@article{he_freeman_nakpathom_boyle_2015, title={Synthesis and X-ray analysis of a perfluoroalkyl-substituted azobenzene dye}, volume={120}, ISSN={["1873-3743"]}, DOI={10.1016/j.dyepig.2015.04.014}, abstractNote={A search for colorants capable of reducing the surface energy of synthetic fibers as well as adding color led to the synthesis and characterization of the repellency behavior of dyes such as 4-N,N-diethylamino-4′-tridecafluorohexylazobenzene. Unexpectedly high surface energy values and a low fluorine content on fiber surfaces then led to an interest in determining the crystal structure of this new dye. Accordingly, a single crystal was grown from acetone solution, and its structure was established using X-ray diffraction analysis. Interestingly, it was found that the azobenzene skeleton is appreciably nonplanar, having an N2–N1–C1–C2 torsion angle of 30.6°, despite the absence of substituents ortho to the azo bond. Further, the structure is characterized by head-to-tail molecular stacking and the N-ethyl groups in the molecule are positioned above the aminobenzene plane on the same side. It is likely that this combination of factors contribute to the observed surface properties of the target dye.}, journal={DYES AND PIGMENTS}, author={He, Liang and Freeman, Harold S. and Nakpathom, Monthon and Boyle, Paul D.}, year={2015}, month={Sep}, pages={245–250} }
 @article{hinks_draper_el-shafei_nakpathom_che_connelly_2001, title={Radiometric measurement of area lighting critical to color assessment in the textile industry}, volume={1}, number={11}, journal={AATCC Review}, author={Hinks, D. and Draper, S. and El-Shafei, A. and Nakpathom, M. and Che, Q. L. and Connelly, R.}, year={2001}, pages={35–39} }
 @article{nakpathom_hinks_freeman_2001, title={Synthesis and evaluation of organic pigments. 4. New monoarylide and diarylide pigments}, volume={48}, ISSN={["1873-3743"]}, DOI={10.1016/s0143-7208(00)00089-9}, abstractNote={The synthesis, characterization and mutagenicity of a series of diarylide pigments prepared using highly twisted nonmutagenic 2,2′-dimethyl-5,5′-dipropoxybenzidine and 2,2′-dimethoxy-5,5′-dipropoxybenzidine, and their monoarylide counterparts are reported. Five pigments in which nitro groups were incorporated into either the 3- or 4- position of the acetoacetanilide coupling component were mutagenic in either the standard Salmonella mutagenicity assay (Ames test) or the Prival modification. The presence of 3-trifluoromethyl or 3-acetyl groups in the acetoacetanilide moiety led to nonmutagenic pigments. Despite the high dihedral angle across the biphenyl linkage, the λmax of the highly twisted diarylide pigments was significantly bathochromic relative to the corresponding monoarylide pigments.}, number={2}, journal={DYES AND PIGMENTS}, author={Nakpathom, M and Hinks, D and Freeman, HS}, year={2001}, month={Feb}, pages={93–106} }
 @article{hinks_draper_che_nakpathom_el-shafei_connelly_2000, title={Assessment of the effect of lighting variability on color difference}, volume={32}, number={6}, journal={Textile Chemist and Colorist & American Dyestuff Reporter}, author={Hinks, D. and Draper, S. and Che, Q. L. and Nakpathom, M. and El-Shafei, A. and Connelly, R.}, year={2000}, pages={16–20} }
 @article{hinks_freeman_nakpathom_sokolowska_2000, title={Synthesis and evaluation of organic pigments and intermediates. 1. Nonmutagenic benzidine analogs}, volume={44}, ISSN={["0143-7208"]}, DOI={10.1016/S0143-7208(99)00078-9}, abstractNote={The design, synthesis, characterization, and genotoxicity of 4,4′ diaminobiphenyl (benzidine) analogs with substituents in the 3,3′ and/or 2,2′ positions are reported. Analogs containing bulky substituents in the 3,3′ positions significantly reduce or eliminate mutagenic activity, while substituents in the 2,2′-positions increase the dihedral angle across the biphenyl linkage––a property that can be utilized in the design of novel nonmutagenic colorants. 2,2′-Dimethylbenzidine was found to be mutagenic in both the standard Salmonella mammalian mutagenicity assay (Ames test) with metabolic acitivation and the preincubation assay protocol. 2,2′-Dichloro-5,5′-dipropoxybenzidine, 2,2′-dimethoxy-5,5′-dipropoxybenzidine and 2,2′-dimethyl-5,5′-dipropoxybenzidine were nonmutagenic in both assays. The corresponding bis-acetoacetamido derivatives of the latter two compounds were also nonmutagenic. Good yields with minimal purification were obtained for certain diamines, providing potentially useful nongenotoxic intermediates in the synthesis of bisazo and bisazomethine dyes and pigments.}, number={3}, journal={DYES AND PIGMENTS}, author={Hinks, D and Freeman, HS and Nakpathom, M and Sokolowska, J}, year={2000}, month={Feb}, pages={199–207} }