title: CdSe Nanoplatelets: Living Polymers.
abstract: Colloidal CdSe nanoplatelets are considered to be excellent candidates for many applications in nanotechnology. One of the current challenges is to self-assemble these colloidal quantum wells into large ordered structures to control their collective optical properties. We describe a simple and robust procedure to achieve controlled face-to-face self-assembly of CdSe nanoplatelets into micron-long polymer-like threads made of up to ∼1000 particles. These structures are formed by addition of oleic acid to a stable colloidal dispersion of platelets, followed by slow drying and re-dispersion. We could control the average length of the CdSe nanoplatelet threads by varying the amount of added oleic acid. These 1-dimensional structures are flexible and feature a "living polymer" character because threads of a given length can be further grown through the addition of supplementary nanoplatelets at their reactive ends.
authors.affiliation: Laboratoire de Physique des Solides, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91405, Orsay Cedex, France.
authors.forename: Santanu
authors.identifier: 0000-0002-4136-1852
authors.initials: S
authors.lastname: Jana
authors.affiliation: Laboratoire de Physique des Solides, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91405, Orsay Cedex, France.
authors.forename: Patrick
authors.identifier: 0000-0002-1363-6062
authors.initials: P
authors.lastname: Davidson
authors.affiliation: Laboratoire de Physique des Solides, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91405, Orsay Cedex, France. Benjamin.abecassis@u-psud.fr.
authors.forename: Benjamin
authors.identifier: 0000-0002-1629-9671
authors.initials: B
authors.lastname: Abécassis
keywords: living polymers; nanoplatelets; nanostructures; quantum dots; self-assembly