Seeded-Growth of Silica Rods from Silica-Coated Particles

Douglas R. Hayden*, Chris L. Kennedy, Krassimir P. Velikov, Alfons Van Blaaderen, Arnout Imhof

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review


Seeded growth of silica rods from colloidal particles has emerged as a facile method to develop novel complex particle structures with hybrid compositions and asymmetrical shapes. However, this seeded-growth technique has been so far limited to colloidal particles of only a few materials. Here, we first develop a general synthesis for the seeded-growth of silica rods from silica particles. We then demonstrate the growth of silica rods from silica-coated particles with three different cores which highlight the generality of this synthesis: fluorescently labeled organo-silica (fluorescein), metallic (Ag), and organic (PS latex). We also demonstrate the assembly of these particles into supraparticles. This general synthesis method can be extended to the growth of silica rods from any colloidal particle which can be coated with silica.

Original languageEnglish
Pages (from-to)14913-14919
Number of pages7
Issue number46
Publication statusPublished - 19 Nov 2019


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