Coordinator, Materials Science Program

Postdoctoral fellow, Department of physical chemistry, Kaiserslautern University of Technology, Kaiserslautern, Germany; Graduiertenkolleg: Nonlinear Optics and Ultra-short-time Physics

07/04/2003

PhD in Chemistry, Kaiserslautern University of Technology, Kaiserslautern, Germany;

Dissertation Title: Highly efficient photorefractive glasses on basis of non-aggregating electro-optical Chromophore (Magma Cum Laude);

Advisor: Prof. Dr. R. Wortmann

Award: for PhD study, Friedrich-Ebert-Stiftung

07/10/1999

M.Sc. in Chemistry, Kaiserslautern University of Technology, Kaiserslautern, Germany;

Thesis Title: Characterization and optimization of electro optical Chromophores for photorefractive application

Advisor: Prof. Dr. R. Wortmann

Award: for MSc study, Friedrich-Ebert-Stiftung

28/06/1986

B.Sc. in Chemistry, Addis Ababa University, Addis Ababa, Ethiopia

• Graduiertenkolleg University of Kaiserslautern: Nonlinear Optics and Ultra-short-time Physics
• Award: for PhD study, Friedrich-Ebert-Stiftung
• Award: for MSc study, Friedrich-Ebert-Stiftung

• Ground and Excited States Photophysics of Equilibrium Systems
• Inter and Intramolecular Charge Transfer Systems
• Optical molecular and Laser Spectroscopy
• Optical Methods for Routine and Online Monitoring
• Electro-analytical Methods for Routine and Online Monitoring
• Organic photorefractive and photochromic Materials
• Optimization for Alternative Energy Sources

