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These peptides form a nanofibrillar network structure upon gelation in aqueous medium at basic pH values (pH\u200511.0\u201313.0), and the fabrication of CdS nanoparticles on the gel nanofiber confers the luminescent property to these gels. Atomic force microscopy, field\u2010emission scanning electron microscopy, and high\u2010resolution transmission electron microscopy clearly reveal the presence of CdS nanoparticles in a well\u2010defined array on the gel nanofibers. This is a convenient way to make organic nanofiber\u2013inorganic nanoparticle hybrid nanocomposite systems. The size of the CdS nanoparticles remains almost same before and after deposition on the gel nanofiber. Photoluminescence (PL) measurement of the CdS nanoparticles upon deposition on the gel nanofibers shows a significant blue shift in the emission spectrum of the nanoparticles, and there is a considerable change in the PL gap energy of the CdS nanoparticles after immobilization on different gel nanofibrils. This finding suggests that the optoelectronic properties of CdS nanoparticles can be tuned upon deposition on gel nanofibers without changing the size of the nanoparticles.<\/jats:p>","DOI":"10.1002\/chem.200900149","type":"journal-article","created":{"date-parts":[[2009,6,19]],"date-time":"2009-06-19T10:51:12Z","timestamp":1245408672000},"page":"6902-6909","source":"Crossref","is-referenced-by-count":99,"title":["Fabrication of Luminescent CdS Nanoparticles on Short\u2010Peptide\u2010Based Hydrogel Nanofibers: Tuning of Optoelectronic 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