The preparation of high functional thin films by an electroless-plated method were studied on the two items of thermally-stable thin film resistors and perpendicular magnetic recording media.
In the research on the thermally-stable thin film resistors, the nickel molybdenum alloy film, developed for the thin film having low TCR and high thermal stability was investigated by the structural analysis with a comparison of an usual electroless-plated NiP film. Very fine crystal structure was formed at as-plated conditions and it makes the film highly thermally-stable.
In the research on the perpendicular magnetic recording media, the perpendicular anisotropic thin film, realized by the cobalt alloy plated films showed the thickness dependence of perpendicular coercivity, Hc(⊥). It is a very important factor to control the recording characteristics. The cobalt alloy recording media with the underlayer of various electroless-plated films were evaluated by a ring-type head. The media with quasi-softmagnetic underlayer showed so-called double layer effect and the NiWP underlayer enhanced crystallinity of cobalt alloy. When using NiWP-plated underlarer, having the both effects gave the very high recording density. The potential of the layer medium was also discussed using a ring-type head.

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A fundamental research was carried out on the physicochemical properties of the iron(III)chloride-methanol system and on the feasibility of the system as the chemical heat storage material. It was found that ( 1 ) the heat of solution of iron(III) chloride into methanol is 92 kJ per mole which is large enough to construct a dilution-concentration type heat recovey system with a low temperature heat source., ( 2 ) Solubilities, boiling points and densities of iron(III) chloride-methanol solutions were measured and specific heat was estimated. Th e temperature increase per one cycle was calculated to be about 20°C for the dilution of the solution from 1/3.5 mole fraction of iron(III) chloride to 1/6 mole fraction under atomospheric pressure.

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A simple method for the determination of the activation energy and the frequency factor of the Arrhenius equation was developed, An equation which correlates the reaction time with temperature in an ordinary linear programmed temperature experiment was derived and was successfully applied to evaluate the Arrhenius expression of the rate constants of several reactions.
In this method, the Arrhenius expression can be determined by only a single run of rate measurment instead of the multiple runs as a function of temperature. The decomposition of hydrogen peroxide and the saponification of ethyl acetate were analyzed by this method; thus obtained rate parameters were shown to agree with those from conventional methods.

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Adsorption of metal ions onto the Dowex cation ion-exchange resin, HCR-W2, and ratedetermining steps of the adsorption reaction were examined by means of a batch method in the presence of magnetic field. Metal ions used were Fe(III), Ni(II), Co(II), Cu(II) and Zn(II). The magnetic flux density was 0.25T. Adsorption rates of Fe(III) and Ni(II) i ons were increased by about 5-10% by the presence of the magnetic field. Magnetic field does not affect on the degree of swelling, the structure of the resin, viscosities and electric conductivities of sample solutions, and total ion exchange capacities. It was found that the rate-determining step of Fe(III) adsorption is the diffusion in the particles, and its diffusion coefficient is increased from 1.01 x 10^-7 to 1.35 x 10^-7 cm²⋅s- by the presence of the magnetic field. The ion exchange reaction pf Ni(II) ion was found to be governed by particlediffusion and ion exchange reaction, and its rate constant is increased from 3.00 x 10^-5 to 3.44 x 10^-5 s^-1 by the presence of the magnetic field.

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The effects of thermal surface-oxidation and Ni addition on the corrosion resistance and magnetic properties of acicular Fe₄N particles were studied. The corrosion resistance was evaluated by measuring the loss-rate of saturation magnetization in a humid air (90% R. K)at 60°C in 75 h. The surface-oxidation improved the corrosion resistance but concomitantly the saturation magnetization deereased, while the Ni addition improved the corrosion resistance to a small extent. However, combination of surface-oxidation and Ni addition led to high stabilization and high saturation magnetization to Fe4N particles. The corrosion resistance of magnetic tapes fabricated with these particles was comparable to that of commercial 8 mm video tapes.

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Nine kinds of polyelectrolytes (polymers) with different molecular weights (600-22000) and functional groups (carboxyl, hydroxyl and sulfo) were employed to examine the effects of molecular weight and structure of polymers on the dissolution of hydroxyapatite (HAP) in aqueous media. It is found that the addition of any polymer facilitates the dissolution of HAP by chelation of Ca²⁺ ions. The dissolving power of the polymers for HAP increases with increasing the molecular weight and the mole fraction of carboxyl group. A small amount of polymer is always adsorbed on HAP while most of it dissolve HAP. The adsorption results from the exchange reaction between COO- groups of the polymer and PO₄^3- ions at the surface of HAP. The amount of adsorbed polymer decreases as its chain length increases, probably due to a steric hindrance effect.

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The water-in-oil (W/O) type emulsions composed of 1-0-alkylglycerol (GE), liquid paraffin and water became more viscous and stable when a certain amount of MgSO₄ was added. Since this emulsion system is considered to be stabilized by the liotropic liquid crystal of GE, the influence of addition of inorganic salts on the properties of the liquid crystal was investigated.
Though the liquid crystals of GE containing a certain amount of MgSO4 had a reversed hexagonal structure, as well as those without MgSO₄, the maximum water content was reduced with increasing MgSO₄ concentration. DSC measurement showed the addition of MgSO₄ made the interaction between GE and water smaller, and it consequently made th e hydrophilic portion of GE molecules more closely packed in the liquid crystals. As the result, the interplanar distance determined by small angle X-ray scattering decreased due to the contraction of the liquid crystals, and the dynamic elastisity became larger. Similar results were obtained with other inorganic salts.
Thus it is concluded the stabilization of W /O emulsions by the addition of inorganic salts is attributed to the enhancement of the rigidity of the interfacial layer constructed by the liquid crystals.

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An approach to an amperometric oxygen sensor operative at room temperature was conducted through three types of sensor elements using NAFION membrane (Figs.1 and 10( a )). With an electrochemical cell consisting of a sheet of NAFION membrane and a couple of Pt black electrodes (sensor A), it was necessary to supply H₂ over the counter electrode to obtain a sensing signal to oxygen (Fig.3). The short-circuit current of the sensor increased with increasing oxygen partial pressure (Fig.2). The open-circuit voltage (electromotive force)varied logarithmically with the partial pressures of oxygen and hydrogen with theoretical slopes of an H₂-O₂ fuel cell (Fig.5). As a next step, a pair of the above type elements were laminated with a porous spacer sandwiched in between (sensor B), where the inner cell was designed to function as a hydrogen self-generation system at an external voltage above ca. 0.8V(Fig.6). The short-circuit current of the outer cell of sensor B was found to increase with increases in the oxygen partial pressure in the gas phase as well as dissolved oxygen concentration in water (Figs.7 and 9). The 90% response times of sensor B were as short as about I min and 2 min for increasing and decreasing oxygen partial pressure, respectively (Fig.8). Finally, the outer cell of sensor B was covered with antimony(V) oxide as a gasdiffusion layer (sensor C). It was found that the short-circuit current of sensor C could vary linearly with oxygen partial pressure (Fig.10(b)), with a 90% response time of about 3 min at room temperature (Fig.11).

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Dental calculus is a hard crystalline deposit of calcium phosphates such as hydroxyapatite and its precursor phases. In the present work, the effects of condensed phosphates on the calcification reaction and on the growth process of hydroxyapatite, which is considered to be the final product in calcification process, have been investigated. The results have shown that triphosphate inhibited conversion of the precursors into hydroxyapatite. This is due to the adsorption of triphosphate onto the precursor surface. Furthermore, it has been found that the marked inhibitory effects of triphosphate on hydroxyapatite crystal growth and dissolution can be interpreted in terms of a Lang muir-type adsorption model, assuming that the active sites are blocked by the adsorption on the surface. A similar effect has also been observed for cyclo-hexaphosphate with a higher degree of polymerization than that of triphosphate. In contrast to these linear phosphates, no adsorption of cyclic cyclo-triphosphate was detected

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A hydroxyapatite (HAp) has been synthesized using phytin as a P-source. Phytin is contained in rice bran which can be extracted by acid or alkali from oil-less rice bran. Here phytin was extracted from 10 g of oil-less rice bran by a HC1 solution (0.01 mol⋅dm^-3100 ml) at 60°C for 1 h. The cations of Fe⁸⁺, Mg²⁺, K⁺ etc. in solution were removed by passing the solution through a column of cation-exchange resin. The mixtures of CaCO₃(0.7 g) and Ca(OH)₂(0.3 g) were added to the extract of 200 ml containing phytin and stirred at 60°C for 1 h. to obtain the precipitate of calcium phytate. The precipitates were washed, dried, and finally fired at 1000°C for 3 h. to obtain HAp powders. The formation process of calcium phytate were observed with SEM. While the shape of calcium phytate obtained was spherical particles of 0.2-0.5μm in diameter. The atomic ratio Ca/P of HAp powder obtained was 1.67.

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Bis[1-(p-substituted phenyl)-1, 3-butanedionato]manganese(n) complexes, MnL₂x H₂O(x=1, 2) and MnL₂ (L=p-XC₃H₄COCHCOCH₃, X = NO_, [1], COOCH₃ 21 Br [₃], Cl[4], H[5], NHCOCH₈ [6], C₂H₅ [7], CH, [8], OCH₃[9], OH[10]), were synthe sized, and their configuration and some properties were determined by the magnetic and spectral measurements.
[1a ], [3 a]-[10a] of the MnL₂.2 H₂O type were the mononuclear high spin complexes with an octahedral configuration. However, [2 a] of the MnI.21-120 type and [1b]-[10 b]of the MnL₂ type were the bi- and trinuclear octahedral complexes, respectively. In pyridine and DMSO, all the complexes were smoothly converted into the mononuclear octahedral ones, MnL₂.2 solv (solv=pyridine or DMSO). The reflectance and absorption bands of π→πtransition, charge transfer and 4T1g(G)←6A_1g(S) transition in solid state and in solvents were observed at (28-33) x108, (21-25) x108 and (17-20) x 108 cm^-1, respectively. From the shift of IR absorption bands arising from the metallic chelate ring and of the 4T_1g(G)←6A_1g(S) transition, it was concluded that an electron donating substituent increases the strength of Mn-O bond and the stability of complexes.

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EXAFS was applied to analyse the structure of hopeite, specified as Zn3(1104)2.4H 2U and Zns_sMnx(PO4)2.4 H 20. The oxygen corresponding to first neighboring atom of the z inc appeared at 1.46Å and 1.44Å. (Figs.1 and 2). Since ∅(K) contained a deviation of phase shift, these data imply apparent bond distances. Therefore, reverse operation of Fourjer transform and curve fitting were carried out to determine the real bond distances. Th ee results obtained were 1.94Å for the former and 1.96Å for the latter (Figs.3 and 4, Table 1). It was found that the bond \distances expressed Zn-O bond due to a tetrahedron structure of [Zn0₄] in hopeite. The coordination number of zinc atom was about four, revealing the [ZnO₄] structure. Information relating to Zn-O bond of a octahedron structure of [ZnO₂. (H₂O)₄] was not acquired.
Reverse operatio n of Fourier transform and curve fitting of the 2 nd to 4 th peaks were performed (Figs.5 and 6) and found that all the peaks corresponded to a Zn-P relation. The coordination number to zinc for the 2 nd peak was about one. Accordingly, the 2 nd peak contained information about the nearest phosphorus atom to zinc in [ZnO₄] group (Table 1).
There was a difference by 0.5Å for the Zn-O distances between the Fourier transform of EXAFS and the reverse operation of Fourier transform. It was revealed that the difference corresponds to the deviation of phase shift. The bond distances of Zn-O and the interatomic distances of Zn-P were consistent with crystallographic data. The curve fitting method of EXAFS gave significant knowledge including information about coordination number tc characterize hopeite crystals.

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A new method for obtaining the kinetic parameters from non-isothermal thermogravimetric analysis is proposed. This method is simple and applicable to n-th order reactions where n is arbitrary. The order of reaction is estimated from experimental TG curves obtained by different heating rates. The application of this method t9o pyrolysis of calcium oxalate presented. The results are in good agreement with previously reported method.

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The electronic absorption spectra of tropolone either in a mixed solvent of methylcyclohexaneisopentane (1: 1) or a polyethylene film were measured at room temperature and 77 K. The spectral data as well as the results of MO calculations demonstrated the formation of a tropolone dimer in the 'mixed solvent at low temperatures, which possesses a cyclic structure due to hydrogen bonding. The polarized absorption spectrum of tropolone monomer was measured in the stretched polyethylene film at 101 K, and the origins of the two differently polarized electronic transitions in the wavelength region of 210--260 nm have been clarified, being at 249.7 nm and at 244.7 nm. The spectral changes on the dimer formation observed for the lowest two electronic bands at 373.4 nm and 321.3 nm of the monomer are explained in terms of an exciton splitting model.

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Three 13-aryl-13 H-dibenzo[a, i]fluoren-13-ols ( 3 ) (13-(2-methylphenyl)- (3 a), 13-(3methylpheny1)- (3 b), and 13-(2-methyl-1-naphthyl)-, 13 H-dibenzo[a, Cfluoren-13-01 (3 c))were synthesized by the reaction of 13 H-dibenzo[a, i]fluoren-13-one ( 2 ) with three aryllithiums. Reduction of ( 3 ) with HI in acetic acid gave the -corresponding 13-aryl-13 Hdibenzo[a, i]fluorenes ( 4 ).,
The rotational barrier (δG^≠) abo ut the Cso-Cso single bond in 13-(2-methylpheny1)-13 Hdibenzo[a, i]fluorene (4 a) was determined by means of the DNMR method (δG^≠ap, sp =18.6 6 kcal/mol, δG^≠spap=18.70 kcal/mol). Furthermore, the rates of isomerization for th e process of ap--. sp and sp--*ap of isolated (3 c) and (4 c) were measured at various temperatures on their 'H-NMR spectra, respectively, and the δG^≠ values for each process were obtained c): δG^≠ap-sp =24.96 kcal/mol, δG^≠sp-ap=23.24kcal/mol. (4c): δG^≠ap-sp=34.78kcal/mol, δG^≠sp-ap=34.52 k cal/mol)

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The aldol addition reactions of dianions derived fro m nonbranched nitroalkanes with electrophiles are known to give products in which carbon-carbon bonds are formed exclusively at the a-carbon of the nitro group via a, a-dianions. A change in the regioselectivity, from a, a- to a, p-dianion, was observed when the sequence of addition of reagents was changed, Addition of n-BuLi to a THF solution of nitroalkane and HMPA (procedure A)gave an 'a-addition product whereas a-addition was predominant when nitroalkane was added to the THF solution of n-BuLi and HMPA (procedure B). The electrophile was added to the solution of the dianion finally in both procedures. In a typical example, the reaction of benzaldehyde with nitroethane dianion (procedure A)gave 14% of the 9-adduct. On the contrary, procedure B (molar ratio of HMPA: n-BuLi=2.6: 1; nitroethane was added at 90°C) afforded the j9-adduct with 95% selectivity and in high yield. Exte nsive studies of this reaction with other electrophiles showed that /3-selectivity depends on the molar ratio of HMPA/n-BuLi and the reaction temperature at the stage of the deprotonation of nitroalkane.

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An efficient and simple method for conversion of a-aryl-N-phenylnitrones [1] into N-benzylideneanilines [3] with diiodotriphenylphosphorane [2], which is formed from triphenylphosphine and iodine, has been investigated. The reaction was completed in a s hort time at room temperature in benzene to give [3] j in high yields (92-96%). The reaction rate was affected by an amount of iodine, and th e reaction was completed immediately by the use of excess of iodine to the phosphine, while the reaction was not completed with a catalytic amount of iodine under the same conditions for 24 h. On the other hand, [1] was deoxygenated except for nitro and dimethylamino derivatives with the phosphine and a catalytic amount of iodine in dichloromethane to give [3]in high yields (94-97%).

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Guaiazulene [1] J in DMSO was electrochemically oxidized for 13.5 h in an undivided cell equipped with Pt electrodes, where the constant current 10 mA was applied by using Et4NOTs as supporting electrolyte. The reaction gave three kinds of major products, 3, 3'- and 2, 3'biguaiazulene [2], [3] and 3, 2': 3', 3"-terguaiazulene [4], in addition to four kinds of minor ones, 3, 3'-methylenebis(guaiazulene) [5], 6-(5-isopropyl--3, 8-dimethy1-1-azulenyl)-5-isopropyl-3, 8-dimethy1-1 (6 H)-azulenone [6], 1-(3-guaiazuleny1)-6 a-isopropyl-2, 5-dimethyl1 a, 6 a-dihydrocycloprop [f] inden-3 (1 H)-one [7], and 3-guaiazulenecarbaldehyde [8] . Their structures were determined by UV, MS, IR, and NMR data. Possible reaction pathways are proposed for the formation of these seven products.

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Several 9-substituted 9-(2-bromomethylphenyl)fluorene derivatives [1] (9-substituents: OH, CH2OH, COOH, COCH₃, and COOCH₃) were synthesized, and the reaction of [1] with bases gave spirofluorenes containing an o-phenylene group in their ring system in good yields. Furthermore, a few 9-[2-(hydroxyalkyl)pheny1]-9-fluorenols [2] (hydroxyalkyl groups: CH₂OH, CHC(CH₃)₂0H, CH₂C(CH₃)(CA)OH, and CH₂C(C₂H₅)₂0H) were prepare4, and the corresponding spirofluorenes were obtained from the intramolecular dehydration of [2]by heating in acetic acid. Mechanisms for the formation of these spirofluorenes were also discussed.

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The Diels-Alder (DA) reactions of three kinds of 2-pyrone-5-carboxylates with acyclic vinyl ethers gave six stable endo-8-alkoxy-3-oso-2-oxabicyclo[2.2.2]oct-5-ene-6-carboxylates (major) 1D and six exo isomers [2]. The analogous reaction of methyl 2-pyrone-5carboxylate with cyclic vinyl ether, 2, 3-dihydrofuran, afforded methyl 9-oxo-3, 8-dioxatricyclo [5.2.2.0 2.6]undec-10-ene-11-carboxylate (endo adduct) [3] and its exo isomer [4]. On the other hand, reaction with fumaronitrile at high temperature gave methyl endo-7, exo-8dicyano-3-oxo-2-oxabicyclo[2.2.2]oct-5-ene-6-carboxylate [5], whereas reaction with tetracyanoethylene gave no adducts. As 2-pyrone-5-cfa. rbox ylates readily reacted with electron-rich olefins and poorly reacted with electron-deficient olefins with difficulty, these DA reactions seem to be of inverse electrondemand type. The reactivity of methyl 2-pyrone-5-carboxylate with ethylenes diminished in the order; acyclic vinyl ethers (ethyl vinyl ether >2-chloroethyl vinyl ether) >cyclic vinyl ether (2, 3-dihydrofuran). These facts suggest that steric influences and ionic effects are exerted at the reaction points. The DA adducts were hydrolyzed to give isophthalic acid derivatives [7] [8], [9] or 1, 3, 5-benzenetricarboxylic acid derivatives.

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In the presence of a variety of bases as a catalyst the reaction of perfluoro(2-methyl-2pentene) [1] with 2-mercaptoethanol [2] in acetonitrile was investigated to know the effect of their basicity both on the kind and yield of each product. Of particular interest is the fact that the products and yields are markedly affected not only by the basicity of catalyst but also the order of addition of starting materials.
In the presence of triethylamine, dropwi se addition of the [2] to a solvation of [1] in acetonitrile, gave a five-membered heterocyclic compound, 2-pentafluoroethy1-2[1 H-perfluoro(1-methyl-ethyl)]-1, 3-oxathiolane [4]as the sole product, in 92% yield.
On the contrary, the compound [4] and bis[perfluoro(1-ethy1-2-me thyl-l-propenyloxy)ethyl] disulfide [7] were obtained as the main products, when the order of addition was reversed.
On the other hand, the reaction of [1] with [2] using potassium fluoride or potassium carbonate as a basic catalyst is more complex and afforded the compound [4 ], a sevenmembered heterocyclic compound, 5, 7-difluoro-5-pentafluoroethy1-6-trifluoromethy1-2, 3dihydro-5 H-1, 4-oxathiepin [5], 2-[perfluoro(1-ethyl-2-methyl-1-propenylthio)]ethanol [3], and 1-[perfluoro (1-ethyl-2-methyl-l-propenyloxy)]-2-[perfluoro(1-ethyl-2-methyl-1-propenylthio)]ethane [6]. In the case of potassium fluoride or potassium carbonate being used, the kinds of products were not affected so much by the order of addition of reagents.
These results are summarized in Tables 1 and 2.

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Decomposition of ethylene glycol under ultraviolet irradiation by the combined use of an ozone oxidation method and an electrolytic one was studied by changing the concentration of ethylene glycol, that of ozone in the feed gas, the current density, the quantity of added NaC1 and the ultaviolet intensity of a low pressure mercury lamp. The overall reaction rate was represented as follows.
_??_
where k is the rate constant, I is the ultraviolet intensity of a low pressure mercury lamp, F is the concentration of ozone in the feed gas, and C is that of ethylene glycol. Glyoxylic acid, glyoxal, glycolaldehyde, formaldehyde and formic acid were detected as decomposition products, and the decrease of the total organic carbon (TOC) was also observed. The timedependence of the TOC and that of the product composition suggested that the TOC removal via the formation of formic acid is dominant in the electrolytic process, and that via the formation of oxalic acid is dominant by the ultraviolet irradiation, The TOC removal has been found particularly effective at high concentrations of ethylene glycol.

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Effect of iron(III) ions on the polymerization of methyl methacrylate (MMA) initiated by the p-methylaminophenol-H202 redox system was investigated at 300C. The rate of polymerization increased significantly by addition of a trace amount of iron(ll). The mole ratio of reacted H202 to p-methylaminophenol (MAP) was about 2 in the presence of MMA, whereas in the absence of MMA it was greater than 2. Polymerization of MMA did not take place without H202. These results suggested that (1) polymerization could be initiated by OH radicals, ( 2 ) a part of MAP radicals is consumed for primary radical termination, while a large number of those is further oxidized by iron(III), and ( 3 ) OH radiCals participate in polymerization of MAP in the absence of MMA.

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Synthesis, structure and properties of electrically conducting polymers from various aromatic amines were investigated. The amines include aniline (A), diphenylamine (DPA), Nphenylp-phenylenediamine (PPD), N, N'-diphenyl-p-phenylenediamine (DPPD), N-isopropylN'-phenyl-p-phenylenediamine (PrPPD) and N, N'-diphenylbenzidine (DPBz). The polymers prepared by chemical oxidation of the amines with ammonium peroxodisulfate in 2 moldm-3 hydrochloric acid were classified into two types, i. e. the polymers from A, PPD, DPPD and PrPPD (type I ) and the polymers from DPA and DPBz (type II). The conductivity of the type I polymers ranged from 10-^-1 to 10¹Sicrn, while that of the type II polymers was 10^-6-10^-4S/cm. From elemental analysis and infrared spectroscopy, the type I polymers w ere found to be substantially identical to polyaniline. In the formation of polyaniline, the radical cations of semiquinone type were assumed to play an important role. The type JI polymers were found to be composed of a copolymer of N-phenylaniline-N, 4-diyl based on N-C coupling and diphenylamine-4, 4'-diyl based on C-C coupling, . respectively. The polymers from A and DPPD showed ESR spectra with higher spin density, i. e.2.3 x 10²⁰ and 1.2 x10²⁰ spin/g, respectively, than the polymer from DPA, i. e.7.1 x10¹⁹ spin/g. The former two polymers showed higher temperature dependence of δH than the latter, suggesting motional narrowing of the spin.

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For surface treatment of silicon nitride, surface properties such as the amount of surface hydroxyl groups, and surface acidity and basicity were examined. The surface reactions of the silicon nitride with various organic acids, amines and propylene oxide were also carried out in an autoclave at 200°C for 3 h and degree of surface reaction was determined by ESCA. The effect of the surface treatment was evaluated by disperisibility in hexane-water system and sedimentation in hexane.
The followings were known by this study. ( 1 ) The amount of surface hydroxyl groups on silicon nitride (Fig.1) was comparable to that on silicon oxide ( 2 ) Weak acidity (Ho>3.3)probably due to surface hydroxyl groups was found for silicon nitride. The amount of the acid site was maximal (23 μmol/g) by heat treatment at the temperature around 800°C (Fig.3). ( 3 ) Highly lipophilic surface of silicon nitride was formed by the treatment with propylen e oxide and amines having a long carbon chain such as hexadecyl amine and octadecyl a mine (Table 4).

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Several amphiphilic cyanine dyes which have phenylcyclohexyl group as a mesogenic group, were synthesized and the formation of monolayers and LB films were studied. The mixture of p-(trans-4-pentylcyclohexyl)phenol (1 mol) and α, ω -dibromoalkane (1.1 mol) in ethanolic potassium hydroxide solution were refluxed to form w-bromoalkyl p-(trans-4-pentylcyclohexyl)phenyl ether [4] Two monomethinecyanin. e dyes [8] and four trimethinecyanine dyes [9]were obtained from [4].
Surface pressure-area (π-A) i sotherms on a cadmium containing aqueous solution showed that these dyes form stable monolayer and the limiting areas per molecule were ca.0.5 nm²for [8] and ca.0.7 nm² for [9]. The UV-Vis spectra of the LB films were measured and discussed.

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