Publications

2023

Oke, S.I., Ekum, M.I., Akintande, Achadu, O.J. et al.

Optimal control of the coronavirus pandemic with both pharmaceutical and non-pharmaceutical interventions. Int. J. Dynam. Control

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2022

Bankole, O. M., Ojubola, K. I., Adanlawo, O. S., Adesina, A. O., Lawal, I. O., Ogunlaja, A. S., Ojodomo J. Achadu.

Amoxicillin Encapsulation on Alginate/Magnetite Composite and Its Antimicrobial Properties Against Gram-Negative and Positive Microbes, BioNanoScience, (2022), 12, 1136–1149.

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Achadu, O. J., Elizur, G. L., Boye, T. G. E., & Park, E. Y. (2022).

Green synthesis of carbon dots using expired agar for a label-free fluorescence signal-amplified detection of ferric ion utilizing oxalate functionalization. Materials Advances, 3(15), 6307-6315.

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Achadu, O. J., Nwaji, N., Lee, D., Lee, J., Akinoglu, E. M., Giersig, M., & Park, E. Y. (2022).

3D hierarchically porous magnetic molybdenum trioxide@gold nanospheres as a nanogap-enhanced Raman scattering biosensor for SARS-CoV-2. Nanoscale Advances, 4(3), 871-883.

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2021

Achadu, O. J. , Abe, F., Hossain, F., Nasrin, F., Yamazaki, M., Suzuki, T., & Park, E. Y.

Sulfur-doped carbon dots@polydopamine-functionalized magnetic silver nanocubes for dual-modality detection of norovirus. Biosensors and Bioelectronics, 193, [113540].

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Achadu, O. J., Abe, F., Li, T. C., Khoris, I. M., Lee, D., Lee, J., Suzuki, T., & Park, E. Y.

Molybdenum Trioxide Quantum Dot-Encapsulated Nanogels for Virus Detection by Surface-Enhanced Raman Scattering on a 2D Substrate. ACS Applied Materials and Interfaces, 13(24), 27836-27844.

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2020

Achadu, O. J. , Lioe, D. X., Kagawa, K., Kawahito, S., & Park, E. Y. (2020).

Fluoroimmunoassay of influenza virus using sulfur-doped graphitic carbon nitride quantum dots coupled with Ag2S nanocrystals. Microchimica Acta, 187(8), [466].

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Achadu, O. J., Abe, F., Suzuki, T., & Park, E. Y. (2020).

Molybdenum Trioxide Nanocubes Aligned on a Graphene Oxide Substrate for the Detection of Norovirus by Surface-Enhanced Raman Scattering. ACS Applied Materials and Interfaces, 12(39), 43522-43534.

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Achadu, O. J., Takemura, K., Khoris, I. M., & Park, E. Y. (2020).

Plasmonic/magnetic molybdenum trioxide and graphitic carbon nitride quantum dots-based fluoroimmunosensing system for influenza virus. Sensors and Actuators, B: Chemical, 321, [128494].

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Nasrin, F., Chowdhury, A. D., Ganganboina, A. B., Achadu, O. J., Hossain, F., Yamazaki, M., & Park, E. Y.

Fluorescent and electrochemical dual-mode detection of Chikungunya virus E1 protein using fluorophore-embedded and redox probe-encapsulated liposomes. Microchimica Acta, 187(12), [674].
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2019

Achadu, O. J. & Revaprasadu, N.

Tannic acid-derivatized graphitic carbon nitride quantum dots as an “on-off-on” fluorescent nanoprobe for ascorbic acid via copper(II) mediation. Microchimica Acta, 186(2), [87].

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Achadu, O. J. & Nyokong, T.

Fluorescence “turn-ON” nanosensor for cyanide ion using supramolecular hybrid of graphene quantum dots and cobalt pyrene-derivatized phthalocyanine. Dyes and Pigments, 160, 328-335.

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2018

Achadu, O. J. & Revaprasadu, N.

Microwave-assisted synthesis of thymine-functionalized graphitic carbon nitride quantum dots as a fluorescent nanoprobe for mercury(II). Microchimica Acta, 185(10), [461].

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Fomo, G., Achadu, O. J. , & Nyokong, T.

