Article
Chemistry, Multidisciplinary
Melissa A. Reith, Irene De Franceschi, Matthieu Soete, Nezha Badi, Resat Aksakal, Filip E. Du Prez
Summary: The study proposes a robust strategy for the synthesis of sequence-defined, discrete star-shaped macromolecules. The iterative approach allows for the preparation of asymmetrically branched macromolecules with high purity and yields, enabling sequence definition, precise insertion of branching points, and orthogonal end-group functionalization.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Polymer Science
Wei Liu, Xiang Xu, Siqing He, Rui Sun, Qi Chen, Jie Min, Zhiguo Zhang, Jun Yuan, Yongfang Li, Yingping Zou
Summary: This study reports a new three-arm star-shaped quasi-macromolecule acceptor TBT and compares it with the traditional linear molecule acceptor DBT. The results show that TBT has advantages in light-absorption capability, tendency to aggregate, and packing behavior. In the organic solar cell blended with PM6, TBT achieves a higher power conversion efficiency (18.04%), which is one of the highest values obtained by star-shaped acceptors in binary organic solar cells.
Article
Materials Science, Multidisciplinary
Muhammad Amirul Islam, Andrew J. Myles, Young-Hye La, Mohtada Sadrzadeh, Jae-Young Cho, Feng Gao, Michael J. Serpe
Summary: This study developed a simplified synthesis method for star-shaped block copolymers using inorganic silica nanoparticles as the core. The results showed that star-shaped block copolymers with medium-length PEG arms exhibited excellent coating ability and stability on ultrafiltration membranes. The coated membranes demonstrated improved protein solution filtration and enhanced oleophobicity, which has potential applications in water purification, lubrication, and biomedical fields.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Applied
Dmitry O. Balakirev, Artur L. Mannanov, Nikita A. Emelianov, Polina K. Sukhorukova, Alexander K. Kalinichenko, Pavel A. Troshin, Dmitry Yu. Paraschuk, Sergey A. Ponomarenko, Yuriy N. Luponosov
Summary: The recent success in the development of non-fullerene acceptors (NFAs) for organic solar cells (OSCs) has led to a search for efficient and complementary donor materials. Understanding the structure-property correlations for new generations of acceptor and donor materials is crucial for advancing the field of OSCs. This study reports the synthesis and investigation of star-shaped small molecules based on benzotriindole (BTI) as potential donor materials for NF OSCs.
Article
Polymer Science
Nadiia Velychkivska, Ondrej Sedlacek, Anastasiia B. Shatan, Monika Spasovova, Sergey K. Filippov, Mandeep K. Chahal, Larisa Janisova, Jiri Brus, Lenka Hanykova, Jonathan P. Hill, Francoise M. Winnik, Jan Labuta
Summary: Star-shaped porphyrin-PNIPAM(4) (PP) conjugates with four PNIPAM arms connected to a central tetraphenylporphyrin unit were synthesized and their temperature-induced phase-separation behavior was investigated. Compared to PNIPAM homopolymers, the shorter PNIPAM arms of PP conjugates led to a lower phase-separation temperature. Additionally, the size of the cooperative domain of PP was found to be concentration-dependent.
Article
Mechanics
Hai-Tao Liu, Liang Wang
Summary: By incorporating various tip re-entrant angles into star-shaped honeycombs, multiple improved structures with tunable Poisson's ratio are proposed. In-plane elastic properties are derived using energy method in a 2D analytical model, and the theoretical results are validated through finite element simulation and compression experiments. The deformation mechanism of 3D improved star-shaped honeycombs is discussed through quasi-static compression experiments and numerical simulations.
COMPOSITE STRUCTURES
(2022)
Article
Chemistry, Multidisciplinary
Jun Xu, Jinsheng Zhang, Daobin Yang, Kuibao Yu, Dandan Li, Zihao Xia, Ziyi Ge
Summary: Star-shaped small molecules with three-dimensional charge-transport characteristics have been successfully designed and synthesized for use in organic solar cells. When blended with Y6, the four-armed star-shaped molecule BDT-4Th demonstrated higher conversion efficiency compared to the three-armed BDT-3Th, providing an effective strategy for achieving high efficiency in organic solar cells.
CHINESE CHEMICAL LETTERS
(2022)
Article
Polymer Science
So Yeong Park, Chungryong Choi, Junho Jang, Eunseol Kim, Yeseong Seo, Jaeyong Lee, Jin Kon Kim, Hyeon U. Jeong, Jaeup U. Kim
Summary: The research discovered that under different substrate interactions and molecular weights, thin-film morphology of six-arm star-shaped poly(methyl methacrylate)-b-polystyrene [(PMMA-b-PS)(6)] varies, forming different structural arrangements.
Article
Materials Science, Multidisciplinary
Haiyang Shu, Liang Chen, Xiaofu Wu, Tong Wang, Shuai Wang, Hui Tong, Lixiang Wang
Summary: A series of metal-free star-shaped organic luminogens based on carbazole and chalcogen atoms were reported, with CzS showing outstanding performance in its neat film, including persistent phosphorescence and white electroluminescence characteristics, potentially suitable for information encryption applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Computer Science, Artificial Intelligence
Wanhua Li, Jiwen Lu, Abudukelimu Wuerkaixi, Jianjiang Feng, Jie Zhou
Summary: This paper investigates facial kinship verification problem through hierarchical reasoning graph networks, proposing S-RGN and H-RGN for this purpose. S-RGN constructs a star-shaped graph for relational reasoning, while H-RGN introduces hierarchical graph structure and performs bottom-up comparative information abstraction and top-down comprehensive signal propagation. Experimental results show competitive performance of the proposed methods on kinship databases.
IEEE TRANSACTIONS ON IMAGE PROCESSING
(2021)
Article
Chemistry, Applied
Jihua Wang, Wenyue Dong, Qiyue Chen, Zhenjun Si, Xu Cui, Dajun Liu, Qian Duan
Summary: Novel four-arm star-shaped polymers with different molecular weights were successfully synthesized using a new polymerization technique, displaying excellent nonlinear optical (NLO) properties. A novel polymer synthesized through click reaction showed better NLO performance. Complexes prepared from the novel polymer exhibited significantly enhanced NLO properties, indicating a weaker aggregation effect in the matrix.
Article
Polymer Science
So Yeong Park, Hyeon U. Jeong, Jaeyong Lee, Junho Jang, Sanghoon Kim, Chungryong Choi, Jaeup U. Kim, Jin Kon Kim
Summary: The authors conducted directed self-assembly on thin films of symmetric six-arm star-shaped poly(methyl methacrylate)-block-polystyrene copolymer, adjusting the affinity between each block and the trench wall to fabricate various dual nanopatterns. The observed morphologies, including lines, lamellar layers, and nanotubes, depend on the surface properties of the trench and the treatment method.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Article
Biochemistry & Molecular Biology
Sayantan Mondal, Biman Bagchi
Summary: This article reviews recent research on the structure, dynamics, and role of water around biomolecules in biological functions. While previous studies focused on hydration layers, recent attention has shifted to molecular-level understanding. Understanding the role of water inside a biological cell is crucial in understanding biological activity.
CURRENT OPINION IN STRUCTURAL BIOLOGY
(2022)
Article
Polymer Science
Ken Terao, Abe Masahiro, Masafumi Nagase, Sayuri Takeshima, Shohei Ida, Shokyoku Kanaoka
Summary: Small-angle X-ray scattering and electrophoretic light scattering measurements were conducted on dilute aqueous solutions of star-branched poly(N-isopropylacrylamide) (sPNIPAM) at different temperatures. Regardless of the end groups, relatively narrow-dispersed sphere particles with an average aggregation number between 10 and 50 were observed in water at high temperatures (45-55°C) during constant heating process. The solutions with polymer mass concentration of 2-4 mg mL(-1) did not become turbid at temperatures higher than the phase separation temperature of the corresponding linear polymer. Negative zeta potential was found for all solutions at 45°C, indicating the stabilization of dispersion state by electrostatic repulsion force. Spinodal decomposition was identified as the dominant mechanism of microscopic phase separation, as narrower distributed spherical particles were observed in the solution upon rapid heating compared to constant heating procedure.
