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Optical Characteristics of Hybrid Macrocycles with Dithienogermole and Tricoordinate Boron Units
- Source :
- Chemistry – A European Journal. 27:3306-3314
- Publication Year :
- 2021
- Publisher :
- Wiley, 2021.
-
Abstract
- The introduction of unconventional elements into π-conjugated systems has been studied to manipulate the electronic states and properties of compounds. Herein, boron- and germanium-containing hybrid macrocycles, as a new class of element-hybrid conjugated systems, have been synthesized. The palladium-catalyzed Stille cross coupling of bis(bromothienyl)borane and bis(trimethylstannylthienyl)- or bis(trimethylstannylphenyl)-substituted dithienogermoles as the boron- and germanium-containing building blocks, respectively, produced a mixture of several macrocyclic compounds. Single-crystal X-ray analysis of the 2:2 coupling product revealed a planar structure with a cavity inside the macrocycle. The optical properties of the macrocyclic products indicated rather small electronic interactions between the building units. However, intramolecular photoenergy transfer from the dithienogermole unit to the boron unit was clearly observed with respect to the fluorescence spectra.
- Subjects :
- 010405 organic chemistry
Chemistry
Organic Chemistry
chemistry.chemical_element
General Chemistry
Conjugated system
Borane
010402 general chemistry
01 natural sciences
Fluorescence spectra
Catalysis
0104 chemical sciences
Stille reaction
Coupling (electronics)
Crystallography
chemistry.chemical_compound
Intramolecular force
Hybrid material
Boron
Subjects
Details
- ISSN :
- 15213765 and 09476539
- Volume :
- 27
- Database :
- OpenAIRE
- Journal :
- Chemistry – A European Journal
- Accession number :
- edsair.doi.dedup.....942655513f86447bae5132da996b9f47