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10 protocols using dioctylamine

1

Synthesis of Nanocrystalline Materials

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Indium acetate (InOAc, 99.99%), OA (≥99%), dioctylamine (DOA, ≥97%), 1‐octadecene (ODE, 90%), ME (≥99%), and InCl3 (≥98%) were purchased from Sigma‐Aldrich Chemical Co. Trimethylsilylarsine ((TMSi)3As, 99%) was purchased from JSI Silicone. All solvents used in the experiments (hexane, butanol, and ethyl alcohol) were purchased from Sigma‐Aldrich Chemical Co.
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2

Synthesis of Colloidal Semiconductor Nanocrystals

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Oleylamine (OAm, 80–90%), 1-octadecene (ODE, 90%), diphenylphosphine (DPP, 98%), sulfur (S, 99.999%), tris(trimethylsilyl) phosphine (TMS3P, 98%), cadmium oxide (CdO, 99.95%) and hexanes (99%) were purchased from Fisher Scientific. Indium (III) acetate [In(Ac)3, 99.99%], oleic acid (OA, 90%), n-trioctylphosphine (TOP, 97%), selenium pellets (Se, 99.99%), zinc acetate [Zn(Ac)2, 99.0%], dioctylamine (98%), and ethanol (99.8%) were purchased from Sigma-Aldrich. ODE was heated to 120°C under vacuum for several hours prior to use and stored in an argon glovebox. All other chemicals were used directly without further purification. Quartz glass cuvettes were purchased from Starna Cells Inc. All air-sensitive materials were stored and handled in a glovebox under argon.
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3

Synthesis of Colloidal Quantum Dots

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Oleylamine (OAm, technical grade, 70%), 1-octadecene (ODE, 90%), sulfur (S, 99.999%), and hexanes (99%) were purchased from Fisher Scientific. Tris(trimethylsilyl) phosphine ((TMS)3P, 98%) was purchased from Strem Chemical, Inc. Chloroform was purchased from J.T.Baker. Indium (III) acetate (In(Ac)3, 99.99%), oleic acid (OA, 90%), n-trioctylphosphine (TOP, 97%), selenium pellets (Se, 99.99%), zinc acetate (Zn(Ac)2, 99.0%), indium (III) acetylacetonate (In(Acac)3, 99.99%), trioctylphosphine oxide (TOPO, 99%), myristic acid (HMy, 99%), ethanol (99.8%), dioctylamine (97%), and InP/ZnS QDs (λem=670 nm) in toluene were purchased from Sigma-Aldrich. ODE was heated to 120 °C under vacuum for several hours with multiple argon backfill and evacuation cycles to ensure complete removal of air and water and stored in an argon glovebox prior to use. CdSe/ZnS QDs were purchased from NNCrystal US Corporation. All other chemicals were used directly without further purification. Quartz cuvettes were purchased from Starna Cells Inc. All air-sensitive materials were stored and handled in an argon glovebox.
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4

Synthesis of Colloidal Nanocrystals

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Indium(III) chloride (InCl3, 99.999%,
Sigma-Aldrich), zinc(II) chloride (ZnCl2, 99.999%, Sigma-Aldrich),
tris(dimethylamino)arsine (amino-As, 99%, Strem), alane N,N-dimethylethylamine complex solution
(DMEA-AlH3, 0.5 M solution in toluene, Sigma-Aldrich),
triethyloxonium tetrafluoroborate (Et3OBF4,
97%, Sigma-Aldrich), oleylamine (OA, 98%, Sigma-Aldrich), trioctylamine
(TOA, 98%, Sigma-Aldrich), dioctylamine (DOA, 97%, Sigma-Aldrich),
tri-n-octylphosphine (TOP, 97%, Strem), oleic acid
(90%, Sigma-Aldrich), octadecylphosphonic acid (>99%, PCI
synthesis),
toluene (anhydrous, 99.8%, Sigma-Aldrich), ethanol (anhydrous, 99.8%,
Sigma-Aldrich), toluene-d8 (anhydrous,
99.6%, Sigma-Aldrich), ethyl acetate (anhydrous, 99.8%, Sigma-Aldrich),
hexane (anhydrous, 95%, Sigma-Aldrich), and N,N-dimethylformamide (DMF, anhydrous, 99.8%, Sigma-Aldrich)
were used without further purification.
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5

Synthesis of Colloidal Nanocrystals

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Indium acetate (In(OAc), 99.99%, Sigma‐Aldrich), oleic acid (OA, 90%), hexane (95% anhydrous, Sigma‐Aldrich), 2‐methyltetrahydrofuran (2‐meTHF, 99.0% anhydrous, Sigma‐Aldrich), 2‐methylanisole (2‐MA, 99.0%, Sigma‐Aldrich), toluene (99.5%, Sigma‐Aldrich), 1,2‐ethanedithiol (EDT, 99.0%, Sigma‐Aldrich), ethanethiol (ET, 97%, Sigma‐Aldrich), chlorobenzene (CB, 99.8% anhydrous, Sigma‐Aldrich), acetonitrile (ACN, 99.5%, Sigma‐Aldrich), ethyl acetate (EA, 99.5%, Sigma‐Aldrich), chloroform (CF, 99.8%, Sigma‐Aldrich), butylamine (BTA, 99.5%, Sigma‐Aldrich), benzoic acid (BA, 99.5%, Sigma‐Aldrich), nitrosyl tetrafluoroborate (NOBF4, 95%, Sigma‐Aldrich), and dioctylamine (DOA, 97%, Sigma‐Aldrich) were purchased and used as received. The compounds 1‐octadecene (ODE, 90%, Alfa Aesar), octane (98%, Alfa Aesar), and 3‐mercaptopropionic acid (MPA, 99%, Alfa Aesar) were purchased and used without further purification. 1‐butanol (BuOH, 99.8%) was purchased from Junsei chemical, ME (99%) was purchased from Daejung, and Tris(trimethylsilyl)arsine ((TMSi)3As, 99%) was purchased from JSI Silicone and was distilled before use.
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6

