In:
Angewandte Chemie, Wiley, Vol. 135, No. 14 ( 2023-03-27)
Abstract:
Post‐synthetic modification (PSM) is an effective approach for the tailored functionalization of metal‐organic architectures, but its generalizability remains challenging. Herein we report a general covalent PSM strategy to functionalize Pd n L 2 n metal‐organic cages (MOCs, n =2, 12) through an efficient Diels–Alder cycloaddition between peripheral anthracene substituents and various functional motifs bearing a maleimide group. As expected, the solubility of functionalized Pd 12 L 24 in common solvents can be greatly improved. Interestingly, concentration‐dependent circular dichroism and aggregation‐induced emission are achieved with chiral binaphthol (BINOL)‐ and tetraphenylethylene‐modified Pd 12 L 24 , respectively. Furthermore, Pd 12 L 24 can be introduced with two different functional groups (e.g., chiral BINOL and achiral pyrene) through a step‐by‐step PSM route to obtain chirality‐induced circularly polarized luminescence. Moreover, similar results are readily observed with a smaller Pd 2 L 4 system.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v135.14
DOI:
10.1002/ange.202216977
Language:
English
Publisher:
Wiley
Publication Date:
2023
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