High affinity threading of a new tetralactam macrocycle in water by fluorescent deep-red and near-infrared squaraine dyes

A new tetralactam macrocycle was prepared and found to encapsulate deep-red and near-infrared squaraine and croconaine dyes in water with tunable threading kinetics. The new supramolecular paradigm of guest back-folding was used to increase macrocycle/squaraine affinity by 370-fold and achieve an as...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2019-11, Vol.55 (85), p.12793-12796
Main Authors: Dempsey, Janel M, Zhai, Canjia, McGarraugh, Hannah H, Schreiber, Cynthia L, Stoffel, Shannon E, Johnson, Andrew, Smith, Bradley D
Format: Article
Language:English
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Summary:A new tetralactam macrocycle was prepared and found to encapsulate deep-red and near-infrared squaraine and croconaine dyes in water with tunable threading kinetics. The new supramolecular paradigm of guest back-folding was used to increase macrocycle/squaraine affinity by 370-fold and achieve an association constant of 2.8 × 10 9 M −1 . Guest back-folding increases squaraine affinity for a new tetralactam macrocycle 370-fold in water.
ISSN:1359-7345
1364-548X
DOI:10.1039/c9cc05244e