1. Otutu, O.J. and A.K. Asiagwu, 2019. Synthesis and application to polyester and nylon 6 fabrics of hetaryl bis-azo disperse dyes based on 6-amino-2, 4-dihydroxypyrimidine and 4-methoxy-2-nitroaniline moieties. J. Scient. Res., 11: 215-224.
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2. Otutu, J.O., O.L.Ejeta, E.K. Ossai, O.O.Akpomie and F.Otuare, 2019. Synthesis and antimicrobial evaluation of some 3-anyl-3, 7-disubstituted-4-(3H) quinazolinone derivatives. Niger. J. Applied Sci., 37: 38-50.
3. Otutu, J.O., E.K. Ossai, S.U.Ameuru, P.O. Itoya and W.E. Morka, 2019. The application of disperse dyes derived from 4-bromo aniline and 3-chloroaniline onto polyester fabric. Bull. Chem. Soc. Ethiopia, 33: 127-134.
4. Otutu, J.O., A.K. Asiagwu, I.E. Onyesom, J.K. Ebigwai and P.O. Itoya, 2019. Improving the efficiency of Nesogordonia papaeverifera (Danta) as a natural dye in textile making industry. Bull. Chem. Soc. Ethiopia, 33: 415-424.
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5. Otutu, J.O., A.K. Asiagwu and P.O. Itoya, 2019. Disperse dyes based on 2-amino-5-mercapto-1,3,4-thiadiazole and 2-amino-4,6-dihydroxypyrimidine monistic: Synthesis and application on nylon 6 fabrics. Niger. J. Pure Applied Sci., 32: 3358-3365.
6. Otutu, J.O., 2019. The use of the bark of Byroscarpus coccineus Schum and Thumm as natural dye source for natural and synthetic fibres. FUTA J. Res. Sci., 15: 51-60.
7. Otutu, J.O., 2019. Synthesis of disperse dyes and their application on synthetic fabrics. Federal Univ. Wukari Trends Sci. Technol., 4: 92-96.
8. Otutu, J.O., 2019. Monoazo colourants based on 2-chloro-4-fluoroaniline and 3-chloro-4-fluoroaniline. Niger. J. Sci. Environ., 17: 75-84.
9. Iwegbue, C.M.A., A.A. Ogbuta, J.O. Otutu, G. Obi, F.E. Egobueze and B.S. Martincigh, 2019. Evaluation of human exposure to polycyclic aromatic hydrocarbons from some edible oils and shea butter in Nigeria. Polycyclic Aromat. Compounds, 10.1080/10406638.2019.1570951.
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10. Otutu, J.O., 2018. Synthesis of monoazo-disperse dyes derived from 4-phenoxyaniline and their application on synthetic fabrics. Federal Univ. Wukari Trends Sci. Technol. J., 3: 550-555.
11. Otutu, J.O. and E.K. Ossai, 2017. Synthesis of disperse dyes derived from Z-amino-1,3,4-thia diazole-2-thiol and their dyeing properties on polyethylene terephthalate fabric Mambilla. J. Sci. Environ., 4: 8-16.
12. Otutu, J.O. and E.K. Ossai, 2017. Colourants extracted from the bark of Iroko plant (Milicia excels) and their application as natural dyes on polyester and polyamide 6 fabrics Mambilla. J. Sci. Environ., 4: 28-37.
13. Otutu, J.O., E.K. Ossai and S.U. Ameuru, 2016. Disazo disperse dyes derived from 2-chloro-4-methylaniline and 3-aminophenol and their application on nylon 6 fabric using pressure dyeing method. J. Applied Sci., 16: 146-153.
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14. Otutu, J.O., E. Osabohien and E.M. Efurhievwe, 2016. Extraction of natural dyes for textile dyeing from the by-products of the timber industry. Biosci. Biotechnol. Res. Asia, 7: 87-92.
15. Otutu, J.O., E.K. Ossai and S.U. Ameuru, 2015. Synthesis and application of hetaryl disazo disperse dyes derived from 4-amino-2-chloro-6, 7-dimethoxyquinazoline and 3-chloroaniline on polyester fabric. Int. J. Biol. Chem. Sci., 9: 1733-1741.
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16. Otutu, J.O., E.M. Efurhievwe and S.U. Ameuru, 2014. Synthesis of disazo disperse dye compounds derived from 4-bromoaniline and 3-aminophenol as potential near infra-red absorbers. Chem. Mater. Res., 6: 40-46.
17. Otutu, J.O., E.M. Efurhievwe and S.U. Ameru, 2014. Synthesis and application of disazo dyes derived from 2-amino-5-mercapto-1,3, 4-thiadiazole and 2-chloroaniline on acrylic fabric and nylon 66 fabric. Curr. Res. Chem., 6: 1-9.
