TY - JOUR
T1 - Titanium phosphonate porous materials constructed from dendritic tetraphosphonates
AU - Vasylyev, Maxym V.
AU - Wachtel, Ellen J.
AU - Popovitz-Biro, Ronit
AU - Neumann, Ronny
PY - 2006/4/24
Y1 - 2006/4/24
N2 - An organic-inorganic hybrid material. TPPhA-Ti, was constructed by non-hydrolytic condensation of a dendritic tetrakis-1,3,5,7-(4- phosphonatophenyl)adamantane precursor and titanium(iv) isopropoxide. One preparative pathway yielded insoluble materials with a Ti/P ratio of ∼1 which was confirmed by a combination of FT-IR, TGA, and EDS measurements. N 2 sorption experiments showed that TPPhA-Ti is a porous solid (micro pores ∼13 Å; mesopores ∼38 Å) with a high surface area, ∼550 m2g-1. The structure and morphology of the TPPhA-Ti as investigated by transmission and scanning electron microscopy showed a layered-type material. Additional X-ray diffraction data suggest a paracrystalline material; an optimization of possible molecular arrangements of TPPhA-Ti was simulated that was in agreement with the experimental data. A second preparative pathway yielded a Ti oxide-phosphonate with a Ti/P ratio of ∼3.4. Both TEM and SEM revealed that hollow nanospheres were formed with diameters of ∼180- 300 nm.
AB - An organic-inorganic hybrid material. TPPhA-Ti, was constructed by non-hydrolytic condensation of a dendritic tetrakis-1,3,5,7-(4- phosphonatophenyl)adamantane precursor and titanium(iv) isopropoxide. One preparative pathway yielded insoluble materials with a Ti/P ratio of ∼1 which was confirmed by a combination of FT-IR, TGA, and EDS measurements. N 2 sorption experiments showed that TPPhA-Ti is a porous solid (micro pores ∼13 Å; mesopores ∼38 Å) with a high surface area, ∼550 m2g-1. The structure and morphology of the TPPhA-Ti as investigated by transmission and scanning electron microscopy showed a layered-type material. Additional X-ray diffraction data suggest a paracrystalline material; an optimization of possible molecular arrangements of TPPhA-Ti was simulated that was in agreement with the experimental data. A second preparative pathway yielded a Ti oxide-phosphonate with a Ti/P ratio of ∼3.4. Both TEM and SEM revealed that hollow nanospheres were formed with diameters of ∼180- 300 nm.
KW - Dendrimers
KW - Layered materials
KW - Nanospheres
KW - Organic-inorganic hybrid composites porous materials
KW - Titanium phosphonates
UR - http://www.scopus.com/inward/record.url?scp=33646191894&partnerID=8YFLogxK
U2 - 10.1002/chem.200501143
DO - 10.1002/chem.200501143
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AN - SCOPUS:33646191894
SN - 0947-6539
VL - 12
SP - 3507
EP - 3514
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
IS - 13
ER -