摘要We employ a layer-by-layer adsorption technique for deposition on solid substrates of polyionic films of Chicago Sky Blue. Film growth was significant with the increasing number of layers. Photochemical properties of these films are investigated for different ionic concentrations. A significant blue shift is observed with the increasing ionic strength of the solution, suggesting the formation of aggregation. Temperature effect studies show some preferable reorientation of molecules in the film during cooling process. Most remarkable observation is that the absorption intensity is the highest for a particular degree of inclination. Deposition time is fixed at 15min because adsorption kinetics results show saturation after 15min.
Abstract：We employ a layer-by-layer adsorption technique for deposition on solid substrates of polyionic films of Chicago Sky Blue. Film growth was significant with the increasing number of layers. Photochemical properties of these films are investigated for different ionic concentrations. A significant blue shift is observed with the increasing ionic strength of the solution, suggesting the formation of aggregation. Temperature effect studies show some preferable reorientation of molecules in the film during cooling process. Most remarkable observation is that the absorption intensity is the highest for a particular degree of inclination. Deposition time is fixed at 15min because adsorption kinetics results show saturation after 15min.
(Langmuir-Blodgett films on solids; polymers on surfaces; biological molecules on surfaces)
引用本文:
D. Dey; M. N. Islam; S. A. Hussain; D. Bhattacharjee. Effect of Temperature and Ionic Concentration on Self-Assembled Films of Chicago Sky Blue[J]. 中国物理快报, 2008, 25(10): 3732-3734.
D. Dey, M. N. Islam, S. A. Hussain, D. Bhattacharjee. Effect of Temperature and Ionic Concentration on Self-Assembled Films of Chicago Sky Blue. Chin. Phys. Lett., 2008, 25(10): 3732-3734.
[1] Bentrand P, Jonas A, Lascheusky A and Lagras R 2000 Macromol. Chem. Rapid Commun. 21 319 [2] Kim N and Stephen E W 1985 Macromolecules 18741 [3] Aoki A, Tamagawa Y and Miyashita T 2000 Macromolecules 35 3686 [4] Justin Thomas K K, Lin J T, Tao Y T and Chuen C H 2004 Chem. Mater. 16 5437 [5] Sanda F, Nakai T, Kobayashi N and Masuda T 2004 Macromolecules 37 [6] Decher G 1997 Science 277 1232 [7] Ulman A 1991 An Introduction to Ultra Thin OrganicFilms (Boston: Academic) [8] Das S and Pal A J 2002 Langmuir 18 458 [9] Hussain S A, Dey D, Paul P K, Bhattacharjee D and Sinha S2007 Chem. Phys. Lett. 450 49 [10] Abbott L C, Bachelor S N, Oakes J, Lindsay J R and MooreJ N 2004 J. Phys. Chem. B 108 13726 [11] Gregory P 1991 High-Technology Applications ofOrganic Colorants (New York: Plenum) [12] Gregory P 1996 Chemistry and Technology of Printingand Imaging Systems (London: Chapman {\& Hall)
2008, Vol. 25 
