Article
Polymer Science
Martin Wengenmayr, Ron Dockhorn, Jens-Uwe Sommer
Summary: This study investigates the size of multimolecular micelles formed by linear-dendritic copolymers in selective solvents, and reveals the possibility of controlling the size and shape of dendritic structures by tuning molecular parameters. The unique property of linear-dendritic copolymers, with a small number of molecules per micelle, can be discretely switched by changing the solvent properties.
Review
Biochemistry & Molecular Biology
Serge Mignani, Xiangyang Shi, Maria Zablocka, Jean-Pierre Majoral
Summary: Polymeric micelles are nanoassemblies formed by amphiphilic block copolymers in aqueous solutions, used for drug delivery. Polyion complexes (PICs) morphology depends on polyelectrolytes topology and assembly, with stability issues overcome by increasing dendritic architecture rigidity and controlling dendrimer quantity. This stable nanoassemblies' preparation, molecular characteristics, and pharmacological profile are highlighted.
Article
Polymer Science
Huiying Wang, Qiang Chen, Zhen Geng, Jingyi Rao, Bijin Xiong, Frederic Lortie, Julien Bernard, Wolfgang H. Binder, Senbin Chen, Jintao Zhu
Summary: By introducing 2,6-diaminopyridine moieties and H-bonding amphiphilic interactions, a simple and effective self-assembly strategy was designed to form giant vesicles with a diameter of approximately 3 μm, providing a new opportunity for the design of supramolecular polymers.
Article
Polymer Science
Tomohiro Miyata, Hsiao-Fang Wang, Takafumi Suenaga, Daisuke Watanabe, Hironori Marubayashi, Hiroshi Jinnai
Summary: Double-gyroid (DG) structured materials, with their unique three-dimensional network structures, show great promise for various applications. However, defects in these structures can significantly impact material properties. In this study, structural defects in a self-assembled DG structure of polystyrene-block-polyisoprene were observed using three-dimensional transmission electron microtomography. By characterizing the crystallography of the defects, it was found that multiple defect formation mechanisms coexist in self-assembled DG structures.
Article
Chemistry, Multidisciplinary
Aritra Sarkar, Ranjan Sasmal, Angshuman Das, Akhil Venugopal, Sarit S. Agasti, Subi J. George
Summary: The synthesis of supramolecular block co-polymers with small monomers and predictive sequence requires elegant molecular design and synthetic strategies. A kinetically controlled sequential seeded supramolecular polymerization method was reported to synthesize tri-component supramolecular BCPs with tunable microstructure, with the use of fluorescent pi-conjugated monomers and core-substituted naphthalene diimide derivatives. This method provides a promising platform for constructing unique functional organic heterostructures for various optoelectronic and catalytic applications.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Polymer Science
Rocco Di Girolamo, Chiara Santillo, Anna Malafronte, Miriam Scoti, Fabio De Stefano, Giovanni Talarico, Geoffrey W. Coates, Claudio De Rosa
Summary: Isotactic polypropylene-block-polyethylene block copolymers were synthesized and their crystallization behavior was studied. It was found that polyethylene blocks crystallize first, followed by the nucleation of polypropylene blocks. The polyethylene lamellar stacks have a higher periodicity of 30 nm, while the polypropylene lamellar stacks have a lower periodicity of 11-12 nm. The crystallization of the copolymer drives microphase separation and leads to a lamellar morphology.
