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SEPAWA 2017 Advancement Award

Lupe

October 19th, 2017

Dr. Leonardo Chiappisi was awarded with a SEPAWA prize in the category "Outstanding Dissertations" for his doctoral thesis on the subject of: "Ionic co-assembly in mixtures of polysaccharides and surfactants”.

Dr. Leonardo Chiappisi receives the prize for best dissertation at the SEPAWA conference in Berlin (on the left: Dr. Lothar Möhle, president of the SEPAWA).
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Reelection

October 10th, 2017

Michael Gradzielski is reelected as deputy chair person of the Kolloid-Gesellschaft.

Personal Details

Lupe

August 2017

The son Kei of Rastko Joksimovic and his wife Akiko is born. Congratulations!

Michael Gradzielski joins the Editorial Board of Gels

July 2017

The cooperation with our partners from the Chilkoti group (Duke University, NC, USA) is progressing well. Resilin-/Elastin-Like Block Copolypeptides are remarkably well defined copolymers with extremely well tunable properties. Small Angle Neutron Scattering (SANS) is a very useful tool to elucidate the structures of their self-assembled aggregates, which is fully controlled by the polymer architecture.

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"Micellar Self-assembly of Recombinant Resilin-/Elastin-Like Block Copolypeptides", Isaac Weitzhandler, Michael Dzuricky, Ingo Hoffmann, Felipe Garcia Quiroz, Michael. Gradzielski, Ashutosh Chilkoti, Biomacromolecules 18, 2419-2426 (2017)

DOI: 10.1021/acs.biomac.7b00589               June 1st, 2017

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"Phase Behavior and Self-Assembly of Perfectly Sequence-Defined and Monodisperse Multiblock Copolypeptides", Sarah R. Ewen, Isaac Weitzhandler, Ingo Hoffmann, Jan Genzer, Michael Gradzielski, Ashutosh Chilkoti, Biomacromolecules 18, 599-609 (2017)

DOI: 10.1021/acs.biomac.6b01759             January 17th, 2017 


Our long time collaboration with the group of Costas Patrickios from Cyprus University delivers new interesting insights into the properties of double-networks and conetworks. The macroscopic elastic properties of these gels can be correlated with the mesoscopic structure as seen by SANS.

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"Double-Networks Based on pH-responsive Amphiphilic “Core-First” Star First Polymer Conetworks Prepared by Sequential RAFT Polymerization", Elina N. Kitiri, Costas S. Patrickios, Chysovalantis Voutouri, Triantafyllos Stylianopoulos, Ingo Hoffmann, Ralf Schweins, Michael Gradzielski, Polymer Chemistry 7, 245-259 (2017)    

DOI: 10.1039/C6PY01340F          September 19th, 2016

 

"Amphiphilic Polymer Conetworks Based on Interconnected Hydrophobic Star Block Copolymers: Synthesis and Characterization", Eleni J. Kepola, Kyriacos Kyriacou, Costas S. Patrickios, Miriam Simon, Michael Gradzielski, Michelle Kushnir, Chrys Wesdemiotis Macromol. Symp. 372, 69-86 (2017)   

DOI: 10.1002/masy.201600172          April 19th, 2017

Recent publications

Lupe

June 2017

"Precipitating Polyelectrolyte–surfactant Systems by Admixing a Nonionic Surfactant – a Case of Cononsurfactancy."

Chiappisi, L.; David Leach, S.; Gradzielski, M. in Soft Matter (2017, 13 (29)).

DOI: 10.1039/C7SM00747G

 

"The surprising formation of water insoluble polyelectrolyte/surfactant complexes upon mixing two homogeneous polycation/anionic surfactant and polycation/nonionic surfactant solutions is reported and explained on the basis of calorimetric and structural investigations. In analogy to cononsolvency, the phenomenon was named cononsurfactanty."

Best Presentation Award

Lupe

April 2017

Kathrin Voigtländer was awarded the Best Presentation Award at the 6th Berlin Chemistry Symposium.

Congratulations!

More about the event: link.

Recent publications

February 24rd, 2017

"Interaction of the signaling state analog and the apoprotein form of the orange carotenoid protein with the fluorescence recovery protein."

