Tetra-coordinated boron compounds offer a plethora of luminescent materials. Different chelation around the boron center (O,O-, N,C-, N,O-, & N,N-) have been explored to tune the electronic and photophysical properties...
B ← N coordinated phenanthroimidazole dimers exhibit excellent fluorescence quantum yields in solution and conjugation length dependant two-photon-absorption properties.
Development of new n‐type semiconductors with tunable band gap and dielectric constant has significant implication in dissociating bound charge carrier relevant for demonstrating high performance optoelectronic devices. Boron‐β‐thioketonates (MTDKB), analogues to boron‐β‐diketonates containing a sulfur atom in the framework of β‐diketones were synthesized. Bulk transport measurement exhibited an outstanding bulk electron mobility of ≈0.003 cm2 V−1 s−1, which is among the best values reported till date in these class of semiconducting materials and correspondingly a single junction photo responsivity of upto 6 mA W−1 was obtained. This new family of O,S‐chelated boron compounds exhibited luminescence in the far red/near‐infrared region. The remarkable red shift of 89 nm (fluorescence) observed for 4 a in comparison with analogues boron‐β‐diketonate signifies the importance of sulfur in these molecules. MTDKBs with amine functionality have also been investigated as an ON/OFF fluorescent sensor.
A unique B–N coordinated phenanthroimidazole-based
zinc
salen was synthesized. The zinc salen thus synthesized acts as a photocatalyst
for the cycloaddition of carbon dioxide with terminal epoxides under
ambient conditions. DFT study of the cycloaddition of carbon dioxide
with terminal epoxide indicates the preference of the reaction pathway
when photocatalyzed by zinc salen. We anticipate that this strategy
will help to design new photocatalysts for CO2 fixation.
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