Article
Polymer Science
Xiaolin Lyu, Hanlin Huang, Zhehao Tang, Longfei Luo, Wenjun Luo, Yan Yu, Zhihao Shen, Xing-He Fan, Zhigang Zou
Summary: This study successfully prepared three-dimensional hexagonal and hexagram prisms with uniform dimensions by crystallizing TPP and a block copolymer, and explored their growth mechanism. The results indicate that crystalline TPP plays an important role in the self-assembly process, and the faceted morphologies of the prisms are infrequent in the field of soft materials.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Yike Yao, Liang Gao, Chunhua Cai, Jiaping Lin, Shaoliang Lin
Summary: Introducing a second component is an effective way to manipulate polymerization behavior. However, this phenomenon has rarely been observed in colloidal systems, such as polymeric nanoparticles. Here, we report the supramolecular polymerization of polymeric nanorods mediated by block copolymers. Experimental observations and simulation results illustrate that block copolymers surround the polymeric nanorods and mainly concentrate around the two ends, leaving the hydrophobic side regions exposed. These polymeric nanorods connect in a side-by-side manner through hydrophobic interactions to form bundles. As polymerization progresses, the block copolymers gradually deposit onto the bundles and finally assemble into helical nanopatterns on the outermost surface, which terminates the polymerization. It is anticipated that this work could offer inspiration for a general strategy of controllable supramolecular polymerization.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Polymer Science
Frank Hartmann, Bart-Jan Niebuur, Marcus Koch, Tobias Kraus, Markus Gallei
Summary: A second-generation dendrimer-like block copolymer structure ((AB)2B)3 is described in this study, which is expected to have a larger geometric range for the gyroid phase. Three compositionally different polymers are synthesized and their morphology is analyzed. The influence of the dendrimer-like BCP architecture on microphase separation is investigated, providing a platform for studying interesting mechanical and optical properties.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Qiuya Zhang, Mengfan Lu, Hanyu Wu, Lu Zhang, Xunda Feng, Zhaoxi A. Jin
Summary: In this study, inverse micellar nanostructures with open channels were successfully generated using a modified solvent exchange method. The addition of D-tartaric acid induced the formation of mesoporous spheres with regularly packed perpendicular cylindrical channels and subsequently mesoporous spheres with gyri-like open pores. The findings provide a simple and economical pathway for fabricating hexasomes with open channels, which could be beneficial for their further applications.
Article
Polymer Science
Yiman Wei, Shuquan Cui, Lin Yu, Jiandong Ding
Summary: Biodegradable polymers are important materials, especially in the field of biomedical applications. In this study, a hydrolyzable amphiphilic copolymer was examined and a phenomenon called degradation-influenced/induced self-assembly (DISA) was observed. The study also showed that the extent of degradation is influenced by the molecular weight and dispersity of the copolymer.
Article
Polymer Science
Wei Cao, Liangxiao Tan, Hong Wang, Jiayin Yuan
Summary: Dual-cationic PIL homopolymers carrying both imidazolium and 1,2,4-triazolium moieties were synthesized by exploiting the reactivity difference, leading to the expansion of their application spectrum.
Article
Polymer Science
Yiman Wei, Shuquan Cui, Lin Yu, Jiandong Ding
Summary: Biodegradable polymers, especially biomedical materials, play a significant role in the development of new materials. This study focused on the reorganization of hydrolyzable amphiphilic block copolymers during degradation in water, leading to degradation-influenced/induced self-assembly (DISA). Dynamic Monte Carlo simulations and experimental validations revealed three types of self-assembly processes. The findings demonstrate that degradation can be used as a novel strategy to influence the hierarchical self-assembly of amphiphilic block copolymer chains.
Review
Pharmacology & Pharmacy
Matthew J. Webber, E. Thomas Pashuck
Summary: Hydrogels prepared via self-assembly offer scalable and tunable platforms for drug delivery applications. Peptides are widely used as building blocks for self-assembly, while stimuli-responsive self-assembly provides opportunities for more precise drug action. Double-network hydrogels combine the beneficial properties of both self-assembled and covalent networks.
