sol–gel chemistry is an efficient tool to control the morphology and reactivity of solids. drying is the crucial step due to the capillary forces exerted during the classic ambient drying process, which induces the collapse of the wet gel porosity. the use of n, n-dimethylformamide (dmf), a newly found dcca were found to be effective in the sol–gel synthesis of crack-free silica gel monolith fr...

Research on the properties and applications of molecules doped into sol-gel-derived silica matrices has expanded rapidly. This Account begins with a brief review of the use of the dopant molecules as probes of the changes that occur as the system evolves from the initial sol to the final xerogel during the formation of monoliths, thin films, and mesostructured films. Methods of deliberately pla...

Abstract Porous silica was synthesized from cornhusk using the sol–gel polymeric route and compared with ash obtained direct combustion process under laboratory conditions. The unmodified dissolved in NaOH for 1 h to form sodium silicate, which subsequently hydrolyzed citric acid yield a xerogel. xerogel characterized inductively coupled plasma–optical emission spectrometry (ICP-OES), Fourier t...

The methanol leaf extract of Aspila africana formulated as gels was studied for its potency on experimentally-induced wound in rats. Wounds were inflicted on Wistar rats using excision model. The extract was formulated as hydrogel and xerogel. The wound healing effects of the formulations were compared to that of a standard antibiotic, Cicatrin together with the gel bases. In all cases, there w...

The synthesis and self-assembly of two new phenylacetylene macrocycle (PAM) organogelators were performed. Polar 2-hydroxyethoxy side chains were incorporated in the inner part of the macrocycles to modify the assembly mode in the gel state. With this modification, it was possible to increase the reactivity of the macrocycles in the xerogel state to form polydiacetylenes (PDAs), leading to a si...

This work presents the monolithic integration of a fluorophore-doped hybrid xerogel polymeric light emitter and a multiple internal reflection configuration (MIR) optofluidic system in a photonic lab on a chip (PhLoC). Two different air mirrors at both sides of the emitter were implemented that improves light coupling into the MIR system. The MIR inner walls were bio-functionalized with a perox...

Although studies in vivo revealed promising results in bone regeneration after implantation of scaffolds together with osteogenic progenitor cells, basic questions remain how material surfaces control the biology of mesenchymal stem cells (MSC). We used human MSC derived from bone marrow and studied the osteogenic differentiation on calcium phosphate surfaces. In osteogenic differentiation medi...