Zobrazeno 1 - 10
of 116
pro vyhledávání: '"Theodros Solomon"'
Publikováno v:
Bulletin of the Chemical Society of Ethiopia, Vol 21, Iss 2, Pp 281-290 (2007)
A solid-state photoelectrochemical cell based on polymer-sensitized nanocrystalline titanium dioxide (nc-TiO2) was constructed and studied for its photoresponse behavior. Poly[2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) and Poly[o
Externí odkaz:
https://doaj.org/article/ad0a1eb750874e9faac8b4447aafd9de
Publikováno v:
Bulletin of the Chemical Society of Ethiopia, Vol 21, Iss 3, Pp 405-417 (2007)
Poly[3-(2',5'-diheptyloxyphenyl)thiophene], PDHOPT, has been prepared electrochemically from its monomer for solar cell application. PDHOPT exhibits a band gap of 2.1 eV. The redox properties of PDHOPT were characterized using cyclic voltammetry. The
Externí odkaz:
https://doaj.org/article/0844fa9cdf3a441a97661d686bfb1330
Autor:
Shimelis Admassie, Zekarias Yacob, Fengling Zhang, Wendimagegn Mammo, Teketel Yohannes, Theodros Solomon
Publikováno v:
Bulletin of the Chemical Society of Ethiopia, Vol 20, Iss 2, Pp 309-317 (2006)
New solution-processable, anthrancene- and benzothiadiazole-containing polyfluorene copolymers (P1-P3) have been synthesized and characterized. The preparation and characterization of the corresponding blue light-emitting devices are also reported. P
Externí odkaz:
https://doaj.org/article/10f75199f0a8488099a86dcfaeed529d
Publikováno v:
Bulletin of the Chemical Society of Ethiopia, Vol 19, Iss 2, Pp 267-276 (2005)
The solvatochromic and thermochromic behaviours of phenyl-substituted polythiophenes were studied. The pristine polymers, upon dissolution in chloroform, exhibited blue-shifted absorption. The solid films of the polymers showed significant blue-shift
Externí odkaz:
https://doaj.org/article/b70696e710224e57938bb0d1ad579f26
Autor:
Negussie Retta, Jan Åke Jönsson, Theodros Solomon, V.J.T. Raju, Negussie Megersa, Worku Dinku
Publikováno v:
Bulletin of the Chemical Society of Ethiopia, Vol 17, Iss 1, Pp 35-43 (2003)
2(2-Hydroxyethyl)hydrazino-4-ethylamino-6-isopropylamino-s-triazine (HEATZ), a derivative of 2-chloro-4-ethylamino-6-isopropylamino-s-triazine, atrazine (ATZ) – a well known herbicide has been studied for complex formation with cobalt(II), nickel(I
Externí odkaz:
https://doaj.org/article/9e20632fcba3442e9e3db4d98b26c247
Autor:
Worku Dinku, Negussie Megersa, V.J.T. Raju, Theodros Solomon, Jan Åke Jönsson, Negussie Retta
Publikováno v:
Bulletin of the Chemical Society of Ethiopia, Vol 15, Iss 1, Pp 29-37 (2001)
Externí odkaz:
https://doaj.org/article/ebdc9eb834ea462e9c8677a993bfdeb5
Publikováno v:
Bulletin of the Chemical Society of Ethiopia, Vol 14, Iss 1, Pp 9-24 (2000)
The liquid membrane extraction method has been employed for selectively extracting trace quantities of s-triazine herbicides in environmental waters collected from lakes Awassa, Chamo and Abbya, located in close proximity to the agricultural farms in
Externí odkaz:
https://doaj.org/article/1573f7f1096d4256b415acece3e69422
Publikováno v:
Bulletin of the Chemical Society of Ethiopia, Vol 11, Iss 2, Pp 151-154 (1997)
Externí odkaz:
https://doaj.org/article/4dba4e1bccfc4589bc2f5d39870be026
Autor:
Theodros Solomon
Publikováno v:
Bulletin of the Chemical Society of Ethiopia, Vol 11, Iss 1, Pp 79-87 (1997)
Externí odkaz:
https://doaj.org/article/0df3680463fe45deb4865dadadc25e3e
Autor:
Theodros Solomon, A.J. Bard
Publikováno v:
Bulletin of the Chemical Society of Ethiopia, Vol 11, Iss 1, Pp 55-70 (1997)
Externí odkaz:
https://doaj.org/article/d09baa072f5f4d388108402ef04ea9ff