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Publications


2019

Njogu, REN, Fodran P, Tia Y, Njenga LW, Kariuki DK, Yusuf AO, Scheblykin I, Wendt OF, Wallentin C-J.  2019.  Electronically Divergent Triscyclometalated Iridium (III) 2-(1-naphthyl) pyridine Complexes and Their Application in Three-Component Methoxytrifluoromethylation of Styrene. Synlett. 30(07):792-798. AbstractSynlett

Description
A systematic study of the photophysical and electrochemical properties of triscyclometalated homoleptic iridium(III) complexes based on 2-(1-naphthyl)pyridine (npy) ligands is presented. A systematic investigation of ligand substitution patterns showed an influence on the lifetime of the excited state, with slight changes in the absorption and emission spectral features. Specifically, the emission lifetime of a complex of an npy ligand substituted with a strongly electron-withdrawing trifluoromethyl group was longer than that of the corresponding complex with the electronically nonperturbed ligand (3.7 μs versus 1.5 μs). Electronically complementary ligands and complexes with orthogonal configurations showed slightly shorter excited state lifetimes compared with unsubstituted npy (1.4–3.0 μs). All complexes displayed reversible or quasireversible redox-couple processes, with the complex of the trifluoromethylated …

2015

Njogu, RNE, Njenga LW, Wendt OF, Kariuki DK, Amir OY.  2015.  Synthesis and characterization of Tris-cyclometalated Iridium (III) and Ruthenium (II) complexes, 11 March. 3rd Nordic meeting on Organometallic Chemistry. , Lund, Sweden
Njogu, RNE, Kariuki DK, Kamau DM, Wachira FN.  2015.  Economic Evaluation of Foliar NPK Fertilizer on Tea Yields in Kenya. Journal of Plant Studies. 4(1):35-43.

2014

Njogu, RNE &, Kariuki DK, D.M. K, F.N. W.  2014.  Relationship between Tea (Camellia sinensis) Leaf Uptake of Major Nutrients, Nitrogen, Phosphorous and Potassium (NPK) and Leaf Anatomy of Different Varieties Grown in the Kenyan Highlands. BEST: International Journal of Humanities, Arts, Medicines and Sciencies (BEST: IJHAMS). 2(8):95-102.
Njogu, RNE, Kariuki DK, D.M. K, F.N. W.  2014.  Effects of Foliar Fertilizer (NPK) Uptake in Tea Camellia sinensis on Tea Quality and Nutrient Residue Levels in Kenyan Highlands. American Journal of Plant Sciences. 5(18):2707-2715.

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