TY - JOUR

T1 - Hybrid materials of zinc(II) tetra-tert-butylphthalocyanine and zinc(II) tetra-tert-butylnaphthalocyanine with single walled carbon nanotubes

T2 - Structure and sensing properties

AU - Polyakov, Maxim S.

AU - Basova, Tamara V.

PY - 2017/1/1

Y1 - 2017/1/1

N2 - The influence of extension of the aromatic core of phthalocyanines derivatives on the properties of the functionalized single walled carbon nanotubes (CNT) is studied. For this purpose the comparative study of the structural features and sensing properties of the CNT functionalized with zinc 2,9,16,23-tetra-tert-butylphthalocyanine (ZnPc) and zinc 2,11,20,29-tetra-tert-butyl-2,3-naphthalocyanine complex (ZnNc) is carried out. The adsorption of ZnPc and ZnNc molecules onto the CNT surface has been confirmed by Raman spectroscopy, SEM, and thermogravimetric analysis. It was determined that the number of ZnNc molecules anchored on the CNT walls is more than the number of ZnPc molecules. The more preferable π-π interaction of ZnNc molecules with CNT appears to be due to the bigger number of π-electrons forming naphthalocyanine aromatic system. Thin films of pristine CNT, CNT/ZnPc and CNT/ZnNc hybrids were prepared by drop casting onto interdigitated electrodes and applied as active layers to detect ammonia vapour (10-50 ppm) by measuring electrical resistance changes. It has been shown that sensor response of the CNT/ ZnNc hybrid toward ammonia vapours is lager than that of CNT/ZnPc hybrid.

AB - The influence of extension of the aromatic core of phthalocyanines derivatives on the properties of the functionalized single walled carbon nanotubes (CNT) is studied. For this purpose the comparative study of the structural features and sensing properties of the CNT functionalized with zinc 2,9,16,23-tetra-tert-butylphthalocyanine (ZnPc) and zinc 2,11,20,29-tetra-tert-butyl-2,3-naphthalocyanine complex (ZnNc) is carried out. The adsorption of ZnPc and ZnNc molecules onto the CNT surface has been confirmed by Raman spectroscopy, SEM, and thermogravimetric analysis. It was determined that the number of ZnNc molecules anchored on the CNT walls is more than the number of ZnPc molecules. The more preferable π-π interaction of ZnNc molecules with CNT appears to be due to the bigger number of π-electrons forming naphthalocyanine aromatic system. Thin films of pristine CNT, CNT/ZnPc and CNT/ZnNc hybrids were prepared by drop casting onto interdigitated electrodes and applied as active layers to detect ammonia vapour (10-50 ppm) by measuring electrical resistance changes. It has been shown that sensor response of the CNT/ ZnNc hybrid toward ammonia vapours is lager than that of CNT/ZnPc hybrid.

KW - Carbon nanotubes

KW - Chemical sensors

KW - Hybrid materials

KW - Zinc naphthalocyanine

KW - Zinc phthalocyanine

KW - THIN-FILMS

KW - BEHAVIOR

KW - COMPLEXES

KW - SENSOR

KW - COORDINATION

KW - COPPER

KW - chemical sensors

KW - LAYERS

KW - zinc naphthalocyanine

KW - carbon nanotubes

KW - NICKEL

KW - PHTHALOCYANINE

KW - hybrid materials

KW - METAL-FREE

UR - http://www.scopus.com/inward/record.url?scp=85020820632&partnerID=8YFLogxK

U2 - 10.6060/mhc161176p

DO - 10.6060/mhc161176p

M3 - Article

AN - SCOPUS:85020820632

VL - 10

SP - 31

EP - 36

JO - Macroheterocycles

JF - Macroheterocycles

SN - 1998-9539

IS - 1

ER -