Moldenhauer, M.; Sluchanko, N. N.; Tavraz, N. N.; Junghans, C.; Buhrke, D.; Willoweit, M.; Chiappisi, L.; Schmitt, F.-J.; Vukojević, V.; Shirshin, E. A.; Ponomarev, V. Y.; Paschenko, V. Z.; Gradzielski, M.; Maksimov, E. G.; Friedrich, T. in Photosynth. Res. (2017, 1–15).

DOI: 10.1007/s11120-017-0346-2

Recent publications

Lupe

December 22nd, 2016

"PolyWhips: Directional Particle Transport by Gradient-Directed Growth and Stiffening of Supramolecular Assemblies."

Cera, L.; Chiappisi, L.; Böttcher, C.; Schulz, A.; Schoder, S.; Gradzielski, M.; Schalley, C. A. in Advanced Materials (2016)

doi:10.1002/adma.201604430

Growth of rigid rods occurs via supramolecular assembly of a nonconjugated π-donor π-acceptor monomer and is triggered by a NaCl gradient. The mechanical stiffness of this material is controlled by the local salt concentration and is ion specific. The continuous and well-controlled growth process is exploited to power the directional transport of submillimeter polymer particles.

Personal Detail

Lupe

November 2016

Rastko Joksimovic gets married in Sendai to his wife Akiko. Congratulations and Good Luck for the future!

SEPAWA 2016 Advancement Award

Lupe

October 2016

In the category "outstanding graduates with a master's degree", three awards were awarded a prize. The first prize was awarded to Miriam Simon for her work on "Investigations of the interactions of polyelectrolytes with charged microemulsion droplets", prepared at the Technical University of Berlin.

Congratulations!

GDCh 2016 Advancement Award

Lupe

October 2016

Dr. Leonardo Chippisi was awarded the prize of the GDCh in the field of basic research on detergents and cleaning products.

"In his dissertation "Ionic co-assembly in mixtures of polysaccharides and surfactants", Dr. Chiappisi developed directional insights into the synergy between biopolymers and surfactants that could be used in resource-conserving detergents and cleaning agents of the future. The work proves to be of the highest scientific standard and has been published in international journals."

Full text on the GDCh page (in German): link.

Congratulations!

New PhD student

July 18th, 2016

Sebastian Bayer starts as new Ph.D. student. Welcome!

Chem Cup 2016

July 8th, 2016

The PC-Team has the 3rd place at the annual football tournament of the Institute.

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Recent publications

June 23rd, 2016

"Understanding the Formation of Anisometric Supraparticles: A Mechanistic Look Inside Droplets Drying on a Superhydrophobic Surface"

Marcel Sperling, Periklis Papadopoulos, Michael Gradzielski in Langmuir (2016)

DOI: 10.1021/acs.langmuir.6b01236

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Recent publications

June 22nd, 2016

"Development of self-curable hybrid pigment inks by miniemulsion polymerization for inkjet printing of cotton fabrics"

Mahmoud Elgammal, Reinhold Schneider, Michael Gradzielski in Dyes and Pigments (2016)

DOI: 10.1016/j.dyepig.2016.06.033

Award of the Department of Chemistry

June 17th, 2016

Miriam Simon received the Award of the Department of Chemistry for an outstanding master thesis.

Congratulations!

 

Lupe

Recent publications

May 23rd, 2016

"Active Steerable Catalytic Supraparticles Shuttling on Preprogrammed Vertical Trajectories"

M. Sperling, H. -J. Kim, O. D. Velev and M. Gradzielski in Advanced Materials Interfaces (2016)

DOI: 10.1002/admi.201600095

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Recent publications

March 31st, 2016

"A journey through the phase diagram of a pharmaceutically relevant microemulsion system."

Leonardo Chiappisi, Laurence Noirez, Michael Gradzielski in Journal of Colloid and Interface Science  (2016)

DOI: 10.1016/j.jcis.2016.03.064

New PhD student

March 1st, 2016

Miriam Simon starts as new Ph.D. student. Welcome!

