Initial Studies Directed toward the Rational Design of Aqueous Graphene Dispersants
| العنوان: | Initial Studies Directed toward the Rational Design of Aqueous Graphene Dispersants |
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| المؤلفون: | Heard, Kane W.J., Bartlam, Cian, Williams, Christopher D., Zhang, Junru, Alwattar, Aula A., Little, Mark S., Parry, Adam V.S., Porter, Fiona M., Vincent, Mark A., Hillier, Ian H., Siperstein, Flor R., Vijayaraghavan, Aravind, Yeates, Stephen G., Quayle, Peter |
| المصدر: | ACS Omega, Vol 4, Iss 1, Pp 1969-1981 (2019) ACS Omega Heard, K W J, Bartlam, C, Williams, C D, Zhang, J, Alwattar, A A, Little, M S, Parry, A V S, Porter, F M, Vincent, M A, Hillier, I H, Siperstein, F R, Vijayaraghavan, A, Yeates, S G & Quayle, P 2019, ' Initial Studies Directed toward the Rational Design of Aqueous Graphene Dispersants ', ACS Omega, vol. 4, no. 1, pp. 1969-1981 . https://doi.org/10.1021/acsomega.8b03147Test |
| بيانات النشر: | American Chemical Society, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | lcsh:Chemistry, ResearchInstitutes_Networks_Beacons/dalton_nuclear_institute, National Graphene Institute, lcsh:QD1-999, Manchester Institute of Biotechnology, ResearchInstitutes_Networks_Beacons/national_graphene_institute, Dalton Nuclear Institute, ResearchInstitutes_Networks_Beacons/manchester_institute_of_biotechnology, Article |
| الوصف: | This study presents preliminary experimental data suggesting that sodium 4-(pyrene-1-yl)butane-1-sulfonate (PBSA), 5, an analogue of sodium pyrene-1-sulfonate (PSA), 1, enhances the stability of aqueous reduced graphene oxide (RGO) graphene dispersions. We find that RGO and exfoliated graphene dispersions prepared in the presence of 5 are approximately double the concentration of those made with commercially available PSA, 1. Quantum mechanical and molecular dynamics simulations provide key insights into the behavior of these molecules on the graphene surface. The seemingly obvious introduction of a polar sulfonate head group linked via an appropriate alkyl spacer to the aromatic core results in both more efficient binding of 5 to the graphene surface and more efficient solvation of the polar head group by bulk solvent (water). Overall, this improves the stabilization of the graphene flakes by disfavoring dissociation of the stabilizer from the graphene surface and inhibiting reaggregation by electrostatic and steric repulsion. These insights are currently the subject of further investigations in an attempt to develop a rational approach to the design of more effective dispersing agents for rGO and graphene in aqueous solution. |
| اللغة: | English |
| تدمد: | 2470-1343 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=pmid_dedup__::edb2be37506e275cadbc30d56c75d7deTest https://doaj.org/article/481c05b17f714a30b581d092749b4539Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.pmid.dedup....edb2be37506e275cadbc30d56c75d7de |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 24701343 |
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