Tomasz K. Piskorz
Delft University of Technology
Self-healing hydrogelsLength scaleBrownian motionHydrogen bondAnalytical chemistryStatistical physicsDiffusion (business)Mechanism (philosophy)Fluorescence correlation spectroscopyKineticsAdsorptionChemical physicsDesorptionGaussianAnomalous diffusionTripeptideCover (topology)Organic chemistryMolecular modelDephosphorylationAqueous solutionChemistryBiological systemMaterials scienceMonte Carlo methodSelf-assemblyPolyethylene glycolScientific methodEmulsionGraphiteAdaptive samplingRestricted DiffusionMolecular simulationKinetic controlSupramolecular hydrogelsMoleculeComputer scienceLevel of detailChemical engineeringProcess (engineering)Phase (matter)PolymerAutocorrelationPEG ratioDopingMolecular dynamicsNucleationOstwald ripeningScanning tunneling microscopeAmphiphileMonolayerLamellar structureNanofiberSupramolecular chemistry
9Publications
4H-index
44Citations
Publications 9
Newest
#1Qian Liu (TU Delft: Delft University of Technology)H-Index: 99
#2Zhenyu Yuan (ECUST: East China University of Science and Technology)H-Index: 8
Last. Jan H. van Esch (TU Delft: Delft University of Technology)H-Index: 53
view all 10 authors...
Reported here is a 2D, interfacial microcompartmentalization strategy governed by 3D phase separation. In aqueous polyethylene glycol (PEG) solutions doped with biotinylated polymers, the polymers spontaneously accumulate in the interfacial layer between the oil-surfactant-water interface and the adjacent polymer phase. In aqueous two-phase systems, these polymers first accumulated in the interfacial layer separating two polymer solutions and then selectively migrated to the oil-PEG interfacial ...
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#1Yiming Wang (ECUST: East China University of Science and Technology)H-Index: 13
#2Tomasz K. Piskorz (TU Delft: Delft University of Technology)H-Index: 4
Last. Jan H. van Esch (TU Delft: Delft University of Technology)H-Index: 53
view all 7 authors...
Here, transient supramolecular hydrogels that are formed through simple aging-induced seeded self-assembly of molecular gelators are reported. In the involved molecular self-assembly system, multicomponent gelators are formed from a mixture of precursor molecules and, typically, can spontaneously self-assemble into thermodynamically more stable hydrogels through a multilevel self-sorting process. In the present work, it is surprisingly found that one of the precursor molecules is capable of self...
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#1Yiming WangH-Index: 13
#2Tomasz K. PiskorzH-Index: 4
Last. J. H van EschH-Index: 23
view all 7 authors...
Here, transient supramolecular hydrogels that are formed through simple aging-induced seeded self-assembly of molecular gelators are reported. In the involved molecular self-assembly system, multicomponent gelators are formed from a mixture of precursor molecules and, typically, can spontaneously self-assemble into thermodynamically more stable hydrogels through a multilevel self-sorting process. In the present work, it is surprisingly found that one of the precursor molecules is capable of self...
#1Tomasz K. PiskorzH-Index: 4
In this thesis, we explore the application of various molecular simulations techniques to give insights into the self-assembly of supramolecular systems. Chapter 1 explains the importance of molecular simulation to study the selfassembly process. In chapter 2 we study self-assembly of a derivative of 1,3,5-triamidocyclohexane (CTA) using common techniques: simulations of selfassembly from randomly distributed molecules and simulations of the final structure. The results show the importance of th...
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#1Tomasz K. Piskorz (TU Delft: Delft University of Technology)H-Index: 4
#2Cristian Gobbo (TU Delft: Delft University of Technology)H-Index: 4
Last. Jan H. van Esch (TU Delft: Delft University of Technology)H-Index: 53
view all 6 authors...
Coarse-grained molecular dynamics simulations are employed to obtain a detailed view of the formation of long-range ordered lamellar structures of physisorbed self-assembling long functionalized alkanes on graphite. During the self-assembly, two processes take place: Langmuir preferential adsorption and rearrangement on the surface. The rearrangement starts with nucleation, in which molecules create an ordered domain. The nucleation mechanism is temperature dependent. At lower temperature indepe...
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#1Tomasz K. Piskorz (TU Delft: Delft University of Technology)H-Index: 4
#2Alex H. de Vries (UG: University of Groningen)H-Index: 27
Last. Jan H. van Esch (TU Delft: Delft University of Technology)H-Index: 53
view all 4 authors...
Ostwald ripening can improve the long-range order of self-assembled monolayers by the growth of large domains and disassembly of smaller ones. Here, coarse-grained molecular dynamics simulations are used to study the dynamics of the stable assembly and the coarsening of defects of physisorbed monolayers of long-chain functionalized alkanes. Our results show that the partial desorption from the surface of one or more adsorbent molecules is the essential process that allows other adsorbent molecul...
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#1Tomasz K. PiskorzH-Index: 4
#2Alex H. de VriesH-Index: 27
Last. Jan H. van EschH-Index: 53
view all 4 authors...
Ostwald ripening can improve the long-range order of self-assembled monolayers by the growth of large domains and disassembly of smaller ones. Here, coarse-grained molecular dynamics simulations are used to study the dynamics of the stable assembly and the coarsening of defects of physisorbed monolayers of long-chain functionalized alkanes. Our results show that the partial desorption from the surface of one or more adsorbent molecules is the essential process that allows other adsorbent molecul...
#1Inês P. MoreiraH-Index: 5
#2Tomasz K. Piskorz (TU Delft: Delft University of Technology)H-Index: 4
Last. Rein V. UlijnH-Index: 63
view all 5 authors...
We report on the biocatalytic activation of a self-assembling (unprotected) tripeptide to stabilize oil-in-water emulsions on-demand. This is achieved by the conversion of a phosphorylated precursor into a hydrogelator using alkaline phosphatase (AP) as the trigger. The rate of conversion, controlled by the amount of enzyme used, is shown to play a key role in dictating the morphology of the nanofibrous networks produced. When these amphiphilic tripeptides are used in biphasic mixtures, nanofibe...
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Fluorescence correlation spectroscopy (FCS) is frequently used to study the processes of restricted diffusion. The most important quantity to determine is the size of the structures that hinder the Brownian motion of the molecules. We study three qualitatively different models of restricted diffusion, widely applied in biophysics and material science: Diffusion constrained by elastic force (i), walking confined diffusion (ii), and hop diffusion (iii). They cover the diversity of statistical beha...
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