Limits to the heterogenization of a copper-bispidine aziridination catalyst on NU-1000. - Kieble, Thomas; Schneider, Nadjana; Saxl, Tobias; Kirschhöfer, Frank; Weidler, Peter G.; Heißler, Stefan; Josephy, Thomas; Bleher, Katharina (Journal of Inclusion Phenomena & Macrocyclic Chemistry, 2026)