One-pot synthesis of graphene quantum dots–phthalocyanines supramolecular hybrid and the investigation of their photophysical properties. Journal of Materials Science, 53(1), 538-548.

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Managa, M., Achadu, O. J., & Nyokong, T. 

Photophysical studies of graphene quantum dots – Pyrene-derivatized porphyrins conjugates when encapsulated within Pluronic F127 micelles. Dyes and Pigments, 148, 405-416.

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Nwahara, N., Achadu, O. J., & Nyokong, T.

In-situ synthesis of gold nanoparticles on graphene quantum dots-phthalocyanine nanoplatforms: First description of the photophysical and surface enhanced Raman scattering behaviour. Journal of Photochemistry and Photobiology A: Chemistry, 359, 131-144.
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Nwaji, N., Achadu, O. J., & Nyokong, T.

Photo-induced resonance energy transfer and nonlinear optical response in ball-type phthalocyanine conjugated to semiconductor and graphene quantum dots. New Journal of Chemistry, 42(8), 6040-6050.
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Achadu, O. J.

Postgraduate writing groups as spaces of agency development. South African Journal of Higher Education.

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2017

Achadu, O. J. & Nyokong, T.

In situ one-pot synthesis of graphitic carbon nitride quantum dots and its 2,2,6,6-tetramethyl(piperidin-1-yl)oxyl derivatives as fluorescent nanosensors for ascorbic acid. Analytica Chimica Acta, 991, 113-126.

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Achadu, O. J. & Nyokong, T.

Graphene quantum dots anchored onto mercaptopyridine-substituted zinc phthalocyanine-Au@Ag nanoparticle hybrid: Application as fluorescence “off-on-off” sensor for Hg2+ and biothiols. Dyes and Pigments, 145, 189-201.

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Achadu, O. J. & Nyokong, T.

Application of graphene quantum dots functionalized with thymine and thymine-appended zinc phthalocyanine as novel photoluminescent nanoprobes. New Journal of Chemistry, 41(4), 1447-1458.

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Achadu, O. J. & Nyokong, T.

Graphene quantum dots decorated with maleimide and zinc tetramaleimido-phthalocyanine: Application in the design of “OFF-ON” fluorescence sensors for biothiols. Talanta, 166, 15-26.

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Achadu, O. J. & Nyokong, T.

Graphene quantum dots coordinated to mercaptopyridine-substituted phthalocyanines: Characterization and application as fluorescence “turn ON” nanoprobes. Spectrochimica Acta – Part A: Molecular and Biomolecular Spectroscopy, 174, 339-347.

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Achadu, O. J. , Managa, M., & Nyokong, T.

Fluorescence behaviour of supramolecular hybrids containing graphene quantum dots and pyrene-derivatized phthalocyanines and porphyrins. Journal of Photochemistry and Photobiology A: Chemistry, 333, 174-185.

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Bankole, O. M. , Achadu, O. J. , & Nyokong, T.

Nonlinear Interactions of Zinc Phthalocyanine-Graphene Quantum Dots Nanocomposites: Investigation of Effects of Surface Functionalization with Heteroatoms. Journal of Fluorescence, 27(2), 755-766.

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Matshitse, R., Sekhosana, K. E., Achadu, O. J. , & Nyokong, T.

Characterization and physicochemical studies of the conjugates of graphene quantum dots with differently charged zinc phthalocyanines. Journal of Coordination Chemistry, 70(19), 3308-3324.
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Kubheka, G., Achadu, O. , Mack, J., & Nyokong, T. 

Optical limiting properties of 3,5-diphenyldibenzo-azaBODIPY at 532 nm. New Journal of Chemistry, 41(20), 12319-12325.

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Centane, S., Achadu, O. J. , & Nyokong, T. (2017).

Effects of Substituents on the Electrocatalytic Activity of Cobalt Phthalocyanines when Conjugated to Graphene Quantum Dots. Electroanalysis, 29(11), 2470-2482.

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2016

Achadu, O. J., Britton, J., & Nyokong, T.

Graphene Quantum Dots Functionalized with 4-Amino-2, 2, 6, 6-Tetramethylpiperidine-N-Oxide as Fluorescence “Turn-ON” Nanosensors. Journal of Fluorescence, 26(6), 2199-2212.

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Achadu, O. J., Uddin, I., & Nyokong, T.

