Synthesis of π-extended B ← N coordinated phenanthroimidazole dimers and their linear and nonlinear optical properties. Issue 23 (2nd June 2020)

• Record Type: Journal Article
• Authors: Vanga, Mukundam; Sa, Shreenibasa; Kumari, Anupa; Murali, Anna Chandrasekar; Nayak, Prakash; Das, Ritwick; Venkatasubbaiah, Krishnan
• Is Part Of: Dalton transactions. Volume 49:Issue 23(2020)
• Page Start: 7737
• Page End: 7746
• Publication Date: 2020-06-02
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d0dt01024c
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : B ← N coordinated phenanthroimidazole dimers exhibit excellent fluorescence quantum yields in solution and conjugation length dependant two-photon-absorption properties. Abstract : Intramolecular B ← N coordinated fluorophores have shown potential applications in optoelectronics and as sensors due to their unique photophysical properties. In this work, we report the synthesis and characterization of π-conjugated boron doped phenanthroimidazole dimers. All the π-conjugated B ← N coordinated phenanthroimidazole dimers exhibited high quantum yields in solution (up to 99%) and moderate quantum yields in the solid state (up to 51%). We investigated the nonlinear optical properties of phenanthroimidazole dimers and found that the measurement of two-photon-absorption cross-section is correlated with the conjugation length.