Synthesis and characterization of Rosebengal end-capped poly(o-chloroaniline)/Ag nanocomposite-based NIR fluorescent probe: a structure–property relationship study
Anbarasan Ramasamy, M Kenet Nancy Mary, A Jancirani
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引用次数: 0
Abstract
Nowadays, an economically cheaper, NIR fluorescent probe is needed in order to identify the cancerous cells without skin cells damage. For this purpose, conventional conducting polymers are used. Under N2 environment, the chemical polymerization of o-chloroaniline (OCA) was initiated by peroxydisulphate (PDS) with the help of rosebengal (RB) dye, both in the presence and absence of a 3% weight loading of Ag+ ion. The weight of the polymer was used to calculate the rate of polymerization (Rp) and yield percentage. Additionally, FTIR, UV–visible, fluorescence emission, thermogravimetric analysis, scanning electron microscopy and differential scanning calorimetry were used to analyse the poly(o-chloroaniline) (POCA) structure–property relationship. The FTIR spectrum confirmed the presence of benzenoid and quinonoid structures in POCA chains. The percentage yield and Rp both marginally increased in the presence of Ag+ ions. The Tg of RB end-capped POCA/Ag nanocomposite system was determined as 103°C. The energy of activation (Ea) value of 66.17 kJ mol−1 was found for the structural degradation of RB in RB end-capped POCA. In comparison to the straightforward RB end-capped POCA system, the POCA/Ago nanocomposite system has higher thermodynamic parameter values. The experimental findings are thoroughly examined and contrasted with the values given in the literature.
期刊介绍:
The Bulletin of Materials Science is a bi-monthly journal being published by the Indian Academy of Sciences in collaboration with the Materials Research Society of India and the Indian National Science Academy. The journal publishes original research articles, review articles and rapid communications in all areas of materials science. The journal also publishes from time to time important Conference Symposia/ Proceedings which are of interest to materials scientists. It has an International Advisory Editorial Board and an Editorial Committee. The Bulletin accords high importance to the quality of articles published and to keep at a minimum the processing time of papers submitted for publication.