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Tuning the electrochemical potential of perfunctionalized dodecaborate clusters through vertex differentiation
Alex I Wixtrom1, Zeeshan A Parvez, Miles D Savage
1Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095, USA. spokoyny@chem.ucla.edu.
Chemical Communications (Cambridge, England)
|May 23, 2018
Summary
Researchers developed novel redox-active dodecaborate clusters with pentafluoroaryl groups. These clusters show enhanced redox potentials and allow for post-functionalization, expanding their potential applications in materials science.
Area of Science:
- Inorganic Chemistry
- Materials Science
- Supramolecular Chemistry
Background:
- Dodeca-hedral boranes are versatile platforms for developing novel functional materials.
- Vertex-differentiated dodecaborates offer tunable electronic and photophysical properties.
- Redox-active clusters are crucial for applications in electronics and catalysis.
Purpose of the Study:
- To synthesize and characterize a new class of redox-active vertex-differentiated dodecaborate clusters.
- To investigate the photophysical properties and redox potentials of these novel clusters.
- To explore the post-functionalization capabilities of the pentafluoroaryl groups.
Main Methods:
- Synthesis of [B12(O-CH2C6F5)11NO2] clusters.
- Characterization using spectroscopic techniques (NMR, Mass Spectrometry, UV-Vis).
- Electrochemical analysis to determine redox potentials.
- Nucleophilic aromatic substitution (SNAr) reactions for post-functionalization.
Main Results:
- Successful synthesis of [B12(O-CH2C6F5)11NO2] clusters.
- Demonstration of unique photophysical properties similar to [B12(OR)12] analogues.
- Observation of significantly higher redox potentials (+0.5 V) compared to analogues.
- Isolation of clusters in three oxidation states: dianion, radical, and neutral.
- Successful post-functionalization with thiol species via SNAr.
Conclusions:
- A new class of redox-active vertex-differentiated dodecaborate clusters has been developed.
- These clusters exhibit tunable redox properties and versatile reactivity.
- The pentafluoroaryl groups enable facile post-functionalization, broadening potential applications.
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