ADVANCED DRUG DELIVERY REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Kyung Gook Cho, Sol An, Dae Hyun Cho, Jeong Hui Kim, Jieun Nam, Myungwoong Kim, Keun Hyung Lee
Summary: This study demonstrated the development of freestanding, stretchable, and self-adhesive ionogel conductors for wearable and stretchable on-skin motion sensors. These ionogels exhibit superior adhesive characteristics and high ionic conductivity, enabling intimate contact between the sensor and skin during dynamic movement, providing accurate monitoring of body parts.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Infectious Diseases
Jan P. Boettcher, Yubaraj Siwakoti, Ana Milojkovic, Niyamat A. Siddiqui, Chitra K. Gurung, Suman Rijal, Pradeep Das, Axel Kroeger, Megha R. Banjara
BMC INFECTIOUS DISEASES
(2015)
Editorial Material
Public, Environmental & Occupational Health
Johannes Sommerfeld, Axel Kroeger
TRANSACTIONS OF THE ROYAL SOCIETY OF TROPICAL MEDICINE AND HYGIENE
(2015)
Article
Public, Environmental & Occupational Health
Andrea Caprara, Jose Wellington De Oliveira Lima, Ana Carolina Rocha Peixoto, Cyntia Monteiro Vasconcelos Motta, Joana Mary Soares Nobre, Johannes Sommerfeld, Axel Kroeger
TRANSACTIONS OF THE ROYAL SOCIETY OF TROPICAL MEDICINE AND HYGIENE
(2015)
Article
Public, Environmental & Occupational Health
Cesar Basso, Elsa Garcia da Rosa, Sonnia Romero, Cristina Gonzalez, Rosario Lairihoy, Ingrid Roche, Ruben M. Caffera, Ricardo da Rosa, Marisel Calfani, Eduardo Alfonso-Sierra, Max Petzold, Axel Kroeger, Johannes Sommerfeld
TRANSACTIONS OF THE ROYAL SOCIETY OF TROPICAL MEDICINE AND HYGIENE
(2015)
Article
Public, Environmental & Occupational Health
Azael Che-Mendoza, Guillermo Guillermo-May, Josue Herrera-Bojorquez, Mario Barrera-Perez, Felipe Dzul-Manzanilla, Cipriano Gutierrez-Castro, Juan I. Arredondo-Jimenez, Gustavo Sanchez-Tejeda, Gonzalo Vazquez-Prokopec, Hilary Ranson, Audrey Lenhart, Johannes Sommerfeld, Philip J. McCall, Axel Kroeger, Pablo Manrique-Saide
TRANSACTIONS OF THE ROYAL SOCIETY OF TROPICAL MEDICINE AND HYGIENE
(2015)
Review
Public, Environmental & Occupational Health
Olaf Horstick, Thomas Jaenisch, Eric Martinez, Axel Kroeger, Lucy Lum Chai See, Jeremy Farrar, Silvia Runge Ranzinger
AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE
(2014)
Article
Infectious Diseases
Juliana Quintero, Helena Brochero, Pablo Manrique-Saide, Mario Barrera-Perez, Cesar Basso, Sonnia Romero, Andrea Caprara, Jane Cris De Lima Cunha, Efrain Beltran-Ayala, Kendra Mitchell-Foster, Axel Kroeger, Johannnes Sommerfeld, Max Petzold
BMC INFECTIOUS DISEASES
(2014)
Article
Public, Environmental & Occupational Health
Catrin H. Jones, David Benitez-Valladares, Guillermo Guillermo-May, Felipe Dzul-Manzanilla, Azael Che-Mendoza, Mario Barrera-Perez, Celia Selem-Salas, Juan Chable-Santos, Johannes Sommerfeld, Axel Kroeger, Timothy O'Dempsey, Anuar Medina-Barreiro, Pablo Manrique-Saide
Article
Multidisciplinary Sciences
Jahanara Khatun, M. Mamun Huda, Md. Shakhawat Hossain, Wolfgang Presber, Debashis Ghosh, Axel Kroeger, Greg Matlashewski, Dinesh Mondal
Article
Public, Environmental & Occupational Health
S. Runge-Ranzinger, P. J. McCall, A. Kroeger, O. Horstick
TROPICAL MEDICINE & INTERNATIONAL HEALTH
(2014)
Editorial Material
Public, Environmental & Occupational Health
Greg Matlashewski, Byron Arana, Axel Kroeger, Ahmed Be-Nazir, Dinesh Mondal, Shan Golam Nabi, Megha Raj Banjara, Murari Lal Das, Baburam Marasini, Pradeep Das, Graham Medley, Abhay Satoskar, Hira Nakhasi, Daniel Argaw, John Reeder, Piero Olliaro
LANCET GLOBAL HEALTH
(2014)
Article
Immunology
Pablo Manrique-Saide, Azael Che-Mendoza, Mario Barrera-Perez, Guillermo Guillermo-May, Josue Herrera-Bojorquez, Felipe Dzul-Manzanilla, Cipriano Gutierrez-Castro, Audrey Lenhart, Gonzalo Vazquez-Prokopec, Johannes Sommerfeld, Philip J. McCall, Axel Kroeger, Juan I. Arredondo-Jimenez
EMERGING INFECTIOUS DISEASES
(2015)
Article
Immunology
Vijay Kumar, Shreekant Kesari, Rajib Chowdhury, Sanjiv Kumar, Gunjan Sinha, Saddam Hussain, M. Mamun Huda, Axel Kroeger, Pradeep Das
INDIAN JOURNAL OF MEDICAL RESEARCH
(2013)
Article
Immunology
Dinesh Mondal, M. Mamun Huda, Mithun Kumar Karmoker, Debashis Ghosh, Greg Matlashewski, Shah Golam Nabi, Axel Kroeger
EMERGING INFECTIOUS DISEASES
(2013)
Article
Public, Environmental & Occupational Health
Eva-Maria Maintz, Mahbub Hassan, M. Mamun Huda, Debashis Ghosh, Md. Shakhawat Hossain, Abdul Alim, Axel Kroeger, Byron Arana, Dinesh Mondal
JOURNAL OF TROPICAL MEDICINE
(2014)