The interaction between graphene quantum dots grafted with polyethyleneimine and Au@Ag nanoparticles: Application as a fluorescence “turn-on” nanoprobe. Journal of Photochemistry and Photobiology A: Chemistry, 324, 96-105.

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Achadu, O. J. & Nyokong, T.

Interaction of Graphene Quantum Dots with 4-Acetamido-2,2,6,6-Tetramethylpiperidine-Oxyl Free Radicals: A Spectroscopic and Fluorimetric Study. Journal of Fluorescence, 26(1), 283-295.

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Achadu, O. J. , Uddin, I., & Nyokong, T.

Fluorescence behavior of nanoconjugates of graphene quantum dots and zinc phthalocyanines. Journal of Photochemistry and Photobiology A: Chemistry, 317, 12-25.

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Achadu, O. J. & Nyokong, T.

Application of graphene quantum dots decorated with TEMPO-derivatized zinc phthalocyanine as novel nanoprobes: Probing the sensitive detection of ascorbic acid. New Journal of Chemistry, 40(10), 8727-8736.

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Boye E. T., Ojodomo J. Achadu, Oreko B.U, Samuel O.D

Carbon Nanotubes: The Building Blocks of Nanotechnology Development. (Review article); Journal of Nanotechnology Progress International (JONPI), 2016, 6 (2) 28-46.

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Ojodomo J. Achadu; Ocholi I. Ochimana; Ahmadu A. Ochefu; Uzoma P. Njoku

Assessment of Heavy Metals Levels and Leaching Potentials in Dumpsites Soils in Wukari, North-Eastern Nigeria, International Journal of Modern Analytical and Separation Sciences, 2016, 5(1) 20-31.

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Ojodomo J. Achadu; Ocholi I. Ochimana; Ahmadu A. Ochefu; Uzoma P. Njoku

Assessment of Heavy Metals Levels and Leaching Potentials in Dumpsites Soils in Wukari, North-Eastern Nigeria, International Journal of Modern Analytical and Separation Sciences, 2016, 5(1) 20-31.

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Ojodomo J. Achadu, Ocholi I. Ochimana, Paul U. Njoku, Enock E. Goler, Simeon A. Akogwu

Analytical assessment of heavy metals content in local decoctions and herbal beverages commonly consumed in Wukari, North-eastern Nigeria, Global Advanced Research Journal of Environmental Science and Toxicology, 2016, 5(2) 1-12.

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2015

Ojodomo J. Achadu, Ochefu, A.A, Akogwu S.A, Ako, F.E, Ochimana, I.O

Assessment of the levels of Cadmium and Lead in Wells and Boreholes water within Wukari, North-Eastern Nigeria, International Journal of Chemistry and Aquatic Sciences, 2015 1(1) 11-19.

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Ojodomo J. Achadu, E.E. Goler, O.O. Ayejuyo, O.O. Olaoye, O.I. Ochimana

Assessment of Heavy Metals (Cd, Cu, Pb and Zn) Concentrations in Soils along a Major Highway in Wukari, North-Eastern Nigeria, J. Bio. & Env. Sci. 2015, 6(2) 1-7.

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2014

Ojodomo J. Achadu, Ayejuyo, O.O; Ako, F.E; Dalla, C.L and Olaoye, O.O

Synchronous adsorption of cadmium and lead ions from aqueous media by rice husk ash and sodium Dodecyl sulfate combination. International Journal of Modern Analytical and Separation Sciences, 2014, 3(1) 20-39.

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Ayejuyo, O.O; Biobaku, B.C; Osundiya, M.O, Ojodomo J. Achadu. 

The impact of gas flaring and venting in Nigeria and management options: A case study of oil producing areas, J. Bio. & Env. Sci. 2014, 4 (2) 27-36.

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2013

Ojodomo J. Achadu; Ako, F.E and Dalla, C.L

Quality assessment of stored harvested rainwater in Wukari, North – eastern Nigeria. IOSR Journal of environmental Science, Toxicology and Food Technology, 2013, 7 (5) 25-32.

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Ojodomo J. Achadu, Ayejuyo, O.O

Micellar aided Chromogenic reagents for simultaneous Spectrophotometric determination of Aluminum and Iron. IOSR Journal of Applied Chemistry, 2013, 5(6) 9-16.

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