The interaction of transition metal phthalocyanines with organic molecules: a quartz-microbalance study

Noncovalent Functionalization of Single-Wall Carbon Nanotubes for the Elaboration of Gas Sensor Dedicated to BTX Type Gases: The Case of Toluene

“…In terms of a sensing mechanism, it is reported that the interaction between the sensing materials (MCs) and the gaseous analyte occurred typically through π−π interactions 54,55 and that the metal does not provide any significant interaction with the gas analyte. 51 However, controversially, it has been reported that metalloporphyrins for example are more sensitive to toluene compared to metal free porphyrins such as OEPH 2 . 56 From the results reported here CuPctBu provides more stable and higher responses compared to OEPH 2 and TPPH 2 (see Table 1).…”

Modification of the electronic properties of the TiO2 (110) surface upon deposition of the ultrathin conjugated organic layers

“…In the AES measurements on 4-5 nm thick PTCDA films the C (275 eV) and O (510 eV) peaks were registered. In the AES measurements on 4-5 nm thick CuPc films, the C (275 eV), N (389 eV) and Cu (922, 842 and 778 eV) were measured and the relative intensities, considering the AES sensitivity factors [30], were in agreement with atomic composition of these molecules [20][21][22]. Besides these peaks, the O (510 eV) peak was clearly observed in the case of CuPc films.…”

“…Thin and ultrathin films of Cuphthalocyanine (CuPc) and 3,4,9,10-perylenetetracarboxylic acid dianhydride (PTCDA) are well studied and have shown promising electronic properties that can be used in chemical sensing and other device applications [20][21][22]. For these films, it is known that CuPc exhibits usually pronounced electrondonor properties while PTCDA acts as an electron acceptor.…”

Tetra-tert-butyl copper phthalocyanine-based QCM sensor for toluene detection in air at room temperature

“…Due to their similarity with other benzenoid aromatic compounds, they can be involved in weak and reversible non-covalent interactions with aromatic hydrocarbons like BTX and other aromatic molecules containing delocalizedelectrons system. Previously, many papers report the use of soluble metallophthalocyanines in organic solvents as sensitive materials on QCM for the detection of VOCs [29][30][31][32]. More recently, Harbeck et al [33] have reported some interesting results regarding metallophthalocyanine coatings on QCM surface to detect toluene vapor in air as well as in liquid.…”