Multiple phenyl ring appended Re-based complexes for strong visible light absorption and DNA binding. Issue 43 (20th October 2021)

• Record Type: Journal Article
• Authors: Singh, Bholey; Pani, Balaram; Gupta, Deepak
• Is Part Of: Dalton transactions. Volume 50:Issue 43(2021)
• Page Start: 15558
• Page End: 15566
• Publication Date: 2021-10-20
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d1dt02216d
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : A series of facial -Re(CO)3 -based acyclic complexes possessing N∩O bis-chelating ligands and triphenylphosphine-oxide donors displayed strong absorption in the visible region ( ε = 40 000 M −1 cm −1 ) and satisfactory DNA binding ability. Abstract : A series of facial -Re(CO)3 -based acyclic complexes (1–3 ) possessing N∩O bis-chelating ligands and a triphenylphosphine oxide donor was synthesized and characterized. The most interesting structural feature of these complexes is that both the coordinated ligands are functionalized with external phenyl rings. Single crystal X-ray diffraction analysis confirms that each molecule demonstrates a variety of intermolecular supramolecular interactions via the external phenyl rings. All the complexes displayed strong absorption ( ε = 14 000–40 000 M −1 cm −1 ) over wide visible region (400–600 nm). Due to the interesting structural and photophysical properties of the complexes, a satisfactory DNA binding ability was observed. The binding of the complexes with DNA grooves was confirmed by a significant increase in the absorption intensities of the complexes in the visible region, absorption enhancement of DNA and circular dichroism.