Electrochemical, microscopic and spectroscopic characterization of benzene diamine functionalized single walled carbon nanotube-cobalt (II) tetracarboxy-phthalocyanine conjugates

High-performance electrochemical amperometric sensors for the sensitive determination of phenyl urea herbicides diuron and fenuron

“…The practical applicability of the GO-MWCNTs/GCE was evaluated by determining the amount of DU and FU present in spiked water samples collected from well, lake, and Benzene diamine functionalized single walled carbon nanotube-cobalt (II) tetracarboxy-phthalocyanine conjugates 1 × 10 −5 -2 × 10 −4 0.42 μA μM −1 cm −2 [42] Monocarboxy-phthalocyanine-single walled carbon nanotube conjugates 1 × 10 −5 -2 × 10 −4 3.7 μA μM −1 cm −2 [16] Iron(II)tetraaminophthalocyanine-single walled carbon nanotube dendrimer 5 × 10 −5 -1 × 10 −4 0.6641 μA μM −1 [14] Graphene oxide-multiwalled carbon nanotubes 9 × 10 −6 -3.8 × 10 −4 0.645 μA μM −1 cm −2 This work Tables 2 and 3 for DU and FU, respectively. Acceptable recoveries obtained in the real sample studies reveal the excellent practical feasibility of the fabricated sensor.…”

Effect of covalent and non-covalent linking of zinc(II) phthalocyanine functionalised carbon nanomaterials on the sensor response to ammonia

“…The extended π-electronic system of CNTs and graphene makes them very attractive for manipulating charge transfer by combining with such electrophiles as porphyrins and phthalocyanines [30]. A wide variety of functional groups in MPc molecule is used to attach them either covalently or non-covalently to the surface of rGO [31][32][33] and CNTs [34][35][36][37][38] to obtain hybrid materials with improved sensor performance. The enhanced sensing properties are attributed to the synergistic effect of MPc and carbon materials in the hybrids due to the strong electron transfer interaction, superior electrical conductivity and gas adsorption activity [36].…”

Pyrene containing liquid crystalline asymmetric phthalocyanines and their composite materials with single-walled carbon nanotubes

“…Hybrids and composites of carbon nanomaterials with phthalocyanines are known to be obtained using three different ways, namely by covalent and noncovalent functionalization [12][13][14] of CNT or graphene with phthalocyanine derivatives and by preparation of blends containing various ratios of these two components [15]. In the literature, hybrids are refered to as materials where the main component is a carbon nanomaterial (carbon nanotubes, graphene etc.…”

“…Composites are said to be materials consisting of a phthalocyanine derivative as the main matrix in which a small amount of a carbon nanomaterial is dispersed. Hybrids of carbon nanotubes and graphene with covalently and noncovalently attached metal phthalocyanine derivatives have been studied in the literature from different points of view [1,13,16,17]. The use of hybrids of these materials for the development of chemiresistive sensors has been extensively studied in recent years [18][19][20][21][22][23].…”