exploration set out to characterize the teaching staff and the conditions affecting their health, primarily with respect to psycho-social health. In order to do, so a self-administered questionnaire was applied, the dimensions of which were discussed in sensitivity workshops with educators who helped to formulate the data collection instrument. Among the primary results emerge the physical and emotional burnout of these highly skilled workers, owing to the combined effect of their committed response to the demands of their work and the deterioration (both material and symbolic) of the conditions in which they carry out that work.
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