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Molecular Boxes on a Molecular Printboard: Encapsulation of Anionic Dyes in Immobilized Dendrimers
Author(s) -
Onclin Steffen,
Huskens Jurriaan,
Ravoo Bart Jan,
Reinhoudt David N.
Publication year - 2005
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.200500078
Subject(s) - dendrimer , supramolecular chemistry , microcontact printing , molecule , materials science , click chemistry , polymer chemistry , chemical engineering , nanotechnology , chemistry , organic chemistry , engineering
Fifth‐generation poly(propylene imine) dendrimers, modified with 64 apolar adamantyl groups, have been immobilized on cyclodextrin host monolayers (“molecular printboards”) on glass by supramolecular microcontact printing. The immobilized dendrimers retain their guest‐binding properties and function as “molecular boxes” that can be filled with fluorescent dye molecules from solution. Alternatively, part of the immobilized dendrimers were filled with dye molecules by cross‐microcontact printing while the remaining, empty dendrimers were filled with a different dye from solution, resulting in alternating patterns of dye molecules. In addition, we demonstrate that encapsulation of dyes in immobilized dendrimers is reversible: immobilized molecular boxes can be filled with a dye, emptied, and subsequently refilled with a different dye.