ZnS nanoclusters in LB multilayers
作者： M. Parhizkar , N. Prasanth Kumar , B. Shukla , R.S. Srinivasa , Satish Vitta
DOI: 10.1016/J.COLSURFA.2004.10.027
关键词: Absorption (chemistry) 、 Crystallite 、 Crystallography 、 Scissoring 、 Langmuir–Blodgett film 、 Orthorhombic crystal system 、 Arachidic acid 、 Nanoclusters 、 Materials science 、 Nanocrystalline material
摘要: Abstract Zinc arachidate (ZnA) LB multilayers have been exposed to H 2 S form ZnS nanoclusters within the layered matrix of arachidic acid (AA). The as-deposited ZnA multilayer consists molecules packed in a hexagonal layer cell, with alkyl chain tilted at about 32° away from normal. FTIR and UV–vis studies show that conversion salt into formation is completed 2–3 h. Blue shift absorption onset excitonic peak ∼290 nm indicates nanocrystalline nature ZnS. TEM size ∼5 nm are formed. X-ray reflection grazing angle diffraction changes CH scissoring mode ZnS–AA composite molecular packing corresponds closely structure based on orthorhombic subcell which chains by ∼27° towards nearest neighbours. This contrast loose ‘rotator phase like’ precursor multilayer.
core.ac.uk
elsevier.com
sci-hub.se 参考文章(28)
Aleksandr Isaakovich Kitaĭgorodskiĭ, Organic Chemical Crystallography ,(1962)
Robert G. Snyder, Vibrational spectra of crystalline n-paraffins: II. Intermolecular effects Journal of Molecular Spectroscopy. ,vol. 7, pp. 116- 144 ,(1961) , 10.1016/0022-2852(61)90347-2
Ping Yang, Meng Kai Lü, Chun Feng Song, Dong Xu, Duo Rong Yuan, Xiu Feng Cheng, Guang Jun Zhou, Luminescence of Cu2+ and In3+ co-activated ZnS nanoparticles Optical Materials. ,vol. 20, pp. 141- 145 ,(2002) , 10.1016/S0925-3467(02)00060-5
R. Rossetti, R. Hull, J. M. Gibson, L. E. Brus, Excited electronic states and optical spectra of ZnS and CdS crystallites in the ≊15 to 50 Å size range: Evolution from molecular to bulk semiconducting properties Journal of Chemical Physics. ,vol. 82, pp. 552- 559 ,(1985) , 10.1063/1.448727
F.N. Dultsev, L.L. Sveshnikova, Formation of nanoclusters during the interaction of H2S with cadmium, zinc and copper behenates Thin Solid Films. ,vol. 288, pp. 103- 107 ,(1996) , 10.1016/S0040-6090(96)08836-0
Isamu Moriguchi, Hiroshi Nii, Kouhei Hanai, Hidenori Nagaoka, Yasutake Teraoka, Shuichi Kagawa, Synthesis of size-confined metal sulfides in Langmuir-Blodgett films Colloids and Surfaces A: Physicochemical and Engineering Aspects. ,vol. 103, pp. 173- 181 ,(1995) , 10.1016/0927-7757(95)03238-9
J. F. Rabolt, F. C. Burns, N. E. Schlotter, J. D. Swalen, Anisotropic orientation in molecular monolayers by infrared spectroscopy Journal of Chemical Physics. ,vol. 78, pp. 946- 952 ,(1983) , 10.1063/1.444799
Franz Grieser, D. Neil Furlong, David Scoberg, Itzumi Ichinose, Nubuo Kimizuka, Toyoki Kunitake, Size-quantised semiconductor cadmium chalcogenide particles in Langmuir–Blodgett films Journal of the Chemical Society, Faraday Transactions. ,vol. 88, pp. 2207- 2214 ,(1992) , 10.1039/FT9928802207
N.Prasanth Kumar, S.N Narang, S Major, Satish Vitta, S.S Talwar, P Dubcek, H Amenitsch, S Bernstorff, Structure of CdS–arachidic acid composite LB multilayers Colloids and Surfaces A: Physicochemical and Engineering Aspects. ,vol. 198, pp. 59- 66 ,(2002) , 10.1016/S0927-7757(01)00915-3
S. Wageh, Liu Shu-Man, Fang Tian You, Xu Xu-Rong, Optical properties of strongly luminescing mercaptoacetic-acid-capped ZnS nanoparticles Journal of Luminescence. ,vol. 102, pp. 768- 773 ,(2003) , 10.1016/S0022-2313(02)00639-7