Abstract

Triazole, similarly to imidazole, makes a prominent contribution to the proton conductivity of porous materials. To investigate the effects of triazole-based ligands in polyoxovanadates (POVs) on proton conduction, we designed and synthesized two decavanadate-based POVs, [Zn3(C2H4N4)6(H2O)6](V10O28)·14H2O (1) and [Zn3(C2H3N3)8(H2O)4](V10O28)·8H2O (2) constructed from the ligands 3-amino-1,2,4-triazole and 1H-1,2,4-triazole, respectively, via an aqueous solution evaporation method. Surprisingly, complex 1 obtained a superior proton conductivity of 1.24 × 10−2 S cm−1 under 60 °C and 98% RH, which is much higher than that of complex 2. Furthermore, due to the contribution of the conjugate properties of the ligands to the third-order nonlinear optical (NLO) properties, we also studied its two-photon responses and achieved satisfactory results.

Highlights

  • A fuel cell (FC) is a power plant that converts the chemical energy present in fuels and oxidizers directly into electrical energy to provide alternative clean energy.[1]

  • Due to the contribution of the conjugate properties of the ligands to the third-order nonlinear optical (NLO) properties, we studied its twophoton responses and achieved satisfactory results

  • Electro-optical combination in POM-based functional materials with potential applications has received more attention.9c As a greatly important part of the optical properties, third-order nonlinear optical (NLO) properties were investigated for the reported POM-based inorganic–organic hybrid complexes,[10] from which it was undisputed that the conjugated units from organic ligands had a decisive contribution to the third-order NLO responses

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Summary

Introduction

Performance of these materials has already been exploited to overcome the limitations of polymer membranes.[5]. Electro-optical combination in POM-based functional materials with potential applications has received more attention.9c As a greatly important part of the optical properties, third-order nonlinear optical (NLO) properties were investigated for the reported POM-based inorganic–organic hybrid complexes,[10] from which it was undisputed that the conjugated units from organic ligands had a decisive contribution to the third-order NLO responses. In this context, we designed and synthesized two decavanadate-based POVs on account of the contribution of triazole-based ligands to proton conductivity.

Results and discussion
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