Borylated perylenediimide: self-assembly, photophysics and sensing application12. Issue 21 (25th January 2019)

• Record Type: Journal Article
• Authors: Sudhakar, Pagidi; Neena, Kalluvettukuzhy K.; Thilagar, Pakkirisamy
• Is Part Of: Dalton transactions. Volume 48:Issue 21(2019)
• Page Start: 7218
• Page End: 7226
• Publication Date: 2019-01-25
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c8dt04005b
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : A red emissive perylenediimide-triarylboron conjugate (PDI-TAB) with interesting 1D self-assembled nanowires, concentration dependent emission colors and potential fluoride ion sensing is reported. Abstract : Triarylboryl appended perylenediimide (PDI-TAB) is designed and synthesized. The incorporation of triarylboranes (TABs) decreases self-aggregation and increases the solubility of PDI-TAB in common organic solvents. Fluorescence emission colors ranging from red, yellow and green are realized by judiciously modulating the concentration of PDI-TAB in solution. The morphology and dimensions of the self-assemblies formed by PDI-TAB can be controlled by changing the experimental conditions. For example, PDI-TAB forms fibers of finite length when bulk powder is dispersed in methanol; it shows flexible lengthy 1D fibers when dichloromethane solution of PDI-TAB is injected into methanol solvent. PXRD analysis indicates that the molecular organization remains the same in both cases. PDI-TAB functions as a selective fluorogenic sensor for toxic fluoride anions; the sensing mechanism is explained by using theoretical calculations.