Development of a near infrared novel bioimaging agent via co-oligomerization of Congo red with aniline and o-phenylenediamine: experimental and theoretical studies. Issue 62 (13th November 2019)

• Record Type: Journal Article
• Authors: Singh, Neetika; Kumar, Prabhat; Kumar, Raj; Aazam, Elham S.; Riaz, Ufana
• Is Part Of: RSC advances. Volume 9:Issue 62(2019)
• Page Start: 36479
• Page End: 36491
• Publication Date: 2019-11-13
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c9ra05814a
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : To study the effect of insertion of a multifunctional dye moiety on the photophysical properties of conducting polymers, the present paper reports for the first time the homopolymerization and co-oligomerization of Congo red (CR) dye with aniline and o -phenylenediamine. Abstract : With a view to study the effect of insertion of a multifunctional dye moiety on the photo physical properties of conducting polymers, the present paper reports for the first time the homopolymerization and co-oligomerization of Congo red (CR) dye with aniline and o -phenylenediamine. The co-oligomerization was established by Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance spectroscopy ( 1 H-NMR), and ultraviolet-visible (UV-vis) spectroscopy while the morphology was examined using X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. The theoretical as well as experimental data of 1 H-NMR as well as IR studies confirmed the co-oligomer formation while ultraviolet-visible spectroscopy studies revealed a dynamic change in the optical properties upon variation of co-oligomer composition. X-ray diffraction studies established a crystalline morphology of oligomers. Live cell confocal imaging studies revealed that the co-oligomers could be effectively used in NIR imaging.