0000000000824599
AUTHOR
Manuel
Charged Bis-Cyclometalated Iridium(III) Complexes with Carbene-Based Ancillary Ligands
Charged cydometalated (CN) iridium(III) complexes with carbene-based ancillary ligands are a promising family of deep-blue phosphorescent compounds. Their emission properties are controlled primarily by the main CN ligands, in contrast to the classical design of charged complexes where NN ancillary ligands with low-energy pi* orbitals, such as 2,2'-bipyridine, are generally used for this purpose. Herein we report two series of charged iridium complexes with various carbene-based ancillary ligands. In the first series the CAN ligand is 2-phenylpyridine, whereas in the second one it is 2-(2,4-difluorophenyl)-pyridine. One biscarbene (:CC:) and four different pyridine carbene (NC:) chelators a…
The conditioning of the trunk muscles and back health in Physical Education
Background. The search for scientific arguments for the inclusion of back health as a fundamental aspect in the contents of physical conditioning for health in Physical Education (PE) in schools has led us to search for the relationship between the resistance of trunk musculature and non-specific low back pain in 1st year compulsory secondary education (CSE) students. Methods. Three tests were used: the front bridge (FB) test, the dominant side bridge (SB) test, and the modified Biering-Sorensen test (BS). The Nordic questionnaire was used to assess back health.Results. The prevalence of low back pain in boys was 58.3% (n = 42), while in girls it was 52.7% (n = 39) with no statistically sig…