1. Debebe, B.S. Chandravanshi, M. Redi-Abshiro, Assessment of Essential and Non-Essential Metals in Ethiopia Fermented Traditional Alcohol Beverages, Bull. Chem. Soc. Ethiop. (2017).
2. Debebe, M. Redi‑Abshiro and B.S. Chandravanshi, Non-destructive determination of ethanol levels in fermented alcoholic beverages using Fourier transform mid-infrared spectroscopy, Chemistry Central Journal (2017) 11:27, DOI 10.1186/s13065-017-0257-5.
3. M. Hailu, M. Atlabachew, B.S. Chandravanshi and M. Redi-Abshiro, Composition of essential oil and antioxidant activity of Khat (Catha edulis Forsk), Ethiopia, Chemistry International 3 (2017) 25-31.
4. Debebe, A. Anberbir, M. Redi-Abshiro, B.S. Chandravanshi, A. Asfaw, N. Asfaw and N. Retta, Alcohol Determination in Distilled Alcoholic Beverages by Liquid Phase Fourier Transform Mid-Infrared and Near Infrared Spectrophotometries, Food Anal. Methods 10(2017) 172–179.
5. Mehari, M. Redi-Abshiro, B.S. Chandravanshi, S. Combrinck and R.I. McCrindle, Characterization of the Cultivation Region of Ethiopian Coffee by Elemental Analysis, Analytical Letters 49 (2016) 2474–2489.
6. T. Gemeda, M. Redi-Abshiro and Ahmed Mustefa, Excitation Wavelength Dependence of Dual Fluorescent Molecules, International Research Journal of Pure & Applied Chemistry13 (2016) 1-15.
7. Mehari, M. Redi-Abshiro, B.S. Chandravanshi, S. Combrinck, M. Atlabachew and R.I. McCrindle, Profiling of Phenolic Compounds Using UPLC-MS for Determining the Geographical Origin of Green Coffee Beans from Ethiopia, J Food Composition and Analysis 45 (2016) 16–25.
8. Debebe, B.S. Chandravanshi and M. Redi-Abshiro, Total Contents of Phenolics, Flavonoids, Tannins and Antioxidant Capacity of Selected Traditional Ethiopian Alcoholic Beverages, Bull. Chem. Soc. Ethiop. 30 (2016) 27-37.
9. L. Hailu, B.U. Nair, M. Redi‐Abshiro, I. Diaz, R. Aravindhan and Merid Tessema, Oxidation of 4‐chloro‐3‐methylphenol using zeolite Y‐encapsulatediron(III)‐, nickel(II)‐, and copper(II)‐N,N’‐disalicylidene‐1,2‐phenylenediamine complexes, Chin. J. Catal. 37 (2016) 135–145.
10. Atlabachew, N. Torto, B.S. Chandravanshi, M. Redi-Abshiro, S. Chigome, K. Mothibedi and S. Combrinck, A (–)-norephedrine-based molecularly imprinted polymer for the solid-phase extraction of psychoactive phenylpropylamino alkaloids from Khat (Catha edulis Vahl. Endl.) chewing leaves, Biomed. Chromatogr.,30 (2016) 1007–1015.
11. Mehari, M. Redi-Abshiro, B.S. Chandravanshi, S. Combrinck, M. Atlabachew and R.I. McCrindle, Simultaneous Determination of Alkaloids in Green Coffee Beans from Ethiopia: Chemometric Evaluation of Geographical Origin, Food Anal. Methods 9 (2016) 1627-1637.
12. L. Hailu, B.U. Nair, M. Redi-Abshiro, R. Aravindhan, I. Diaz and M. Tessema,, Experimental and Computational Studies on Zeolite-Y Encapsulated Iron(III) and Nickel(II) Complexes Containing Mixed-ligand of 2,2′-bipyridine and 1,10-phenanthroline, RSC Adv.5 (2015), 88636–88645.
13. L. Hailu, B.U. Nair, M. Redi-Abshiro, R. Aravindhan, I. Diaz and M. Tessema, Synthesis, characterization and catalyticapplication of zeolite based heterogeneouscatalyst of iron(III), nickel(II) andcopper(II) salen complexes for oxidation oforganic pollutants, J Porous Mater 22 (2015) 1363–1373.
14. Sime, M. Atlabachew, M. Redi-Abshiro and T. Zewde, Total phenols and antioxidant activities of natural honeys and propolis collected from geographical regions of Ethiopia, Bull. Chem. Soc. Ethiop. 29 (2015) 163–172.
15. N. Mekonnen, B.S. Chandravanshi, M. Redi-Abshiro, A.A. Ambushe, R.I. McCrindle and Stanley Moyo, Distribution of polycyclic aromatic hydrocarbons in sediments of Akaki River, Lake Awassa, and Lake Ziway, Ethiopia, Environ Monit Assess 187 (2015) 474.
16. N. Mekonnen, A.A. Ambushe, B.S. Chandravanshi, M. Redi-Abshiro and R.I. McCrindle, Occurrence, distribution, and ecological risk assessment of potentially toxic elements in surface sediments of Lake Awassa and Lake Ziway, Ethiopia, Journal of Environmental Science and Health, Part A50 (2015) 90–99.
17. Negera, T. Alemu, D. Beyene, A. Asfaw and   M. Redi-Abshiro, Bioethanol production from coffee husk using fruit yeast isolates and baker yeast, Advances in Biochemistry & Biotechnology, 1 (2015).
18. N. Mekonnen, A.A. Ambushe, B.S. Chandravanshi, M. Redi-Abshiro and R.I. McCrindle, Assessment of potentially toxicelements in Swiss chard and sedimentsof Akaki River, Ethiopia, Toxicological & EnvironmentalChemistry, Toxicological & Environmental Chemistry 96 (2014) 1501–1515.
19. , Habte, F. Zewge and M. Redi-Abshiro, Removal of azo dye from water by adsorption using waste residue from alum manufacturing process, African Journal of Environmental Science and Technology 8 (2014) 482–490.
20. Atlabachew, B.S. Chandravanshi and M. Redi-Abshiro, Selected Secondary Metabolites and Antioxidant Activity of Khat (Catha Edulis Forsk) Chewing Leaves Extract, International Journal of Food Properties 17 (2014) 45–64.
21. Atlabachew, B.S. Chandravanshi, M. Redi-Abshiro, N. Torto, S. Chigome and B.O. Pule, Evaluation of the Effect of Various Drying Techniques on the Composition of the Psychoactive Phenylamino Alkaloids of Khat (Catha Edulis Forsk) Chewing Leaves, Bull. Chem. Soc. Ethiop. 27 (2013), 347-358.
