title: Indistinguishability and distinguishability between amide and ester moieties in the construction and properties of M6L8 octahedral nanocages.
abstract: A series of 25 × 25 × 25 Å(3) octahedral coordination cages [Pd6(L)8](NO3)12 (L = L(1), 1; L = L(2), 2; L(1) = tris(6-quinolyl)trimesic ester; L(2) = N,N',N''-tris(6-quinolyl)-1,3,5-benzenetricarboxamide) is reported. L(1) and L(2) are indistinguishable for construction of octahedral nanocages, and thus the desirable mixed ligand nanocage comprising a statistical ligand distribution ([Pd6(L(1))n(L(2))8-n](NO3)12, 3) can be efficiently constructed. However, the nanocages are distinguishable for functions such as photoluminescence (PL) and catalysis. The PL intensity is in the order 1≫3 > 2, wherein 1 shows a blue emission. The nanocages show excellent catalytic activity for the C-C coupling reaction under mild conditions in the order 1 > 3 > 2, presumably owing to the spacer-functional groups.
authors.affiliation: Department of Chemistry, Pusan National University, Pusan 609-735, Republic of Korea. oksjung@pusan.ac.kr.
authors.forename: Tae Hwan
authors.initials: TH
authors.lastname: Noh
authors.forename: Woosik
authors.initials: W
authors.lastname: Hong
authors.forename: Haeri
authors.initials: H
authors.lastname: Lee
authors.forename: Ok-Sang
authors.initials: OS
authors.lastname: Jung