PhD thesis defence

February 12th, 2016

Marcel Sperling successfully defends his Ph.D. Thesis:  "Supraparticles by Drying Droplets of Colloidal Suspensions on Superhydrophobic Surfaces"

Congratulations!

New PhD student

January 21st, 2016

Bin Dai starts as new Ph.D. student. Welcome!

Recent publications

September 4th, 2015

"Cationic surfactant systems – thermodynamic and structural conditions revisited."

Leonardo Chiappisi, Hacer Yalcinkaya, Vicknesh Kumar Gopalakrishnan, Michael Gradzielski, Thomas Zemb in Colloid and Polymer Science (2015)

DOI: 10.1007/s00396-015-3739-9

Laundry & Home Care Research Award 2015

August 25th, 2015

Leonardo Chappisi received the Laundry & Home Care Research Award 2015 for an outstanding research work.

Congratulations!

News link

Prof. Dr. Thomas Müller-Kirschbaum (left),  Dr. Michael Dreja, Dr. Leonardo Chiappisi (center)
Prof. Dr. Thomas Müller-Kirschbaum (left), Dr. Michael Dreja, Dr. Leonardo Chiappisi (center)
Lupe

Recent publications

June 21st, 2015

"Aggregation behaviour of hydrophobically modified polyacrylate - Variation of alkyl chain length."

Sven Riemer, Sylvain Prevost, Michaela Dzionara, Marie-Sousai Appavou, Ralf Schweins, Michael Gradzielski

in Polymer (2015)

DOI: 10.1016/j.polymer.2015.06.010

Lupe

Recent publications

April 27th, 2015

Review on the properties of chitosan - surfactant mixtures.

"Co-Assembly in Chitosan–surfactant Mixtures: Thermodynamics, Structures, Interfacial Properties and Applications."

Chiappisi, L.; Gradzielski, M., Advances in Colloid Interface Science (2015)

DOI: 10.1016/j.cis.2015.03.003

Recent publications

March 12th, 2015

On the use of pH-responsive chitosan - surfactant system for the selective recovery of various pollutants.

"Toward Bioderived Intelligent Nanocarriers for Controlled Pollutant Recovery and pH-Sensitive Binding."

Chiappisi, L.; Simon, M.; Gradzielski, M., ACS Applied Materials & Interfaces (2015)

DOI: 10.1021/am508846r

Lupe

Recent publications

March 2nd, 2015

"Understanding and Optimizing Microemulsions with Magnetic Room Temperature Ionic Liquids (MRTILs)"

A. Klee, S. Prévost, U. Gasser, M. Gradzielski, J. Phys. Chem. (2015)                             

DOI: 10.1021/jp512545c

Habilitation

February 2nd, 2015

Dr. Cristina Giordano successfully completed her demonstration lesson at the University Potsdam.

Congratulations!

Recent publications

January 29th, 2015

Neutron scattering (SANS) can contribute to clarifying the structure of aggregates formed by novel elastin like polymers (ELSs) that are produced in a very well-defined fashion by the Chilkoti group (Duke University, NC, USA).

"Non-canonical Self-Assembly of Highly Asymmetric Genetically Encoded Polypeptide Amphiphiles into Cylindrical Micelles"

J.R. McDaniel, I. Weitzhandler, S. Prévost, K.B. Vargo, M.-S. Appavou, D.A. Hammer, M. Gradzielski, A. Chilkoti Nano Letters 14, 6590-6598 (2014)                             

DOI: 10.1021/nl503221p

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New master student

Lupe

January 19th, 2015

Andrea Victoria Vela Gonzales starts as a master student. Welcome!

Recent publications

January 19th, 2015

"Enhanced Ultrafiltration (MEUF) of Metal Cations with Oleylethoxycarboxylate.",Schwarze, M.; Groß, M.; Moritz, M.; Buchner, G.; Kapitzki, L.; Chiappisi, L.; Gradzielski, M. Micellar

Journal of Membrane Science doi:10.1016/j.memsci.2015.01.010

Use of a multiresponsive surfactant for the separation and recovey of metal cations.

Recent publications

January 15th, 2015

"Formation of anisometric fumed silica supraparticles mechanism and application potential."
Special Issue: Self-Assembled Soft Matter Nano-Structures at Interfaces Dedicated to Gerhard Findenegg on the occasion of his 75th birthday.

