Artem was born and raised in Voronezh, Russia. He received his master’s degree in physics with honors from Lomonosov Moscow State University in 2013. During his PhD, Artem studied swelling behavior of polyelectrolyte networks under the guidance of Professor Elena Kramarenko at Lomonosov University. He simultaneously developed a theory of non-uniform and non-isotropic swelling of polymer microgels under the co-advisement of Professors Igor Potemkin and Martin Möller in DWI–Leibnitz Institute for Interactive Materials at RWTH Aachen University, Germany. He moved to Pau, France, in 2017, where worked as a postdoctoral researcher in the group of Dr. Oleg Borisov in cooperation with Dr. Ekaterina Zhulina. Artem joined the de Pablo group in November 2018 and is currently a postdoctoral fellow at the Pritzker School of Molecular Engineering working as a theorist on coacervation-related phenomena. In his spare time, he enjoys watching/playing chess and watching ice hockey.
Polyelectrolyte Complex Coacervation. Aqueous solutions of oppositely charged polyelectrolytes undergo liquid-liquid associative phase separation into a highly dilute supernatant and a polymer-rich condensed phase called complex coacervate. Artem uses statistical physics approaches to explore various aspects of this phenomenon, such as (i) liquid crystalline ordering in coacervate containing semiflexible polyelectrolytes, (ii) the effect of the sequence of charges in polyions on the coacervate properties, and (iii) intra-coacervate microphase separation induced by the incompatibility of polyions. To a large extent, this theoretical work is done in the context of the collaboration including simulations and experimental activity of Tirrell Group.
Conformations of Sequence-Specific Polyampholytes. Another direction of Artem’s research is devoted to the single-chain conformational behavior of polyampholytes. Theoretical methods such as the random phase approximation and scaling are combined with coarse-grained computer simulations to reveal the effect of the monomer sequence and global charge of the polyampholytes on the transitions between spherical globular and necklace-like conformations. This work is done in collaboration with Albert Johner (Institut Charles Sadron, Strasbourg).
Sequence blockiness controls the structure of polyampholyte necklaces
Rumyantsev, A.M., Johner, A. and de Pablo, J.J., 2021. Sequence Blockiness Controls the Structure of Polyampholyte Necklaces. ACS macro letters, 10, pp.1048-1054.
Polyelectrolyte Complex Coacervation across a Broad Range of Charge Densities
Neitzel, A.E., Fang, Y.N., Yu, B., Rumyantsev, A.M., de Pablo, J.J. and Tirrell, M.V., 2021. Polyelectrolyte complex coacervation across a broad range of charge densities. Macromolecules, 54(14), pp.6878-6890.
Scaling theory of neutral sequence-specific polyampholytes
Rumyantsev, A.M., Jackson, N.E., Johner, A. and De Pablo, J.J., 2021. Scaling Theory of Neutral Sequence-Specific Polyampholytes. Macromolecules, 54(7), pp.3232-3246.
Polyelectrolyte complex coacervates: Recent developments and new frontiers
Rumyantsev, A.M., Jackson, N.E. and De Pablo, J.J., 2021. Polyelectrolyte Complex Coacervates: Recent Developments and New Frontiers. Annual Review of Condensed Matter Physics, 12, pp.155-176.
Molecular mass dependence of interfacial tension in complex coacervation
Audus, D.J., Ali, S., Rumyantsev, A.M., Ma, Y., de Pablo, J.J. and Prabhu, V.M., 2021. Molecular Mass Dependence of Interfacial Tension in Complex Coacervation. Physical Review Letters, 126(23), p.237801.
Complex coacervation of statistical polyelectrolytes: Role of monomer sequences and formation of inhomogeneous coacervates
Yu, B., Rumyantsev, A.M., Jackson, N.E., Liang, H., Ting, J.M., Meng, S., Tirrell, M.V. and de Pablo, J.J., 2021. Complex coacervation of statistical polyelectrolytes: role of monomer sequences and formation of inhomogeneous coacervates. Molecular Systems Design & Engineering.
Effect of Solvent Quality on the Phase Behavior of Polyelectrolyte Complexes
Lu Li, Artem M Rumyantsev, Samanvaya Srivastava, Siqi Meng, Juan J de Pablo, Matthew V Tirrell. "Effect of Solvent Quality on the Phase Behavior of Polyelectrolyte Complexes", Macromolecules, 2020.
Effect of solvent quality on the phase behaviors in polyelectrolyte complexation
Li, L., Rumyantsev, A.M., Srivastava, S., Meng, S., de Pablo, J.J. and Tirrell, M.V., 2020. Effect of Solvent Quality on the Phase Behavior of Polyelectrolyte Complexes. Macromolecules, 54(1), pp.105-114.
Crossover from Rouse to reptation dynamics in salt-free polyelectrolyte complex coacervates
Yu, B.; Rauscher, P. M.; Jackson, N. E.; Rumyantsev, A. M.; de Pablo, J. J. Crossover from Rouse to reptation dynamics in salt-free polyelectrolyte complex coacervates. ACS Macro Lett. 2020, 9, 1318-1324. Boyuan Yu, Phillip M. Rauscher, Nicholas E. Jackson, Artem M. Rumyantsev, Juan J. de Pablo
Microphase separation in polyelectrolyte blends: Weak segregation theory and relation to nuclear “pasta”
Rumyantsev, A. M.; de Pablo, J. J. Microphase separation in polyelectrolyte blends: Weak segregation theory and relation to nuclear “pasta”. Macromolecules 2020, 53, 1281-1292.