Successive Photoswitching and Derivatization Effects in Photochromic Dithienylethene-Based Coordination Cages
Please always quote using this URN: urn:nbn:de:bvb:20-opus-236815
- 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 theA 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).…
Author: | Ru-Jin Li, Muxin Han, Jacopo Tessarolo, Julian J. Holstein, Jens Lübben, Birger Dittrich, Christian Volkmann, Maik Finze, Carsten Jenne, Guido H. Clever |
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URN: | urn:nbn:de:bvb:20-opus-236815 |
Document Type: | Journal article |
Faculties: | Fakultät für Chemie und Pharmazie / Institut für Anorganische Chemie |
Language: | English |
Parent Title (English): | ChemPhotoChem |
Year of Completion: | 2019 |
Volume: | 3 |
Pagenumber: | 378-383 |
Source: | ChemPhotoChem (2019) 3:378-383. https://doi.org/10.1002/cptc.201900038 |
DOI: | https://doi.org/10.1002/cptc.201900038 |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 54 Chemie / 546 Anorganische Chemie |
Tag: | coordination cages; dithienylethene; host-guest systems; photoswitches; supramolecular chemistry |
Release Date: | 2024/08/28 |
EU-Project number / Contract (GA) number: | 683083 |
OpenAIRE: | OpenAIRE |
Licence (German): | ![]() |