Synthesis of Conductive Carbon Aerogels Decorated with β-Tricalcium Phosphate Nanocrystallites

Abstract

there has been substantial interest in research aimed at conductive carbon-based supports since the discovery that the electrical stimulus can have dramatic effect on cell behavior. Among these carbon-aerogels decorated with biocompatible polymers were suggested as future materials for tissue engineering. However, high reaction temperatures required for the synthesis of the aerogels tend to impair the stability of the polymeric networks. Herein, we report a synthetic route towards carbon-aerogel scaffolds decorated with biocompatible ceramic nanoparticles of tricalcium phosphate. The composites can be prepared at temperature as high as 1100 °C without significant effect on the morphology of the composite which is comparable with the original aerogel framework. Although the conductivity of the composites tends to decrease with the increasing ceramic content the measured conductivity values are similar to those previously reported on polymer-functionalized carbonaerogels. the cell culture study revealed that the developed constructs support cell proliferation and provide good cell attachment suggesting them as potentially good candidates for tissue-engineering applications.

Advances in tailoring the water content in porous carbon aerogels using RT-pulsed fluorination

“…These conductivity values agree with those obtained by Asset et al [55] and are an equivalent of a pristine CA with a density around 0.07 g cm -3 [86]. However, even if the conductivity is decreased through fluorination, this value is still acceptable owing to carbon nanostructures application which requires a high level of conductivity on the range of 20-100 S m −1 while retaining the structural integrity [87]. Pulsed fluorination offers an advantage over the direct method in terms of i) elaborating a homogeneous distribution of fluorine at the carbon surface, ii) tailoring the water content of the CA and results in more hydrophobic materials that enables to limit water retention.…”

H2S-Sensing Studies Using Interdigitated Electrode with Spin-Coated Carbon Aerogel-Polyaniline Composites

“…For the PANI-CA composite, the same peaks were observed with a slight shift in G-band, implying the formation of a new covalent bond. Moreover, the intensity ratio between D and G band (I D /I G ) was 0.849 and 0.845 for CA and PANI-CA composites, respectively, indicating a good similarity between the two products [ 43 , 44 ].…”

Emerging Trends in Nanotechnology: Aerogel-Based Materials for Biomedical Applications

“…These properties endow aerogels with a rapid response signal, high selectivity, and super sensitivity for sensing a variety of biomedical targets. The synthesis of carbon-aerogel scaffolds containing biocompatible ceramic nanoparticles of tricalcium phosphate has been disclosed by Tevlek et al Due to their high gelatine content and highly porous structure, the materials exhibited good biocompatibility and supported cell growth for 14 days [ 91 ].…”

“…The performance of the developed aerogel was tested as biocompatible material since there were non-cytotoxicity and safety results from the studies [ 123 ]. This also same as aerogel derived from tricalcium phosphate (-TCP) indicated it had no in-vitro cytotoxicity activities [ 91 ]. In addition, a stable magnetite hydrosol was fabricated by modifying the sol–gel transition by varying concentrations and drying conditions to achieve stable functional properties of the aerogel.…”