Synthesis of Styryl-Terminated Silicon Quantum Dots: Reconsidering the Use of Methanol

The Large-Scale Synthesis of Vinyl-Functionalized Silicon Quantum Dot and Its Application in Miniemulsion Polymerization

“…18 mL (36 mmol) of LiAlH 4 solution (2 M in tetrahydrofuran, Aldrich) was then added dropwise and the mixture was further stirred for 2 hours to complete reduction of chlorosilane into silicon. The remaining LiAlH 4 was quenched with 10 g (74 mmol) of CuCl 2 (Aldrich), which was found to reduce uninvited oxidation of Si QDs as compared with methanol [19]. Next, the resultant mixture was dried using a rotary evaporator under reduced pressure.…”

“…Since surface Si-H bonds are easily oxidized when exposed to air atmosphere, the hydrogenterminated Si QDs are then reacted with various organic molecules with an end C=C double bond functional group to perform either oil-or water-soluble Si QDs [1]. Although this solution-based synthetic protocol provides a versatile tool for designing the surfaces of Si QDs toward targeted applications [4,8,19], only small amount of Si QDs could be obtained [20] with wasted Pt catalyst and TOAB. Wang et al [21] and Cheng et al [22] replaced TOAB with bipolar alkyl trichlorosilane, which self-assembled with SiCl 4 in a micellar fashion followed by a LiAlH 4 reduction step to perform alkyl-terminated Si QDs with relatively oxidized surfaces.…”

Tuning the Emission Color of Hydrothermally Synthesized Carbon Quantum Dots by Precursor Engineering

“…When compared with mature nontoxic QDs, e.g. InP [3], Si [4][5][6][7] or visible luminescence ZnO particle [8], CQDs have advantages of large chemical abundance and cost-effective synthesis but the information relating to chemical structures and photoluminescence origin of CQDs is lag behind. Among a vast number of reported CQDs, CQDs derived from CA and EDA are probably the CQDs that have been described in most detail [9][10][11].…”

Tailoring the Charge Transport Properties of Printable Si‐NCs By Conjugated Organic Ligands

“…When turning on the Si‐NCs, the post synthesis doping has instead received very little attention although the tunability of their work function (W f ) by grafting organic molecules on silicon has been already predicted by periodic density functional theory . Styryl moieties were previously grafted on Si‐NCs by thermal or photochemical activation as well as by catalysis with chloroplatinic acid (H 2 PtCl 6 ) …”