Singh Neetika, Kumar Prabhat, Kumar Raj, Aazam Elham S, Riaz Ufana
Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia New Delhi 110025 India
Advanced Instrumentation Research Facility, Jawaharlal Nehru University NewDelhi 110067 India.
RSC Adv. 2019 Nov 13;9(62):36479-36491. doi: 10.1039/c9ra05814a. eCollection 2019 Nov 4.
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 -phenylenediamine. The co-oligomerization was established by Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance spectroscopy (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 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.
为了研究插入多功能染料部分对导电聚合物光物理性质的影响，本文首次报道了刚果红（CR）染料与苯胺和对苯二胺的均聚和共低聚反应。通过傅里叶变换红外光谱（FTIR）、核磁共振光谱（H-NMR）和紫外可见（UV-vis）光谱确定了共低聚反应，同时使用X射线衍射（XRD）和扫描电子显微镜（SEM）技术检查了形态。H-NMR以及红外研究的理论和实验数据证实了共低聚物的形成，而紫外可见光谱研究表明，随着共低聚物组成的变化，光学性质发生了动态变化。X射线衍射研究确定了低聚物的晶体形态。活细胞共聚焦成像研究表明，共低聚物可有效地用于近红外成像。