Article
Engineering, Biomedical
Mahdi Sakhavi, Reza Lotfi Mayan Sofla, Mostafa Rezaei, Mohammad Reza Miralvar
Summary: In this study, chemically-crosslinked multi-arm star-shaped polyurethanes (SPUs) were prepared using different arm numbers of polycaprolactone, hexamethylene diisocyanate, and 1, 4-butanediol. The results showed that the phase separation among hard and soft segments increased with the increment of arm numbers. The mechanical studies indicated that the crosslinking density and degree of crystallinity were the main factors controlling the mechanical properties.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Article
Polymer Science
Bradley R. Frieberg, Emmanouil Glynos, Malvina Stathouraki, Georgios Sakellariou, Peter F. Green
Article
Polymer Science
Apostolos E. A. S. Evangelopoulos, Anastassia N. Rissanou, Emmanouil Glynos, Ioannis A. Bitsanis, Spiros H. Anastasiadis, Vasileios Koutsos
Article
Polymer Science
Emmanouil Glynos, Paraskevi Petropoulou, Emmanouil Mygiakis, Alkmini D. Nega, Wenyang Pan, Lampros Papoutsakis, Emmanuel P. Giannelis, Georgios Sakellariou, Spiros H. Anastasiadis
Article
Chemistry, Multidisciplinary
Petra Bacova, Emmanouil Glynos, Spiros H. Anastasiadis, Vagelis Harmandaris
Article
Polymer Science
Sivasurender Chandran, Jorg Baschnagel, Daniele Cangialosi, Koji Fukao, Emmanouil Glynos, Liesbeth M. C. Janssen, Marcus Mueller, Murugapvan Muthukumar, Ullrich Steiner, Jun Xu, Simone Napolitano, Guenter Reiter
Article
Polymer Science
Panagiotis A. Klonos, Nikolaos Patelis, Emmanouil Glynos, Georgios Sakellariou, Apostolos Kyritsis
Review
Chemistry, Multidisciplinary
Emmanouil Glynos, Christos Pantazidis, Georgios Sakellariou
Article
Polymer Science
Christos Pantazidis, Stelios Andreou, Emmanouil Glynos, Georgios Sakellariou
EUROPEAN POLYMER JOURNAL
(2020)
Article
Polymer Science
Bradley R. Frieberg, Emmanouil Glynos, Georgios Sakellariou, Madhusudan Tyagi, Peter F. Green
Article
Chemistry, Multidisciplinary
Petra Bacova, Emmanouil Glynos, Spiros H. Anastasiadis, Vagelis Harmandaris
Summary: This study investigates the behavior of amphiphilic mikto-arm star copolymers in a selective polymer host through atomistic molecular dynamics simulations. The number of arms influences the self-assembly of the mikto-arm stars into cylindrical-like objects or a percolated network within the host matrix. The segmental dynamics of the stars is mainly controlled by their architecture and the heterogeneous local environment formed by intra- and intermolecular nanosegregation.
Article
Chemistry, Physical
George Zardalidis, Dimitrios Chatzogiannakis, Emmanouil Glynos, Filippos Farmakis
Summary: The contact between solid polymer electrolytes and electrodes in lithium-ion batteries is crucial for cell capacitance and life. In this study, low-molecular polyethylene glycol electrolytes with different chain termination groups showed varying electrochemical stability when in contact with metallic lithium. The electrolyte with hydroxy chain ends exhibited poor behavior and high decomposition, while the one with methoxy chain ends formed a stable electrolytic system.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Polymer Science
Emmanouil Mygiakis, Emmanouil Glynos, Georgios Sakellariou
Summary: A novel approach for synthesizing miktoarm copolymer stars with divinylbenzene cross-linked core via anionic polymerization is presented, leading to polymers with low dispersity values and improved structural homogeneity. The proposed synthetic route involves the synthesis of a triblock terpolymer PS-b-PDVB-b-PEO, followed by cross-linking of DVB block vinyl groups and formation of miktoarm copolymer stars. The use of potassium alkoxide co-initiator allows for controlled polymerization of both DVB and EO without end group modification, providing benefits such as molecular characteristics control and structural integrity confirmation.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Polymer Science
Dimitrios Skoulas, Gaetano Mangiapia, Daniele Parisi, Maria Kasimatis, Emmanouil Glynos, Efstratios Stratikos, Dimitris Vlassopoulos, Henrich Frielinghaus, Hermis Iatrou
Summary: The study successfully synthesized novel linear amphiphilic pentablock hybrid polypeptides that exhibit responsiveness to changes in pH and temperature while forming quickly self-healing hydrogels. By investigating the structure-property relationship through rheology and other methods, the potential applications of these biomaterials in drug delivery, 3D printing, and tissue engineering were highlighted.
Article
Chemistry, Physical
Petra Bacova, Emmanouil Glynos, Spiros H. Anastasiadis, Vagelis Harmandaris
Article
Chemistry, Physical
Petra Bacova, Romanos Foskinis, Emmanouil Glynos, Anastassia N. Rissanou, Spiros H. Anastasiadis, Vagelis Harmandaris
