Selective and sensitive electrochemical detection of dopamine based on water-soluble porphyrin functionalized graphene nanocomposites

Fabrication of a Graphene@TiO2@Porphyrin Hybrid Material and Its Photocatalytic Properties under Simulated Sunlight Irradiation

“…The nature of the adsorption of the TCPP porphyrin onto the hybrid TiO 2 @GNPs surface was determined by using XPS spectroscopy. Figure A shows the deconvoluted C1 s spectrum of graphene@TiO 2 @ porphyrin, which could be divided into 4 peaks, the main peak at 284.3 eV corresponded to C=C bonds, and the peaks at 286.0 eV, 287.5 e, and 288.9 eV were attributed to C=N, C–N and O–C=O bonds, respectively . The Ti 2p core level of both TiO 2 and the graphene@TiO 2 @ porphyrin hybrid nanomaterial are shown as black and red lines respectively in Figure B.…”

Investigation of the adsorption mechanism and preconcentration of sulfonamides using a porphyrin-functionalized Fe 3 O 4 -graphene oxide nanocomposite

“…For example, Wu et al [20] used an anion porphyrin to stabilize chemically reduced graphene (TCPP/CCG) and then modified glassy carbon electrodes with the TCPP/CCG to sensitively and selectively detect dopamine with a low detection limit of 0.01 μM. In addition, Han et al [23] and Lv et al [24] also prepared porphyrin-functionalized graphene-based materials for the electrochemical detection of dopamine. Wu et al [25] and Zhang et al [26] used porphyrin-functionalized graphene coupled with an electrochemiluminescence technique and an electrochemical aptasensor for the ultrasensitive label-free detection of human telomerase activity and ATP, respectively.…”

Reduced Graphene Oxide Non‐covalent Functionalized with Zinc Tetra Phenyl Porphyrin Nanocomposite for Electrochemical Detection of Dopamine in Human Serum and Rat Brain Samples

“…The porphyrin molecules are a class of macrocyclic compounds and it is play an important role in biological organisms [26,27]. Porphyrin have rich redox properties and hence they have widespread applications in electrocatalysis [28][29][30][31][32]. The coordination sites of porphyrin molecule can easily connected with metal ions to form stable metal-tetraphenylporphyrins (M-TPP) [33].…”

“…The combination of RGO with Zn-TPP via non-covalent interaction might significantly increase the electrocatalytic activity. Moreover, the Zn-TPP is a good candidate for sensor applications due to the presence of Zn metal and suitable substituents [44,32].…”