M. Sperling, O. D. Velev and M. Gradzielski; Zeitschrift für Physikalische Chemie (2015)

DOI: 10.1515/zpch-2014-0545

Recent publications

Lupe

November 21st, 2014

"Self-Assembly of Imidazolium-Based Surfactants in Magnetic Room-Temperature Ionic Liquids: Binary Mixtures", Andreas Klee, Dr. Sylvain Prevost and Prof. Dr. Michael Gradzielski

 

 

ChemPhysChem doi: 10.1002/cphc.201402548

New PhD student

Lupe

November 10th, 2014

Esra Oğuztürk starts as new Ph.D. student. One more Welcome!

Student assistant

Lupe

November 1st, 2014

Vivian Spiering starts as new student co-worker. Welcome!

PhD thesis defence

Lupe

October 23rd, 2014

Michael Muthig successfully defends his Ph.D. Thesis:  " Complex SANS/SAXS Data Evaluation, Simulation and Interpretation with Regard to Statistical Inference"

Congratulations!

SEPAWA Award

Lupe

Oktober 16th, 2014

Katharina Bressel received the SEPAWA Award for an outstanding PhD thesis.

Congratulations!

Recent publications

Lupe

September 26th, 2014

How do silica nanoparticles cross phospholipid membranes and form interesting hybrid nanoparticles? Finding it out by combining light scattering (SLS, DLS) and cryo transmission electron microscopy (cryo-TEM). 

"Internalization of Silica Nanoparticles into Fluid Liposomes: Formation of Interesting Hybrid Colloids", Dr. Raphael Michel, Dr. Ellina Kesselman, Tobias Plostica, Prof. Dr. Dganit Danino and Prof. Dr. Michael Gradzielski
                                                 
Angewandte Chemie 126, 12649-12653 (2014) doi: 10.1002/ange.201406927           
Angew. Chem. Int. Ed. 46, 12441-12445 (2014) doi: 10.1002/anie.201406927

Recent publications

Lupe

September 9th, 2014

"From crab shells to smart systems: chitosan-alkylethoxy carboxylate complexes", Chiappisi, L.; Prevost, S.; Grillo, I.; Gradzielski, M.                                                 

Langmuir 2014, 30, 10608–10616. doi: 10.1021/la502569p

Recent publications

Lupe

May 2014

Making Fancy Structured Films by a Simple Method of Colloidal Coassembly of DNA and Silica Nanoparticles

"Self-organized patterning through the dynamic segregation of DNA and silica nanoparticles", R. Joksimovic, S. Watanabe, S. Riemer, M. Gradzielski, K. Yoshikawa, Sci. Rep. (Nature) 4, 3600 (2014) doi: 10.1038/srep03660

Master theses in May

Mai 8th, 2014

Md Asadujjaman defends successfully his Master Thesis: "The effect of hydrophobically modified polyacrylic acid on cationic vescicles" and has obtained now his degree as Master of Science in Polymer Chemistry.

Congratulations!

Recent publications

April 2014

"Form factor of cylindrical superstructures composed of globular particles.", Chiappisi, L.; Prévost, S.; Gradzielski, M.
Journal of Applied Crystallography 2014, 47. doi:10.1107/S1600576714005524

Recent publications

February 3th, 2014

"Chitosan/Alkylethoxy Carboxylates - A Surprising Variety of Structures.", Chiappisi, L.; Prevost, S.; Grillo, I.; Gradzielski, M.
Langmuir 2014. doi: 10.1021/la404718e


Februar 7th, 2014

"Oleylethoxycarboxylate - An Efficient Surfactant for Copper Extraction and Surfactant Recycling via Micellar Enhanced Ultrafiltration.", Schwarze, M.; Chiappisi, L.; Prévost, S.; Gradzielski, M. Journal of Colloid and Interface Science 2014. doi: 10.1016/j.jcis.2014.01.037

Recent publications

Lupe

January 13th, 2014

Bringing Particles into Shape

"Controlling the Shape of Evaporating Droplets by Ionic Strength: Formation of Highly Anisometric Silica Supraparticles", M. Sperling, O. Velev, M. Gradzielski
Angew. Chem. 126, 597-601 (2014) DOI: 10.1002/ange.201307401
Angew. Chem., Int. Ed. 53, 586-590 (2014) DOI: 10.1002/anie.201307401

Klaus-Koch-Scholarship

Miriam Simon received a scholarship of the Klaus-Koch-Foundation for the year 2013.

