SYNTHESIS AND CHARACTERIZATION OF HYBRID COMPOUNDS \(R_2SnI_4\), R = \(PMA^+\) \((C_7H_7NH_3)\) AND \(PEA^+\) \((C_8H_9NH_3)\)
Nelly Safitri Anwari, Djulia Onggo and Muhamad A. Martoprawiro

Inorganic and Physical Chemistry Division, Faculty of Mathematics and Natural Sciences, Institute of Technology Bandung-ITB, Jl. Ganesha 10 Bandung, Indonesia

Abstract

Hybrid compounds \(R_2SnI_4\) are composed of cationic organic compound ammonium \(R^+\) embedded in anion layer of \(SnI_4^{2-}\) complex. This compound has superior photoluminescence properties so that can be used as an active ingredient in solar cells, photodetectors, and LED. In this study we prepared the hybrid compound using one-pot reaction by mixing all reactants SnO, HI, \(H_3PO_2\), and amines (PMA, PEA) and heated at 90-100 \(^0C\). The hybrid products were isolated as black and deep red crystals with the respective chemical formulas are \((PMA)_2SnI_4.HI\) and \((PEA)_2SnI_4.2HI\) with \(PMA^+\) = \(C_7H_7NH_3\) and \(PEA^+\) = \(C_8H_9NH_3\). The molecular formulas have been determined using the elemental analyser, atomic absorption spectroscopy and argentometric titrations. The thermal stability of \((PEA)_2SnI_4.2HI\) is 178 \(^0C\) and higher than \((PMA)_2SnI_4.HI\) that start to decompose at 129 \(^0C\).

Keywords: Hybrid, \((PMA)_2SnI_4.HI\), \((PEA)_2SnI_4.2HI\), photoluminescence

Topic: CHEMISTRY AND MATERIAL SCIENCES