Choi, Jonghoon Kim, Kyobum Han, Hyung-seop Hwang, Mintai P. Lee, Kwan Hyi 2024-01-20T10:33:36Z 2024-01-20T10:33:36Z 2021-09-04 2014-01-20 0253-2964 https://pubs.kist.re.kr/handle/201004/127216 Herein, we report on the preparation of red fluorescent Si nanoparticles stabilized with styrene. Nano-sized Si particles emit fluorescence under UV excitation, which could be used to open up new applications in the fields of optics and semi-conductor research. Unfortunately, conventional methods for the preparation of red fluorescent Si nanoparticles suffer from the lack of a fully-established standard synthesis protocol. A common initial approach during the preparation of semi-conductors is the etching of crystalline Si wafers in a HF/ethanol/H2O bath, which provides a uniformly-etched surface of nanopores amenable for further nano-sized modifications via tuning of various parameters. Subsequent sonication of the etched surface crumbles the pores on the wafer, resulting in the dispersion of particles into the solution. In this study, we use styrene to occupy these platforms to stabilize the surface. We determine that the liberated silicon particles in ethanol solution interact with styrene, resulting in the substitution of Si-H bonds with those of Si-C as determined via UV photocatalysis. The synthesized styrene-coated Si nanoparticles exhibit a stable, bright, red fluorescence under excitation with a 365 nm UV light, and yield approximately 100 mg per wafer with a synthesis time of 2 h. We believe this protocol could be further expanded as a cost-effective and high-throughput standard method in the preparation of red fluorescent Si nanoparticles. English WILEY-V C H VERLAG GMBH Electrochemical Synthesis of Red Fluorescent Silicon Nanoparticles Article 10.5012/bkcs.2014.35.1.35 1 BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.35, no.1, pp.35 - 38 BULLETIN OF THE KOREAN CHEMICAL SOCIETY 35 1 35 38 scie scopus kci ART001846027 000330682100005 2-s2.0-84892940015 Chemistry, Multidisciplinary Chemistry Article Silicon Nanoparticles Styrene Surface functionalization Fluorescence