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Colloidal Molecules from Valence‐Endowed Nanoparticles by Covalent Chemistry
Author(s) -
Rouet PierreEtienne,
Chomette Cyril,
Duguet Etienne,
Ravaine Serge
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201809895
Subject(s) - covalent bond , colloid , nanoparticle , molecule , nanotechnology , valence (chemistry) , polymer , colloidal particle , chemistry , materials science , non covalent interactions , chemical engineering , organic chemistry , engineering , hydrogen bond
We demonstrate a simple method to create a variety of silica‐based colloidal molecules through the covalent assembly of site‐specifically functionalized patchy nanoparticles with complementary nanospheres. Colloidal analogues of BeBr 2 , BBr 3 and CBr 4 are obtained from sp‐, sp 2 ‐ and sp 3 ‐like particles, while Br 2 O and NBr 3 analogues can be fabricated by varying the relative amounts of both colloidal precursors. We also show that it is possible to attach covalently silica nanospheres of various sizes to one central patchy nanoparticle, which leads to the formation of more complex colloidal molecules, including chiral ones. The possibility to easily extend the strategy to other colloidal precursors which can serve as satellites, for example, ellipsoidal polymer particles or metallic nanoparticles, opens the way to a rich variety of new colloidal analogues of atoms which could serve as building blocks of next generation materials.