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18. Otutu, J., E. Efurhievwe, S. Ameru and E. Ossai, 2014. Synthesis and application of hetaryl disazo disperse dyes derived from 2‐amino‐5‐mercapto‐1, 3, 4‐thiadiazole and 3‐chloroaniline on synthetic polymer‐fibres. Chem. Mater. Res., 6: 44-52.
19. Johnson, O.O., U.S. Ameurub and M. KabirYakubub, 2014. Thermodynamic sorption parameters and kinetics of dyeing disazo dyes derived from 4-aminobenzoic acid and 4-amino-3-nitrotoluene on polyester fibre and polyamide fibre. Br. J. Applied Sci. Technol., 4: 2955-2969.
20. Akpona, E., J.O. Otutu, O.O. Akpomie and M. Ugbogu, 2014. Evaluation of the acute toxicity of three locally synthesized dyes (3,5-Dimethoxypyrimidine azo-6-methyl aracil. 5-Ethoxybenzothiazole azo-benzyloxyphenol and 4-Ethyl-5,2,3-Thiazole azo-6-methyl uracil) using Nitrosomonas sp and Nitrobacter sp. Asia J. Applied Microbiol., 1: 18-25.
21. Akpona, E., J.O. Otutu and M. Ubogu, 2014. Evaluation of the biodegradability of three locally synthesized dyes (3,5-Dimethoxypyrimidine azo-6-methyl uracil, 5-Ethoxybenzothiazole azo benzyloxyphenol and 4-Ethyll-5,2,3-thiazole azo-6-methyl Uracil) in fresh water and brackish. Water Environ. J. Microbiol. Res. Rev., 2: 48-53.
22. Otutu, J.O., 2013. Synthesis and properties of some hetaryl disazo and trisazo disperse dye derivatives of 2-amino-5-nitrothiazole and 1-naphthylamine. Int. J. Res. Rev. Applied Sci., 15: 197-202.
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23. Otutu, J.O., 2013. Synthesis and fastness properties of disazo disperse dyes derived from 4-amino-3-nitrotoluene and 1, 4-diaminobenzene. Niger. J. Sci. Environ., 12: 34-39.
24. Otutu, J.O., 2013. Synthesis and application of azo dyes derived from 2-amino-1, 3, 4-thiadiazole-2-thiol on polyester fibre. Int. J. Res. Rev. Applied Sci., 15: 292-296.
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25. Otutu, J.O., 2013. Preparation of azo disperse dyes from 1, 4-diaminobenzene and 4-amino-3-nitrotoluene and their application on polyester fibre using the thermosol and aqueous dyeing methods. Niger. J. Sci. Environ., 12: 160-166.
26. Otutu, J.O., 2013. A study on tautomeric equilibria of some new 3-chloro-4-fluroaniline monoazo disperse dye derivatives. Niger. J. Sci. Environ., 12: 25-29.
27. Otutu, J.O. and E.M. Efurhievwe, 2013. Synthesis of heterocyclic monoazo disperse dyes derived from 4-Amino-2-chloro-6, 7-dimethoxyquinazoline. J. Applied Sci., 13: 924-928.
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28. Otutu, J.O. and E. Osabohien, 2013. Synthesis and absorption spectra of monoazo dyes derived from 2-methoxy-5-nitroaniline. Asian J. Mater. Sci., 5: 1-8.
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29. Osabohien, E., J.O. Otutu and D.O. Ukponmwan, 2013. Dyeing and colouring using the extract from a plant Bosqueia angolensis. Int. J. Scient. Res., 3: 1-6.
30. Otutu, J.O., E.K. Ossai and M.K. Yakubu, 2012. Synthesis and application of N-phenylnaphthylamine disazo disperse dye derivatives on polyester fibre and nylon 66 fibre. J. Scient. Res., 2: 97-106.
31. Otutu, J.O., 2012. Synthesis of halogenated disazo disperse dyes derived from 2,4-dichloroaniline and 3-aminophenol. Curr. Res. Chem., 4: 119-127.
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32. Otutu, J.O., 2012. Spectroscopic studies of natural dyes from Brosimum rebescens, Acer saccbarium and astonia scholaris. Biosci. Biotechnol. Res. Asia, 9: 647-652.
33. Otutu, J.O., 2012. Extraction and application of natural dyes from Afara (Terminala superb), Albizzia (Albizzi julibibizzin) and Ume (Ancoumea klaiena). Biosci. Biotechnol. Res. Asia, 9: 671-675.