22. B. Dejene, M.A. Kebede, M. Redi-Abshiro and B.V. Kgarebe, Structural and photoluminescence properties of Dy³⁺ co-doped and Eu²⁺ activated MAl₂O₄ (M = Ba, Ca, Sr) nanophosphors, Optical Materials 35 (2013) 1927–1931.
23. Atlabachew, N. Torto, B.S. Chandravanshi and M. Redi-Abshiro, Matrix Solid-Phase Dispersion for the Liquid Chromatographic Determination of Psychoactive Phenylpropylamino Alkaloids from Khat (Catha Edulis Forsk) Chewing Leaves, Chromatographia76 (2013) 401–408.
24. Melak, M. Redi-Abshiro, M. Tessema, E. Alemayehu, Electrochemical determination of catechol in tea samples using anthraquinone modified carbon paste electrode, Natural Science 5 (2013) 888–894.
25. Seda, M. Assefa, B.S. Chandravanshi, M. Redi-Abshiro, Levels of common ions and heavy metals in bottled mineral waters consumed in Addis Ababa, Ethiopia, Ethiop. J. Sci. 36 (2013) 27–40.
26. N. Mekonnen, A.A. Ambushe, B. S. Chandravanshi, M. Redi-Abshiro, A. du Plessis and R.I. McCrindle, Assessment of the Concentration of Cr, Mn and Fe in Sediment Using Laser-Induced Breakdown Spectroscopy, Bull. Chem. Soc. Ethiop. 27 (2013) 1–13.
27. N. Mekonnen, A.A. Ambushe, B.S. Chandravanshi, M. Redi-Abshiro and R.I. McCrindle, Potentially toxic elements in some fresh water bodies in Ethiopia, Toxicological & Environmental Chemistry 94 (2012) 1980–1994.
28. Kefale, M. Redi-Abshiro and A. Asfaw, Potential of Bioethanol Production and Optimization Test from Agricultural Waste: The Case of Wet Coffee Processing Waste (Pulp), International Journal of Renewable Energy Research 2 (2012) 446–450.
29. Assefa, A. Dekebo, H. Kassa, A. Habtu, G. Fitwi, M. Redi-Abshiro, Biophysical and Chemical Investigations of Frankincense of Boswelliapapyrifera from North and Northwestern Ethiopia, Journal of Chemical and Pharmaceutical Research 4 (2012) 1074–1089.
30. Assefa, B. Shimelis, H. Kassa, D. Bekana, M. Redi-Abshiro, T. Kebede, G. Fitwi, Chemical Investigations on Frankincense from Boswellia Trees to Improve Production, Handling and Grading Practices for the Export Market in Ethiopia, J. P & A Sc and Tech. 2(2012) 15–31.
31. N. Mekonnen, A.A. Ambushe, B.S. Chandravanshi, M. Redi-Abshiro, R.I. McCrindle and N. Panichev, Distribution of mercury in the sediments of some freshwater bodies in Ethiopia, Toxicological & Environmental Chemistry 94 (2012) 1678–1687.
32. A. Hussein, A.M. Mohammed, M. Tessema, F.B. Dejene and M. Redi-Abshiro, Solvent Polarity and Excitation Wavelength Dependence of the Dual Fluorescence N,N-Diethyl-4-Nitrosoaniline, Journal of Fluorescence 22 (2012) 451-456.
33. Atlabachew, B.S. Chandravanshi and M. Redi-Abshiro, Profile of Major, Minor and Toxic Metals in Soil and Khat (Catha edulis Forsk) Cultivars in Ethiopia, Trends in Applied Sciences Research 6 (2011) 640–655.
34. Atlabachew, B.S. Chandravanshi, F. Zewge and M. Redi-Abshiro, Fluoride Content of Ethiopian Khat (Catha edulis Forsk) Chewing Leaves, Toxicological & Environmental Chemistry 93 (2011) 32–43.
35. Atsbeha, A.M. Mohammed and M. Redi-Abshiro, Excitation Wavelength Dependence of Dual Fluorescence of DMABN in Polar Solvents, Journal of Fluorescence 6 (2010), 1241–1248.
36. Atlabachew, B.S. Chandravanshi and M. Redi-Abshiro, Concentration Levels of Essential and Non-essential Metals in Ethiopian Khat (Catha edulis Forsk), Biological Trace Element Research 138 (2010) 316–325.
37. Mengesha, M. Redi-Abshiro and A. Asfaw, Band Deconvolution Method for Determination of Caffeine in Coffee Beans, Asian Journal of Spectroscopy 14 (2010) 39–45.
38. Mengesha, M. Redi-Abshiro, A. Asfaw, S.K. Ghoshal, D. Mohan, and S. Sharma, Fluorescence Quenching Method for the Determination of Caffeine in Coffee Seeds, Asian Journal of Spectroscopy 13 (2009) 83–88.
39. Aklilu, M. Tessema and M. Redi-Abshiro, Indirect Voltammetric Determination of Caffeine Content in Coffee Using 1,4-Benzoquinone Modified Carbon Paste Electrode, Talanta76 (2008) 742–746.
40. Belay, K. Ture, M. Redi-Abshiro and A. Asfaw, Measurement of caffeine in coffee beans with UV/vis spectrometer, Food Chemistry, 108 (2008) 310–315.
41. Wortmann, U. Rösch, M. Redi-Abshiro and F. Würthner, Large Electric-Field Effects on the Dipolar Aggregation of Merocyanine Dyes, AngewandteChemie115 (2003) 2126-2129; AngewandteChemie International Edition 42 (2003) 2080–2083.
42. Abbotto, L. Beverina, S. Bradamante, A. Facchetti, C. Klein, G. A. Pagani, M. Redi-Abshiro and R. Wortmann, A distinctive example of the cooperative interplay of structure and environment in tuning of intramolecular charge transfer in second-order nonlinear optical chromophores, Chemistry-A. European Journal 9 (2003) 1991–2007.
43. Wortmann, M. Redi-Abshiro, U.Rösch, S. Yao and F. Würthner, Photorefractive organic glasses based on a new chromophore with minimized aggregation tendency, Proc. SPIE 4802 (2002) 1–7.
44. Würthner, S. Yao, J. Schilling, R. Wortmann, M. Redi-Abshiro, E. Mecher, F. Gallego-Gomez, K. Meerholz, ATOP dyes. Optimization of a Multifunctional Merocyanin Chromophore for high Refractive index Modulation in Photorefractive Materials, JACS 123(2001) 2810–2814.

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