The Preparation of Stable MoS<sub>2</sub> Dispersions by Using Well-Defined Polymers with Pendant Sulfide Moieties
The preparation of stable dispersions of MoS<sub>2</sub> by ultrasonic aqueous and/or organic media containing amphiphilic molecules is an attractive and widely applicable method to form MoS<sub>2</sub> fine particles while suppressing its aggregation. In this study, we devel...
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MDPI AG
2025-05-01
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| author | Jin Motoyanagi Kohei Kawade Masahiko Minoda |
| author_facet | Jin Motoyanagi Kohei Kawade Masahiko Minoda |
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| description | The preparation of stable dispersions of MoS<sub>2</sub> by ultrasonic aqueous and/or organic media containing amphiphilic molecules is an attractive and widely applicable method to form MoS<sub>2</sub> fine particles while suppressing its aggregation. In this study, we developed a series of polymers with pendant sulfide moieties as a new dispersant, under the hypothesis that it would interact with sulfur atoms on MoS<sub>2</sub> surfaces. First, we designed a sulfide group-substituted methacrylate derivative (<b>ESMA</b>) with the hypothesis that it would interact with the MoS<sub>2</sub> surface through sulfur-sulfur interactions. Then, we synthesized well-defined polymers with pendant sulfide groups by living radical polymerization (ATRP). Next, 0.5 wt% MoS<sub>2</sub> was added to a DMSO solution containing 1 wt% of the obtained polymer (poly<b>ESMA</b>), and the mixture was treated with a bath-type ultrasonicator for 3 h to obtain a MoS<sub>2</sub> dispersion. We found that stable dispersions of MoS<sub>2</sub> in a fine particle state, although not in the form of single-layer or few-layer nanosheets, could be readily formed in DMSO using poly<b>ESMA</b> as a polymeric dispersant. Furthermore, we synthesized polymeric dispersants with different molecular weights and investigated the relationship between the structure of the dispersant and the dispersion stability. |
| format | Article |
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| publishDate | 2025-05-01 |
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| spelling | doaj-art-2efae16a92c64defb18bca13ebc457182025-08-20T02:24:19ZengMDPI AGChemistry2624-85492025-05-01738410.3390/chemistry7030084The Preparation of Stable MoS<sub>2</sub> Dispersions by Using Well-Defined Polymers with Pendant Sulfide MoietiesJin Motoyanagi0Kohei Kawade1Masahiko Minoda2Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Graduate School of Science and Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, JapanFaculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Graduate School of Science and Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, JapanFaculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Graduate School of Science and Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, JapanThe preparation of stable dispersions of MoS<sub>2</sub> by ultrasonic aqueous and/or organic media containing amphiphilic molecules is an attractive and widely applicable method to form MoS<sub>2</sub> fine particles while suppressing its aggregation. In this study, we developed a series of polymers with pendant sulfide moieties as a new dispersant, under the hypothesis that it would interact with sulfur atoms on MoS<sub>2</sub> surfaces. First, we designed a sulfide group-substituted methacrylate derivative (<b>ESMA</b>) with the hypothesis that it would interact with the MoS<sub>2</sub> surface through sulfur-sulfur interactions. Then, we synthesized well-defined polymers with pendant sulfide groups by living radical polymerization (ATRP). Next, 0.5 wt% MoS<sub>2</sub> was added to a DMSO solution containing 1 wt% of the obtained polymer (poly<b>ESMA</b>), and the mixture was treated with a bath-type ultrasonicator for 3 h to obtain a MoS<sub>2</sub> dispersion. We found that stable dispersions of MoS<sub>2</sub> in a fine particle state, although not in the form of single-layer or few-layer nanosheets, could be readily formed in DMSO using poly<b>ESMA</b> as a polymeric dispersant. Furthermore, we synthesized polymeric dispersants with different molecular weights and investigated the relationship between the structure of the dispersant and the dispersion stability.https://www.mdpi.com/2624-8549/7/3/84two-dimensional materialsmolybdenum disulfideATRPdispersion |
| spellingShingle | Jin Motoyanagi Kohei Kawade Masahiko Minoda The Preparation of Stable MoS<sub>2</sub> Dispersions by Using Well-Defined Polymers with Pendant Sulfide Moieties Chemistry two-dimensional materials molybdenum disulfide ATRP dispersion |
| title | The Preparation of Stable MoS<sub>2</sub> Dispersions by Using Well-Defined Polymers with Pendant Sulfide Moieties |
| title_full | The Preparation of Stable MoS<sub>2</sub> Dispersions by Using Well-Defined Polymers with Pendant Sulfide Moieties |
| title_fullStr | The Preparation of Stable MoS<sub>2</sub> Dispersions by Using Well-Defined Polymers with Pendant Sulfide Moieties |
| title_full_unstemmed | The Preparation of Stable MoS<sub>2</sub> Dispersions by Using Well-Defined Polymers with Pendant Sulfide Moieties |
| title_short | The Preparation of Stable MoS<sub>2</sub> Dispersions by Using Well-Defined Polymers with Pendant Sulfide Moieties |
| title_sort | preparation of stable mos sub 2 sub dispersions by using well defined polymers with pendant sulfide moieties |
| topic | two-dimensional materials molybdenum disulfide ATRP dispersion |
| url | https://www.mdpi.com/2624-8549/7/3/84 |
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