The Klaus-Koch-Scholarship has been awarded each year since 1963 in remembrance of the birthday of Klaus Koch on 9th December, a former chemistry student fallen in 1940. The scholarhip supports gifted students of the chemistry.

Recent publications

Lupe

December 10th, 2013

How to Describe the Binding of Surfactants to Polyelectrolytes in a Thermodynamic Consistent Way

"An Improved Method for Analyzing Isothermal titration calorimetry from Surfactant Polyelectrolyte Mixtures", L. Chiappisi, D. Li, N.J. Wagner, M. Gradzielski, J. Chem. Thermodyn. 68, 48-52 (2014) DOI: 10.1016/j.jct.2013.08.027

Recent publications

Lupe

December 1st, 2013

Using the Microwave to Make Small Ru Nanoparticles Capable of Degredating Pollutants

"Microwave-Assisted Synthesis of Small Ru Nanoparticles and Their Role in Degradation of Congo Red", S. Gupta, C. Giordano, M. Gradzielski, S.K. Mehta, J. Coll. Interface Sci. 411, 173-181, (2013) doi: 10.1016/j.jcis.2013.08.030

Bachelor theses in November

Anja von Lospichl: "Structural investigation of complexes with hydrophobic domains in mixtures of an anionic statistical copolymer with oppositely charged surfactant in aqueous solution" (04.11.2013)

Miriam Simon: "Strukturelle Untersuchung der Komplexbildung von modifiziertem Chitosan mit entgegengesetzt geladenem Tensid" (15.11.2013)

Prof. Dr. Gerhard Findenegg's 75th birthday

Prof. Dr. Gerhard Findenegg
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Prof. Dr. Gerhard Findenegg celebrated his 75th birthday on November 16. Happy birthday!

Prof. Findenegg has been working in the field of physical chemistry, in particular in the range of colloidal systems and interfaces research, at the Technische Universität Berlin since 1991. He was the dean of the chemistry department, spokesman of the collaborative research centre 448 "Mesoscopically organised composites" and he was for many years one of the editors of the journal "Advances in Colloid and Interface Science" before his retirement. Currently, he is taking an active part as a project supervisor in the Intl. Graduate Research Training Group 1524 "SSNI – Self-Assembled Soft Matter Nano-Structures at Interfaces".

Recent publications

October 2nd, 2013

Making Raspberry-like Hybrid Nanoparticles

"Synthesis of Silica Nanoparticles Covered with Silver Beads", R. Joksimovic, B. Altin, S.K. Metha, M. Gradzielski, J. Nanosci. Nanotechnol. 13, 6773-6781 (2013)


October 5th, 2013

A Program for Analysing large Sets of Complex Scattering data

"SASET – A Program for Series Analysis of Small-Angle Scattering Data", M. Muthig, S. Prévost, R. Orglmeister, M. Gradzielski, J. Appl. Cryst. 46, 1187-1195 (2013), DOI: 10.1107/S0021889813016658


November 15th, 2013

What is a polyelectrolyte doing in a surfactant/polyelectrolye complex on very short time scales?

"Structure and dynamics of polyelectrolytes in viscous polyelectrolyte-surfactant complexes at the mesoscale", I. Hoffmann, B. Farago, R. Schweins, P. Falus, M. Sharp, M. Gradzielski, Eur. Phys. Lett. 104, 28001 (2013) DOI: 10.1209/0295-5075/104/28001

Recent publications

Lupe

April 28th, 2013

Decorating and Stabilizing Liposomes with Small Nanoparticles

"Control of Stability and Structure of Liposomes by Means of Nanoparticles", R. Michel, T. Plostica, L. Abezgauz, D. Danino, M. Gradzielski, Soft Matter 9, 4167-4177 (2013), DOI: 10.1039/C3SM27875A

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