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Real time monitoring of the drug release of rhodamine B on graphene oxide
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.ORCID iD: 0000-0003-2873-7875
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.ORCID iD: 0000-0001-9137-3440
N China Elect Power Univ, Dept Math & Phys, Baoding 071003, Peoples R China.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.ORCID iD: 0000-0001-7329-3359
2011 (English)In: Carbon, ISSN 0008-6223, E-ISSN 1873-3891, Vol. 49, no 4, 1126-1132 p.Article in journal (Refereed) Published
Abstract [en]

A real time method for monitoring the drug load and release on graphene oxide (GO) in a cuvette is reported using rhodamine B (RB) as a model for a drug. The mechanisms of the release of RB at different pH were investigated, by monitoring the time dependency of the accumulative drug release. In vitro real time experimental results indicated that RB could be loaded on GO with a capacity of 0.5 mg/mg. The drug release of RB was pH sensitive as observed at pH 7.4 and pH 4.5 PBS solutions. The higher pH values lead to weaker hydrophobic force and hydrogen bonds, and thus higher release rate. The ionic strength also influenced the release of RB, as shown from the different release rates between PBS solutions and double distilled water. These results indicated a case II transport process at pH 7.4 and an anomalous diffusion process at pH 4.5 and in water. The method described here allows real time detection of the drug release rate, in contrast to common dialysis analysis. This method also points to other real time detections in biomedical investigations.

Place, publisher, year, edition, pages
2011. Vol. 49, no 4, 1126-1132 p.
Keyword [en]
DELIVERY; NANOPARTICLES; CANCER; SYSTEMS; CELLS; FILMS
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:miun:diva-12923DOI: 10.1016/j.carbon.2010.11.026ISI: 000287055200010Scopus ID: 2-s2.0-78751591216OAI: oai:DiVA.org:miun-12923DiVA: diva2:383031
Available from: 2011-01-03 Created: 2011-01-03 Last updated: 2013-08-23Bibliographically approved

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