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2 results on '"bola-amphiphiles"'

1. Bola‐Amphiphilic Glycodendrimers: New Carbohydrate Mimicking Scaffolds to Target Carbohydrate‐Binding Proteins

Author

Wenzheng Zhang, Dinesh Dhumal, Xiaolei Zhu, Brigino Ralahy, Aleksandra Ellert‐Miklaszewska, Jing Wu, Erik Laurini, Yi‐Wen Yao, Chai‐Lin Kao, Juan L. Iovanna, Sabrina Pricl, Bozena Kaminska, Yi Xia, Ling Peng, Chongqing University [Chongqing], Centre Interdisciplinaire de Nanoscience de Marseille (CINaM), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Nencki Institute of Experimental Biology, Polska Akademia Nauk = Polish Academy of Sciences (PAN), Università degli studi di Trieste = University of Trieste, Kaohsiung Medical University [Kaohsiung, Taïwan] (KMU), Centre de Recherche en Cancérologie de Marseille (CRCM), Aix Marseille Université (AMU)-Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), University of Lódź, PENG, Ling, Zhang, Wenzheng, Dhumal, Dinesh, Zhu, Xiaolei, Ralahy, Brigino, Ellert-Miklaszewska, Aleksandra, Wu, Jing, Laurini, Erik, Yao, Yi-Wen, Kao, Chai-Lin, Iovanna, Juan L, Pricl, Sabrina, Kaminska, Bozena, Xia, Yi, and Peng, Ling

Subjects
Dendrimers, Bola-amphiphiles, glucose-dendrimer, glycodendrimers, mannose-dendrimer, targeted delivery, glycodendrimer, [CHIM.ORGA]Chemical Sciences/Organic chemistry, [CHIM.THER] Chemical Sciences/Medicinal Chemistry, Organic Chemistry, Bola-amphiphile, Carbohydrates, General Chemistry, [CHIM.THER]Chemical Sciences/Medicinal Chemistry, [CHIM.ORGA] Chemical Sciences/Organic chemistry, Catalysis, Glucose, Lectins, Reactive Oxygen Species, Mannose
Abstract

International audience; Dendrimers are appealing scaffolds for creating carbohydrate mimics with unique multivalent cooperativity. We report here novel bola-amphiphilic glycodendrimers bearing mannose and glucose terminals, and a hydrophobic thioacetal core responsive to reactive oxygen species. The peculiar bola- amphiphilic feature enabled stronger binding to lectin compared to the conventional amphiphile. In addition, these dendrimers are able to target mannose receptors and glucose transporters expressed at the surface of cells, allowing effective and specific cellular uptake. This highlights their great promise for targeted delivery.

Published
2022
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2. A First Wide‐Open LDH Structure Hosting InP/ZnS QDs: A New Route Toward Efficient and Photostable Red‐Emitting Phosphor

Author

François Réveret, Horst Hintze-Bruening, Fabrice Leroux, Philippe Boutinaud, Rodolphe Valleix, Yongjun Feng, Geneviève Chadeyron, Qian Zhang, Damien Boyer, Hanako Okuno, Institut de Chimie de Clermont-Ferrand (ICCF), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA)-Institut national polytechnique Clermont Auvergne (INP Clermont Auvergne), Université Clermont Auvergne (UCA)-Université Clermont Auvergne (UCA), State Key Laboratory of Chemical Resource Engineering, Beijing Engineering Center for Hierarchical Catalysts, University of Chemical Technology, Départemement de Biologie Structurale et Cellulaire Intégrée (DBSCI), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA), Institut Pascal (IP), Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA)-Institut national polytechnique Clermont Auvergne (INP Clermont Auvergne), University of Paderborn, and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)

Subjects
Materials science, Photoluminescence, Intercalation (chemistry), Quantum yield, Phosphor, 02 engineering and technology, engineering.material, 010402 general chemistry, 7. Clean energy, 01 natural sciences, Indium phosphide, chemistry.chemical_compound, Silicone, General Materials Science, Red-emitting phosphor, Small-angle X-ray scattering, business.industry, Quantum dots, Mechanical Engineering, Layered double hydroxides, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Silicone composite film, chemistry, Mechanics of Materials, Quantum dot, Layered double hydroxide, engineering, Optoelectronics, Bola-amphiphiles, 0210 nano-technology, business
Abstract

International audience; The architecture of Zn-Al layered double hydroxides (LDHs), organo-modified with bola-amphiphiles molecules, is matching its interlayer space to the size of narrow-band red-emitting InP/ZnS core–shell quantum dots (QDs) to form original high-performance functional organic–inorganic QD-bola-LDH hybrids. The success of size-matching interlayer space (SMIS) approach is confirmed by X-ray diffraction, small angle X-ray scattering (SAXS), TEM, STEM-HAADF, and photoluminescence investigations. The QD-Bola-LDH hybrid exhibits a photoluminescence quantum yield three times higher than that of pristine InP/ZnS QDs and provides an easy dispersion into silicone-based resins, what makes the SMIS approach a change of paradigm compared to intercalation chemistry using common host structures. Moreover, this novel hybrid presents low QD–QD energy transfer comparable to that obtained for QDs in suspension. Composite silicone films incorporating InP/ZnS (0.27 wt%) QD-bola-LDH hybrids further show remarkable improved photostability relative to pristine QDs. An LED overlay consisting of a blue LED chip and silicone films loaded with QD-bola-LDH hybrids and YAG:Ce phosphors exhibits a color rendering index close to 94.

Published
2021
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