An electrochemical sensor for diphenylamine detection based on reduced graphene oxide/Fe3O4-molecularly imprinted polymer with 1,4-butanediyl-3,3′-bis-l-vinylimidazolium dihexafluorophosphate ionic liquid as crosslinker was written by Liu, Lingyu;Zhu, Xudong;Zeng, Yanbo;Wang, Hailong;Lu, Yixia;Zhang, Jian;Yin, Zhengzhi;Chen, Zhidong;Yang, Yiwen;Li, Lei. And the article was included in Polymers (Basel, Switzerland) in 2018.Category: imidazoles-derivatives This article mentions the following:
In this paper, we report a new composite of reduced graphene oxide/Fe3O4-ionic liquid based molecularly imprinted polymer (RGO/Fe3O4-IL-MIP) fabricated for diphenylamine (DPA) detection. RGO/Fe3O4-IL-MIP was preparedwith RGO/Fe3O4 as supporter, ionic liquid 1-vinyl-3-butylimidazolium hexafluorophosphate ([VC4mim][PF6]) as functional monomer, ionic liquid 1,4-butanediyl-3,3′-bis-l-vinylimidazolium dihexafluorophosphate ([V2C4 (mim)2][(PF6)2]) as crosslinker, and diphenylamine (DPA) as template mol. Fourier transform IR spectroscopy, thermal gravimetric anal., SEM, and vibrating sample magnetometer were employed to characterize the RGO/Fe3O4-IL-MIP composite. RGO/Fe3O4-IL-MIP was then drop-cast onto a glassy carbon electrode to construct an electrochem. sensor for DPA. The differential pulse voltammetry (DPV) peak current response for 20μM DPA of RGO/Fe3O4-IL-MIP modified glassy carbon electrode (GCE) was 3.24 and 1.68 times that of RGO/Fe3O4-IL-NIP and RGO/Fe3O4-EGDMA-MIP modified GCEs, resp., indicating the advantage of RGO/Fe3O4-ILMIP based on ionic liquid(IL) as a crosslinker. The RGO/Fe3O4-IL-MIP sensor demonstrated good recognition for DPA. Under the optimized conditions, the RGO/Fe3O4-IL-MIP sensor exhibited a DPA detection limit of 0.05μM (S/N = 3) with a linear range of 0.1-30μM. Moreover, the new RGO/Fe3O4-IL-MIP based sensor detected DPA in real samples with satisfactory results. In the experiment, the researchers used many compounds, for example, 1-Butyl-3-vinyl-1H-imidazol-3-ium hexafluorophosphate(V) (cas: 915358-85-9Category: imidazoles-derivatives).
1-Butyl-3-vinyl-1H-imidazol-3-ium hexafluorophosphate(V) (cas: 915358-85-9) belongs to imidazole derivatives. Imidazole is the basic core of some natural products such as histidine, purine, histamine and DNA based structures, etc. Among the different heterocyclic compounds, imidazole is better known due to its broad range of chemical and biological properties. This ring system is present in important biological building blocks, such as histidine and the related hormone histamine.Category: imidazoles-derivatives
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem