ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Two new bipyridine derivative ligands with an extended π electron system and a triplehydrogen bond group, 2,4-diaminopyrimido[5,6-b]dipyrido[2,3-f:2’,3’-h]quinoxaline (DAPQ) and2,4(1H,3H)-pyrimidinedion[5,6-b]dipyrido[2,3-f:2’3’-h]quinoxaline (PDPQ), were synthesized inorder to construct high-performance Ru(II) complexes. The two Ru(II) complexes composed of dapqor pdpq and two 2,2’-bipyridine (BPY) ligands showed characteristic luminescent spectra with a peakmaximum at ca. 610 nm. The octahedral Ru(II) complexes with a D-A-D (D: proton donor; A: protonacceptor) type triple hydrogen bond indicated intense luminescence in comparison with thecorresponding Ru(II) complex composed of three BPY ligands. When the triple hydrogen bond wasformed with a Co(III) complex with the D-A-D type hydrogen bonding group, the luminescence wasquenched. This result was explained in terms of an energy transfer from an excited Ru(II) complex tothe Co(III) complex
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.11-12.277.pdf
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