A “Clickable” Hybrid Nanocluster of Cubic Symmetry
作者:Dirk Heyl、Eckhard Rikowski、Rudolf C. Hoffmann、Jörg J. Schneider、Wolf-Dieter Fessner
DOI:10.1002/chem.201000488
日期:2010.5.17
Platonic scaffold: Octa(azidopropyl) cube‐octameric silsesquioxane is a versatile scaffold for uniform eightfold symmetric decoration by efficient Huisgen‐type 1,3‐dipolar cycloaddition under both thermal and CuI‐catalyzed conditions (see scheme). Applications are demonstrated for the formation of glycoclusters, as well as an entry to dendrimer synthesis by functional azide‐to‐alkyne reversion with
Controlled Click-Assembly of Well-Defined Hetero-Bifunctional Cubic Silsesquioxanes and Their Application in Targeted Bioimaging
作者:M. Eugenia Pérez-Ojeda、Beatriz Trastoy、Álvaro Rol、María D. Chiara、Inmaculada García-Moreno、Jose Luis Chiara
DOI:10.1002/chem.201300339
日期:2013.5.17
for the controlled assembly of precisely defined hybrid nanomaterials and a fluorescent multivalent probe for application in targeted cell‐imaging. The inorganic cage provides an improved photostability to the covalently attached dye as well as a convenient framework for the 3D multivalent display of the pendant epitopes. Thus, fluorescent bioprobes based on well‐defined cubicsilsesquioxanes offer interesting
Novel azido-functionalized POSS were synthesized, which could serve as nanoprecursors for higher-order molecular construction of organic–inorganic hybrids via“click” chemistry.
Synthesis and characterization of organic/inorganic hybrid materials based on polyhedral oligomeric silsesquioxane (POSS) and poly(ethylene glycol) via click chemistry
anhydride. Then the mono and dialkyneterminated compounds were produced by the treatment with propargyl alcohol. Finally, click reaction occurred between azide end-functionalized polyhedraloligomericsilsesquioxane [POSS(N3)8] and alkyne-terminated compounds. The resultant products were characterized by H NMR, FT-IR, SEM, EDX, TGA and DTA.
铜(I)催化炔叠氮化物Huisgen 1,3-偶极环加成(CuAAC)用于创建POSS-PEG体系结构。在这里,我们介绍了用马来酸酐官能化的单和双PEG2000的制备。然后通过用炔丙醇处理产生单和二乙炔化的化合物。最后,叠氮化物末端官能化的多面体低聚倍半硅氧烷[POSS(N3)8]与炔烃封端的化合物之间发生点击反应。所得产物通过1 H NMR,FT-IR,SEM,EDX,TGA和DTA表征。
Inducing enantioselective crystallization with and self‐assembly of star‐shaped hybrid polymers prepared via “grafting to” strategy
(PPI-Alkynyl). The hybrid POSS-(PPI)8 was with predominated left-handed helical conformation and exhibited excellent ability in the enantioselectivecrystallization of racemic compounds. In the meantime, heteroarm star-shaped hybrid (PEG)4-POSS-(PPI)4 was prepared by the click reaction of POSS-(N3)8 with PPI-Alkynyl and alkynyl-modified poly (ethylene glycol) (PEG-Alkynyl). The hybrid (PEG)4-POSS-(PPI)4