Synthesis and characterization of Polyindole and its catalytic performance study as a heterogeneous catalyst

Journal of Chemical Sciences

Kalpana Handore¹  Amit Horne¹  Prakash Chhattise1¹  Kakasaheb Mohite⁴  Atul Chaskar²  Vasant Chabukswar1¹  Sabrina Dallavalle³ 

[1] Department of Chemistry, Nowrosjee Wadia College, University of Pune, 19, Joag Path, Pune 411 001, India$$;National Centre for Nanosciences and Nanotechnology, Mumbai University, Mumbai, India$$;Department of Food, Environmental and Nutritional Sciences, Università degli Studi di Milano, Milan, Italy$$;Department of Chemistry, Haribhai V Desai College, Pune 411 002, India$$

关键词: Polymerization;    polyindole;    arylmethylene bis-1H-Indole;    heterogeneous catalyst;    recyclability;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

The catalytic performance study of polyindole as a heterogeneous catalyst is reported for the synthesis of 3,3'-arylmethylene-bis-1H-Indole derivatives using various substituted aldehydes and indole under reflux reaction condition with good to excellent yield. Polyindole was synthesized by chemical oxidative polymerization using citric acid as a dopant. The synthesized polymer was well characterized by various spectroscopic techniques like FT-IR, XRD, FESEM, etc. The XRD pattern confirms the partially crystalline nature of polyindole. The FESEM images of polyindole revealed the formation of irregularly shaped particulate nature with size in the range of 0.2 to 6 micron. In FT-IR spectrum, the major peak at 3400 cm-1 indicates N-H stretching and at 1564−1624 cm-1 indicates C-C stretching of benzenoid ring of indole. The presence of peak at 3400 cm-1 indicates that the polymerization does not occur at nitrogen. The present protocol has certain advantages like recyclability, low loading of the catalyst, low-cost and efficient use of polyindole as a heterogeneous catalyst.

【 授权许可】

Unknown