34. Otutu, J.O., 2012. Disazo dyes derived from 2-methyoxy-5-nitroaniline and 3-chloroaniline and their application on polymer-fibres. Orient. J. Chem., 28: 787-794.
35. Otutu, J.O. and E. Osabohien, 2012. Synthesis and absorption characteristics of some disazo dyes derived from 4-amino-3-nitrotoluene and 4-aminobenzoic acid. Niger. J. Sci. Environ., 12: 88-92.
36. Otutu, J., 2012. Thermodynamic absorption parameters of disazo dyes derived from p-aminophenol and 4-aminobenzoic acid on polyester fibre and nylon 6 fibre. Mater. Sci. Res., 9: 61-67.
37. Asiagwu, A.K., H.I. Owamah and J.O. Otutu, 2012. Kinetic model for the sorption of Cu (II) and Zn (II) using lady fern (Athyrium-Filix Femina) leaf waste biomass from aqueous solution. Chem. Process Eng., 3: 1-12.
38. Otutu, J.O., E. Osabohien and E.M. Efurhievwe, 2011. Synthesis and spectral properties of Hetaryl Monoazo dyes derived from 2-amino-5-nitrothiazole. Orient. J. Chem., 27: 1369-1396.
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39. Otutu, J.O., 2011. Synthesis and fastness properties of disazo disperse dyes derived from 4-Amino-3-nitrotoluene. Orient. J. Chem., 27: 937-944.
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40. Otutu, J.O. and M.K. Yakubu, 2011. Extraction, characterization and application of natural dyes from water Opepe (Nuclea diderrichi) and water ekimi (Vanilya planofolica) on natural and synthetic fibres. Biosci. Biotechnol. Res. Asia, 8: 447-454.
41. Otutu, J.O., E. Osabohien and E.M. Efurhievwe, 2010. Synthesis of novel dis-azo dye and an investigation of their use in the textile industry oriental. Orient. J. Chem., 26: 31-38.
42. Otutu, J.O., A.P. Oviawe and D.O. Ukponmwan, 2010. Thermodynamic parameters of disazo disperse dyes derived from 4-amino-3-nitrotoluene on polyester fibre and nylon 6 fibre. Int. J. Chem., 20: 195-203.
43. Jatto, E.O., I.O. Asia, E.E. Egbon, J.O. Otutu, M.E. Chukwuedo and C.J. Ewansiha, 2010. Treatment of waste water from food industry using snail shell. Academia Arena, 2: 32-36.
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44. Oviasogie, P.O. J.O. Otutu and D. Okoro, 2009. Fractionation and distribution of copper and Zinc in calcareous soils of Igara. J. Soil Sci., 19: 96-101.
45. Otutu, J.O., 2009. Halogenated desazo disperse dyes from 4-chloroaniline and 3-chloroaniline. Adv. Natutal Applied Sci. Res., 7: 191-199.
46. Otutu, J.O. and E. Osabohien, 2009. Disperse dyes derived from 2-methoxy-5-nitroaniline. Orient. J. Chem., 25: 863-870.
47. Osabohien, E. and J.O. Otutu, 2009. Application of natural dye extract from the bark of a plant Rhizophora recemosa. Orient. J. Chem., 25: 493-497.
48. Otutu, J.O., D. Okoro and E.K. Ossai, 2008. Preparation of dis-azo dyes derived from p-aminophenol and their fastness properties for synthetic polymer-fibres. J. Applied Sci., 8: 334-339.
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49. Otutu, J.O., A.P. Oviawe and D.O. Ukponmwan, 2008. Physico-chemical studies of disazo disperse dye derivatives of p-aminophenol containing 1, 4-diaminobenzene moiety. J. Chem. Soc. Niger., 32: 99-104.
50. Otutu, J.O., 2008. Light fastness of natural dyes from Danta (Nesogordia perparifera) and Elem (Nimbodia nivea) on cotton, nylon 66 and acrylics. J. Chem. Soc. Niger., 33: 135-138.
51. Otutu, J.O., 2008. Comparison of dyeing properties of disazo disperse dye analogs of 4-amino-3-nitrotoluene with those of 4-aminophenol on polyester substrate. J. Chem. Soc. Nig., 33: 205-212.
52. Otutu, J.O., D.O. Ukponmwan and P.A. Oviavwe, 2007. Synthesis and fastness properties of dis-azo disperse dyes derived from 4-aminophenol. J. Chem. Soc. Nig., 32: 80-90.
53. Otutu, J.O., D.O. Ukponmwan and A.P. Oviawe, 2007. Synthesis and fastness properties of disazo disperse dyes derived from 4-aminophenol for synthetic polymer-fibres. J. Chem. Soc. Nigeria, 33: 65-71.