Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 62, Issue 11, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202216871
Keywords
Boron Fluorophores; Boron-beta-Thioketonate; Charge Transport; Optoelectronics; Tetra-Coordinated Boron
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The development of new n-type semiconductors with tunable band gap and dielectric constant is important for high-performance optoelectronic devices. Boron-beta-thioketonates (MTDKB), which are analogues to boron-beta-diketonates containing a sulfur atom, were synthesized. The MTDKBs exhibited outstanding bulk electron mobility and single junction photo responsivity. They also showed luminescent properties and were investigated as fluorescent sensors with amine functionality.
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-beta-thioketonates (MTDKB), analogues to boron-beta-diketonates containing a sulfur atom in the framework of beta-diketones were synthesized. Bulk transport measurement exhibited an outstanding bulk electron mobility of asymptotic to 0.003 cm(2) 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/nearinfrared region. The remarkable red shift of 89 nm (fluorescence) observed for 4 a in comparison with analogues boron-beta-diketonate signifies the importance of sulfur in these molecules. MTDKBs with amine functionality have also been investigated as an ON/OFF fluorescent sensor.
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