Заседание на КОЛОКВИУМ "акад. Р. КАИШЕВ" на ИФХ-БАН |
05.02.2025 |
![]() |
Уважаеми колеги, |
Във връзка с гостуването на проф. Svyatoslav Kondrat от Institute of Physical Chemistry, Warsaw и Institut für Computerphysik, Universität Stuttgart по програмата CEEPUS (Central European Exchange Program for University Studies ), на 13.05.2025 (вторник) и на 15.05.2025 (четвъртък) в зала 225, етаж 2, блок 11, Институт по физикохимия, Кампус Гео Милев – БАН ще бъдат изнесени следните лекции: |
1. На 13.05.2025 (вторник) от 10:00 ч (част I) и 14:00 ч (част II):
Electrochemistry of Nanoconfined electrolytes.
2. На 15.05.2025 (четвъртък) от 10:00 ч:
Life in a Crowded Cell: How Macromolecular Crowding shapes Diffusion and Reactions.
1. Electrochemistry of Nanoconfined electrolytes
Conductive nanosized pores are at the heart of cutting-edge science and technology, playing a particularly important role in capacitive energy storage. In these lectures, I will begin with a concise overview of the key properties of room-temperature ionic liquids and concentrated electrolytes, as well as microporous electrodes, central to electrical double-layer capacitors. We will then delve into the fascinating physics of confined ions [1], uncovering phenomena such as the emergence of a superionic state [2], the intriguing effects of ionophobicity [3], and the role of quantum capacitance in electrodes [4]. A central focus will be steps toward maximizing energy storage efficiency [3-6]. Notably, we will reveal the counterintuitive benefits of ionophobic pores [3,7], examine how the separation between electrodes in an electrical double-layer capacitor can influence performance [6], and how low quantum capacitance can paradoxically enhance energy storage [4].
A special focus will be placed on the dynamics of ions, exploring the nuances of in-pore ion mobility [7-9] and the complex charging and discharging behaviors [10,11]. Despite extensive research, a consensus remains elusive regarding ion diffusion, as simulations and experiments present conflicting results [7-9]. We will explore diverse charging regimes [10], revealing how nanopore clogging fundamentally slows the charging process. Finally, I will highlight innovative strategies proposed to accelerate both charging [7,10,11] and discharging [11] dynamics, offering a glimpse into the future of faster, more efficient energy storage solutions.
References:
2. Life in a Crowded Cell: How Macromolecular Crowding shapes Diffusion and Reactions
Diffusion and reactions are fundamental to understanding life. While studies often focus on dilute systems, the interior of living cells presents a stark contrast: it is crowded with macromolecules that occupy 20% to 40% of the cell volume, significantly influencing virtually all intracellular processes [1]. In this talk, I will discuss the diffusion of macromolecules [2-5] and metabolites [6], highlighting key factors relevant to crowded intracellular environments, such as polydispersity of crowders [2], shapes, interactions [3], sizes [6], and flexibilities of macromolecules [4,5]. Additionally, I will examine how crowding impacts biochemical reactions, with a particular focus on enzyme-catalyzed processes [7]. Using a coarse-grained model of immunoglobulins [5], I will demonstrate how crowding conditions influence their diffusion, structural flexibility [5], and binding cooperativity [8].
References: