HEXAGONAL STRUCTURED MESOPOROUS SILICA OR ALUMINA SILICA (E.G.MCM-41 AND sba-15) HAVE BEEN EXTENSIVELY STUDIED. [1] THEIR HIGH SPECIFIC SURFACE AREA, POROUS VOLUME AND ADJUSTABLE PORE SIZE MAKE THEN IDEAL SUPPORTS FOR THE PREPARATION OF HIGHLY DISPERSED HETEROGENEOUS CATALYSTS. [2, 3] THESE MATERIALS HAVE ATTRACTED SIGNIFICANT ATTENTION IN ACADEMIC RESEARCH AND THEY HAVE FOUND NOTABLE APPLICATIONS IN INDUSTRY LIKE PETROCHEMICAL INDUSTRY.CONSIDERING THE ABOVE POINTS, WE STUDIED A SIMPLE METHOD TO PREPARE SILVER SUPPORTED MESOPOROUS sba-15 AND COPPER SUPPORTED MESOPOROUS sba-15 BY VARIOUS AG AND CU INORGANIC SALTS. THE RESULTS WE OBTAINED ARE INTERESTING AND COMPARABLE.IN THE NEXT PART OF THIS RESEARCH THE EFFECTS OF NEWLY SYNTHESIZED AG-sba-15 AND CU-sba-15 ON THE SYNTHESIS OF COMPOUNDS 4 ARE INVESTIGATED.BENZALDEHYDE1, MALONONITRILE 2 AND 3-METHYL-1H-PYRAZOL-5-ONE3 ARE CONDENSED IN THE PRESENCE OF AG-sba-15 OR CU-sba-15 IN HIGH YIELDS. THE NANO CATALYSTS ARE EASILY RECOVERED AND CAN BE SUCCESSFULLY REUSED FOR SEVERAL TIMES WITHOUT LOSING REACTIVITY. THE NEW ASPECTS AND RESULTS OF THESE PROCEDURES WILL BE PRESENTED AND DISCUSSED.

RECENTLY USING MESOPOROUS CATALYSTS HAVE BEEN SHOWN INCREASING ATTRACTION IN ORGANIC SYNTHESIS [1]. ON THE OTHER HAND IMINOCOUMARIN DERIVATIVES ARE AN IMPORTANT GROUP OF FLUORESCENT ORGANIC COMPOUNDS RECENTLY CONSIDERABLE EFFORTS HAS BEEN ATTENDED TO THE DEVELOPMENT OF COLORIMETRIC AND FLUORESCENT CHEMOSENSORS BASED ON IMINOCOUMARIN [2, 3]. WE HAVE ALREADY REPORTED THE PROCEDURES FOR SYNTHESIS OF A LIBRARY OF FLUORESCENT COMPOUNDS [4]. HERE WE WISH TO REPORT A HIGHLY EFFICIENT SYNTHESIS OF NOVEL DYES CONSISTING AZO IMINOCOUMARIN USING sba-15. AZO DYES1 IN THE PRESENCE OF AG-sba-15 OR ZR-sba-15 CONDENSED WITH MALONONITRILE TO PRODUCE THE 2 AND 3, WHICH CAN BE USED FOR FURTHER RESEARCH. STRUCTURES 2 AND 3 ARE ELUCIDATED FROM THEIR IR, UV-VISIBLE, 1HNMR, 13CNMR SPECTRA AS WELL AS MASS SPECTRAL DATA. NEW ASPECTS OF THIS PROCEDURE AND FURTHER RESULTS ON PHOTOELECTRONIC PROPERTIES OF THE NEW COMPOUNDS WILL BE PRESENTED AND DISCUSSED.

IT IS WELL DOCUMENTED THAT COUMARINS ARE NOWADAYS AN IMPORTANT GROUP OF FLUORESCENT ORGANIC COMPOUNDS.THEY ARE USED AS OPTICAL BRIGHTENING AGENTS AND LASER DYES. THERE ARE SOME COUMARINS THAT MARKET FOR DYEING POLYESTER FIBRES, ALSO AS SUN PROTECTING AGENTS. LITERATURE SHOWS VARIOUS REPORTS ON SYNTHESIS AND BIOLOGICAL ACTIVITIES OF COUMARIN DERIVATIVES SUCH AS ANTI-TUMOUR, ANTI-CANCER, ANTI HIV, ALZIMER AND CARDIO PROTECTIVE AGENTS. [1] IN OUR RECENT INVESTIGATION HIGHLY FLUORESCENT COMPOUNDS WERE SYNTHESIZED BY AN EFFICIENT PROCEDURES [2, 3]. HERE IN, WE WISH TO REPORT NEWLY PREPARED AG-sba-15 AS CATALYST FOR THE SYNTHESIS OF SOME NEW AZO COUMARIN DYES.AZO SALICYLALDEHYDES1 CAN BE CONDENSED WITH CH-ACID COMPOUNDS SUCH AS ETHYLACETOACETATE 2 IN THE PRESENCE OF AG-sba-15 TO AFFORDED AZO COUMARIN DYES 3 IN HIGH YIELDS. THE PROCEDURE IS VERY SIMPLE AND NANO-CATALYST CAN BE EASILY RECOVERED FROM DYES AND USED FOR SEVERAL TIMES WITHOUT LOSING CATALYTIC ACTIVITY. NEW ASPECTS OF THIS PROCEDURE WILL BE PRESENTED AND DISCUSSED.

sba-15 NANORODS WITH HIGH SURFACE AREA (1010 M2G-1) WERE FUNCTIONALIZED BY POST GRAFTING METHOD WITH 3-AMINOPROPYLTRIETHOXYSILANE (APTES). THE PREPARED MATERIALS WERE USED AS NANOCARRIERS FOR ANTICANCER DRUG DELIVERY. GEMCITABINE WAS USED AS A REPRESENTATIVE ANTICANCER DRUG. THE ADSORPTION AND RELEASE PROPERTIES OF NON MODIFIED AND ORGANIC FUNCTIONALIZED MESOPOROUSSILICAS WERE INVESTIGATED. THESE MESOPOROUS MATERIALS WERE CHARACTERIZED BY SMALL ANGLE X RAY SCATTERING (SAXS), FOURIER TRANSFORM INFRARED SPECTROSCOPY (FTIR), SCANNING ELECTRON MICROSCOPY (SEM), TRANSMISSION ELECTRON MICROSCOPY (TEM), N2 ADSORPTION/DESORPTION ANALYSIS AND ULTRA VIOLET SPECTROSCOPY (UV).OUR STUDY REVEALED THAT THE SURFACE FUNCTIONALIZATION OF sba-15 NANORODS INCREASE THE INTERACTION OF THE SURFACE AND GEMCITABINE AND RESULTS IN THE LOADING ENHANCEMENT OF THE DRUG. IN ADDITION, THE DRUG RELEASE RATE OF MODIFIED SAMPLE IS PH DEPENDENT.

WE REPORT ON AN INORGANIC–ORGANIC HYBRID NANO-COMPOSITE THAT REPRESENTS A NOVEL KIND OF COATING FOR INSIDE NEEDLE CAPILLARY ADSORPTION TRAP (INCAT) OF POLYCYCLIC AROMATIC HYDROCARBONS (PAHS). POLYANILINE/sba-15 NANOCOMPOSITE WAS SYNTHESIZED VIA CHEMICAL POLYMERIZATION TECHNIQUE.....

THE SENSITIVE AND SELECTIVE DETECTION OF ANIONS IS ESSENTIAL, CONSIDERING THEIR GROWING HAZARDS TO ENVIRONMENT AND HUMAN HEALTH. DURING THE PAST DECADE CONSIDERABLE EFFORTS HAS BEEN DEVOTED TO FLUORESCENCE SENSING OF ANIONS ON ACCOUNT OF EXCELLENT DETECTION ACCURACY AND FAST RESPONSE [1]. MESOPOROUS NANOSTRUCTURE WITH LARGE SURFACE AREA, PORE VOLUME, HYDROPHOBICITY, AND EASY RECYCLABILITY WOULD ALLOW THEM TO BE FAVORABLY USED AS A HETEROGENEOUS OPTICAL SENSORS FOR HIGHLY SENSITIVE DETECTION OF SPECIFIC GUESTS [2-4].IN THIS WORK WE DESIGNED AND SYNTHESIZED A NOVEL MESOPOROUS SYSTEM. AT FIRST, BENZOTHIAZOLE BASED LIGAND GRAFTED TO THE SILICA SURFACE BY POST SYNTHESIS METHOD, THE FINAL PRODUCT WAS OBTAINED VIA COMPLEXATION REACTION BETWEEN BENZOTHIAZOLE BASED LIGAND FUNCTIONALIZED sba-15,ZN2+ IONS AND ADDITIONAL 8-HYDOROXYQUINOLINE LIGAND THAT NAMED sba-BT-ZN-Q, CHARACTERIZATION OF THESE NANOSTRUCTURE WAS PERFORMED BY FT-IR, LOW ANGLE XRD, TEM, BET, TGA AND PL.THE FLUORESCENCE SPECTRUM OF THE sba-BT-ZN-Q SUSPENDED IN AQUEOUS MEDIUM SHOWED A SELECTIVE QUENCHING RESPONSES TOWARD DICHROMATE AND PERIODATE IONS IN COMPARISON OTHER ANIONS.

SANTA BARBARA AMORPHOUS (sba-15) IS SIGNIFICANT MESOPOROUS SILICA WITH EXCLUSIVE AND IMPORTANT PROPERTIES OF HIGHLY ORDERED MESOPORES, HYDROTHERMALLY STABLE AND THICK WALL, PROFUSELY LARGE SURFACE AREA AND HUGE PORE VOLUME WHICH RENDER IT AS SORBENT FOR WIDE APPLICATIONS SUCH AS HEAVY METALS REMOVAL. IN THIS STUDY, SYNTHESIS AND PREPARATION OF sba-15 AND ITS NANOCOMPOSITE CONTAINING POLYPYRROLE (PPY) WAS DISCUSSED, AND THEIR CAPABILITY TO REMOVAL OF MERCURY (HG) FROM AQUEOUS SOLUTION WAS STUDIED. POLYPYRROLE WAS PREPARED BY CHEMICAL OXIDATIVE POLYMERIZATION OF PYRROLE USING FECL3 AS AN OXIDANT AND COATED ON sba-15 (PREPARED WITH SOL-GEL METHOD). THE REMOVAL OF HG WAS INVESTIGATED USING PPY, AND PPY/sba-15 NANOCOMPOSITE, RESPECTIVELY. THE PRODUCTS WERE INVESTIGATED IN TERMS OF MORPHOLOGY AND CHEMICAL STRUCTURE WITH TRANSMISSION ELECTRON MICROSCOPY (TEM) AND BET TEST, RESPECTIVELY. BATCH STUDIES WERE PERFORMED TO EVALUATE THE INFLUENCE OF VARIOUS EXPERIMENTAL PARAMETERS LIKE PH, ADSORBENT DOSAGE AND CONTACT TIME. OPTIMUM CONDITIONS FOR HG REMOVAL WERE FOUND TO BE PH=8, ADSORBENT DOSAGE OF 1 G/L AND EQUILIBRIUM TIME 60 MIN.