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Zerihun Assefa

Professor/Chair

Zerihun Assefa
College
College of Science and Technology

Department
Chemistry

Contact
New Science Building 348
Education
B.S.Chemistry / Addis Ababa University
Ph.D.Chemistry / University of Maine

Research Interests

1) Development of “vapoluminescent” compounds that can incorporate volatile organic compounds (VOCs) of interest and change their luminescent behavior. The synthesis of designer ligands capable of accepting targeted VOCs of interest are being conducted in the group for sensor application. 2) Tailoring late transition metal complexes and multidentate ligands for Simultaneous Sensitization of Lanthanide Emissions is the second area of interest. 3) Developing and fundamental understanding of white light-emitting novel materials is another area of research interest in the lab for lighting technology used for general illumination.

Recent Publications

  • Branson Maynard, Philip Smith, LeAnn Ladner, Ayesha Jaleel, Nuquie Beedoe, Carlos Crawford, Zerihun Assefa, Richard Sykora (2009). (Emission Enhancement through Dual Donor Sensitization: Modulation of Structural and Spectroscopic Properties in a Series of Europium Tetracyanoplatinates). (14) 48, pp. 6425–6435. Inorganic chemistry.
  • Marc Fiddler, Israel Begashaw, Matthew Mickens, Michael Collingwood, Zerihun Assefa, Solomon Bililign (2009). (Laser spectroscopy for atmospheric and environmental sensing). (12) 9, pp. 10447-10512. Sensors.
  • Kendra Whitehead, Zerihun Assefa (2009). (Synthesis, characterization, and photoluminescence properties of europium (III) and phosphine oxides).
  • Claude Lamb, Zerihun Assefa (2011). (2-Carbethoxy-3, 4-diphenyl cyclopentanone). E66, pp. o1183. Acta Crystallographica.
  • LeAnn Ladner, Tu Ngo, Carlos Crawford, Zerihun Assefa, Richard Sykora (2011). (Solid-State Photoluminescence Sensitization of Tb3+ by Novel Au2Pt2 and Au2Pt4 Cyanide Clusters). (6) 50, pp. 2199–2206. Inorganic chemistry.
  • Milorad Stojanovic, Nicholas Robinson, Zerihun Assefa, Richard Sykora (2011). (Structural analysis and photoluminescence properties of low dimensional lanthanide tetracyanometallates). (1) 376, pp. 414–421. Inorganica Chimica Acta.
  • Zerihun Assefa (2011). (Structural analysis and photo-luminescence properties of low dimensional lanthanide Tetracyanometallates). 376, pp. 414-421. Inorganica Chimica Acta.
  • Darkus Jenkins, Zerihun Assefa (2011). (Synthesis and Spectroscopic Studies of Gold (I) Phosphines that may be used for the Detection of Volatile Organic Compounds). NOAAISETCSC Day.
  • Philip Smith, Carlos Crawford, Nuquie Beedoe, Zerihun Assefa, Richard Sykora (2012). (Synthesis, Crystal Structures, and Dual Donor Luminescence Sensitization in Novel Terbium Tetracyanoplatinates). (22) 51, pp. 12230–12241. Inorganic chemistry.
  • Rylee Thomas, Philip Smith, Ayesha Jaleel, Paul Vogel, Carlos Crawford, Zerihun Assefa, Richard Sykora (2012). (Synthesis, Structural, and Photoluminescence Studies of Gd (terpy)(H2O)(NO3) 2M (CN) 2 (M= Au, Ag) Complexes: Multiple Emissions from Intra-and Intermolecular Excimers and Exciplexes). (6) 51, pp. 3399–3408. Inorganic chemistry.
  • Matthew Mickens, Zerihun Assefa, Dhananjay Kumar (2012). (Tunable white light-emission of a CaW1- x Mo x O4: Tm3+, Tb3+, Eu3+ phosphor prepared by a Pechini sol–gel method). (1) 63, pp. 153–161. Journal of sol-gel science and technology.
