1. Efficient Synthesis of Fluorescent Squaraine Rotaxane Dendrimers
- Author
-
Shuzhang Xiao, Bradley D. Smith, Kaitlin Peckham, and Na Fu
- Subjects
chemistry.chemical_classification ,Dendrimers ,Rotaxane ,Molecular Structure ,Rotaxanes ,Organic Chemistry ,Convergent synthesis ,Alkyne ,Photochemistry ,Biochemistry ,Combinatorial chemistry ,Fluorescence ,Catalysis ,Article ,Cycloaddition ,chemistry.chemical_compound ,Phenols ,chemistry ,Dendrimer ,Chemical stability ,Azide ,Physical and Theoretical Chemistry ,Copper ,Cyclobutanes ,Fluorescent Dyes - Abstract
A squaraine rotaxane scaffold with four alkyne groups is readily converted into a range of dendritic architectures using high-yielding copper-catalyzed alkyne azide cycloaddition (CuAAC) chemistry. A convergent synthesis approach is more efficient than a divergent pathway. Dendritic squaraine rotaxanes with peripheral amine groups can be further functionalized to produce multivalent deep-red fluorescent derivatives that exhibit high brightness and outstanding chemical stability in biological solution. The surface groups on these functionalized fluorescent dendrimers include guanidinium, mannose, and phosphatidylcholine.
- Published
- 2009