TY  - JOUR
A1  - Li, Ru-Jin
A1  - Han, Muxin
A1  - Tessarolo, Jacopo
A1  - Holstein, Julian J.
A1  - Lübben, Jens
A1  - Dittrich, Birger
A1  - Volkmann, Christian
A1  - Finze, Maik
A1  - Jenne, Carsten
A1  - Clever, Guido H.
T1  - Successive Photoswitching and Derivatization Effects in Photochromic Dithienylethene-Based Coordination Cages
T2  - ChemPhotoChem
N2  - A new series of [Pd2(L)4] cages based on photochromic dithienylethene (DTE) ligands allowed us to gain insight into the successive photoswitching of multiple DTE moieties in a confined metallo-supramolecular assembly. Three new X-ray structures of [Pd2(o-L4)4], [Pd2(o-L1)2(c-L1)2] and [Pd2(c-L1)4] (o-L and c-L = open and closed forms of DTE ligands, respectively) were obtained. The structures deliver snapshots of three different combinations of DTE photoisomeric states within the cage, facilitating a comparison of the all-open with the all-closed, and most notably, an intermediate form where open and closed switches co-exist in the same cage. Moreover, a series of spherical anionic borate clusters was introduced in order to study their roles in the light-controllable host–guest chemistry. The binding guests show higher affinities with the flexible open cage [Pd2(o-L1)4] than with the rigid closed cage [Pd2(c-L1)4]. For the [B12F12]2− guest, thermodynamic data obtained from NMR experiments was compared to results from isothermal titration calorimetry (ITC).
KW  - coordination cages
KW  - dithienylethene
KW  - host-guest systems
KW  - photoswitches
KW  - supramolecular chemistry
Y1  - 2019
UR  - https://opus.bibliothek.uni-wuerzburg.de/frontdoor/index/index/docId/23681
UR  - https://nbn-resolving.org/urn:nbn:de:bvb:20-opus-236815
VL  - 3
ER  -