  • Darkus Jenkins, Zerihun Assefa (2013). (2-Diphenylphosphanyl-1-methyl-1H-benzimidazole). (8) 69, pp. 1364–1364. Acta Crystallographica Section E: Structure Reports Online.
  • Zerihun Assefa (2013). (2-(diphenylphosphino)-1-methyl-1H-benzo[d]imidazolephosphine). E69, pp. o 1364. Acta Crystallographica E.
  • Derick Forcha, Kwame Brown, Zerihun Assefa (2013). (Luminescence, absorption, and Stern–Volmer studies of cerium chloride and nitrate compounds in acidic and neutral aqueous, and non-aqueous solutions). 103, pp. 90–95. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy.
  • Nicholas Robinson, Philip Smith, Sabrina Grant, Kendra Whitehead, Carlos Crawford, Zerihun Assefa, Richard Sykora (2013). (Novel tetracyanoplatinates with the larger Ln 3+ ions: Synthesis, structures, and photoluminescence properties of KLn [Pt (CN) 4] 2 8.75 H 2 O (Ln= La, Pr, Nd)). 394, pp. 459–465. Inorganica Chimica Acta.
  • Zerihun Assefa, Darkus Jenkins (2013). (Synthesis, X-ray Crystallography, and Photoluminescence studies of four coordinate gold(I) complexes with the weak Lewis base tri-2-furyl phosphine ligand.” ). 406, pp. 293-300. Inorganica Chimica ACTA.
  • Davia Mckoy, Marion Franks, Zerihun Assefa (2014). ((E)-3-(4-(heptyloxy)phenyl)-1-phenylprop-2-en-1-one). E70, pp. o163-o164. Acta Crystallographica E.
  • Carlos Crawford, Zerihun Assefa (2014). (Structure, Luminescence, and Vapochromism of Bridged Cationic Copper(I) Dimers and Polymers). 24, pp. 66-77. Journal of Inorganic and Organomet Polymers .
  • Frankie White, Lam Pham, Kang Xiang, Rylee Thomas, Paul Vogel, Carlos Crawford, Zerihun Assefa, Richard Sykora (2014). (Synthesis, structures, and photoluminescence properties of lanthanide dicyanoaurates containing dimeric aurophilic interactions). 414, pp. 240–249. Inorganica Chimica Acta.
  • Matthew Mickens, Zerihun Assefa (2014). (Tunable luminescence and white light emission of novel multiphase sodium calcium silicate nanophosphors doped with Ce 3+, Tb 3+, and Mn 2+ ions). 145, pp. 498–506. Journal of Luminescence.
  • Zerihun Assefa, Ian Rahn, Carlos Crawford, Ricahard Sykora (2016). (Crystal structure of bis(1,3-diaminopropane-κ2N,N’)bis[2-(4- nitrophenyl) acetato-κO cadmium(II) ). E72, pp. 226-228. Acta Cryst.
  • George Agbeworvi, Zerihun Assefa, Carlos Crawford, Richard Sykora, Jared Taylor (2016). (Higher coordinate gold(I) complexes with the weak Lewis base tri(4- fluorophenyl)phosphine. Synthesis, structural, and density functional theoretical studies). 1108, pp. 508-515. Jornal of Molecular Structure .
  • Zerihun Assefa (2016). (Introducing research style approach in an open inquiry based instruction in upper undergraduate inorganic chemistry teaching laboratory course). 21, pp. 23-27. The Chemical Educator.
  • Zerihun Assefa (2017). (Luminescence Investigation of Samarium(III) Dicyanoaurate(I) based Coordination Networks with and without Aurophilic Interactions). pp. 1-10. Gold Bulletin.
  • Andrea Ofori-Boadu, Frederick Aryeetey, Zerihun Assefa, Elham Hajialiakbari Fini (2018). (Hydration and Setting Behavior of Cement Pastes Modified with Swine-waste Biochar). In Philip Weinsier, (2) 18, pp. 33-43. International Journal of Modern Engineering.