Rare Earth Elements Protocol

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All reagents were of analytical grade unless otherwise noted. Stock solutions (1.000 g L−1) of 16 REEs (La, Ce, Pr, Nd, Sm, Eu, Gd, Td, Dy, Ho, Er, Tm, Yb, Lu, Y and Sc) were prepared by dissolving appropriate amounts of the corresponding Specpure oxides in dilute HNO3. Working solutions were prepared daily by appropriately diluting the stock solutions. NaCl, Na2SO4, FeCl3, AlCl3, CuSO4, ZnCl2, NaAc, NaHCO3, NH4NO3, HNO3, H2O2, NH3·H2O, CH2Cl2, ethanol, carbamide, ethylene glycol, acetic anhydride, oxalyl chloride and tetraethoxysilane (TEOS) were bought from Sinopharm Chemical Reagent Co., Ltd, China. Diglycolic acid, dioctylamine, cetyltrimethylammonium bromide (CTAB), and aminopropyltriethoxysilane (APTES) were purchased from Sigma-Aldrich Chemical Company. High-purity water (18.2 MΩ cm) obtained from a Milli-Q Element system (Millipore, Molsheim, France) was used directly throughout this study. Plastic and glass containers and all other laboratory materials that could come into contact with the samples and standards were stored in 10% (v/v) nitric acid for 24 h and rinsed with high-purity water.
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7

Colloidal Lead Halide Perovskite Synthesis

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Lead(II) acetate trihydrate (Pb(CH3COO)2·3H2O, 99.99%), cesium carbonate
(Cs2CO3, 99%), benzoyl bromide (97%), 1-octadecene
(ODE, 90%), anhydrous ethyl acetate (99.8%), anhydrous acetone, toluene
(≥99.7%), deuterated toluene (toluene-d8, 99.8 at. % D), deuterated dimethyl sulfoxide (d-DMSO, 99.9
atom. % D), oleic acid (OA, 90%), didodecyldimethylammonium
bromide (DDABr, 98%), 1-octylamine (99%), dioctylamine (98%), trioctylamine
(98%), 1-octanal (99%), dioctyl sulfide (96%), 1-octanoic acid (%),
10-undecenoic acid (98%), diisooctylphosphinic acid (90%), 1-octylphosphonic
acid (99%), 1-octanol (99%), and 1-octanethiol (98.5%) were purchased
from Sigma. Didodecylamine (DDA, 97%) and 9-heptadecanone (98%) were
purchased from TCI Chemicals. Trioctylphosphine (TOP, 97%) and Trioctylphosphine
oxide (99%, TOPO) were purchased from Strem Chemicals. All chemicals
were used without further purification.
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8

Synthesis of Indium-based Nanostructures

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Indium(III) acetate (InOAc,
UNIAM, 99.99%), oleic acid (OA, UNIAM, 99%), 1-octadecene (ODE, UNIAM,
99.99%), dioctylamine (DOA, Aldrich, 97%), tris(trimethylsilyl)arsine
((TMS)3As, JSI silicon, 99%), trioctylphosphine (TOP, UNIAM),
and n-hexadecane (Alfa Aesar, 99%) were used as purchased
without any further purification. All solvents, including anhydrous
methanol, butanol, ethanol, hexane, toluene, and tetrachlorethylene
(TCE), were purchased from Sigma-Aldrich Chemical Co. Bio Beads S-X1
GPC medium was purchased from Bio-Rad Laboratories, Inc. Deuterated
toluene was purchased from DEUTERO.
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9

Synthesis of Indium Nanocrystals

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Indium(III) acetate (InOAc, UNIAM, 99.999%), oleic acid (OA, UNIAM, ≥99%), 1-octadecene (ODE, UNIAM, 99.999%), and dioctylamine (DOA, Aldrich, ≥97%) were used as purchased without any further purification. Tris(trimethylsilyl)arsine ((TMS)3As, JSI silicon, 99%) was distilled before use. All solvents, including hexane, butanol, and tetrachlorethylene (TCE), were purchased from Sigma-Aldrich Chemical Company.
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10

Synthesis of Indium-based Nanocrystals

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Indium acetate [In(OAc)3, 99.99%], oleic acid (OA, technical grade, 90%), dioctylamine (DOA, Aldrich, ≥97%), 1-octadecene (ODE, 90%), N, N-dimethylformamide (DMF, 99.8% anhydrous), octane (99% anhydrous), 1-butanol (BuOH, 99.8% anhydrous), toluene (Tol, 99.8% anhydrous), ammonium acetate (AA, 99.999%), 2-MCE (99%), MTA (98%) were purchased from Sigma-Aldrich. Tris(trimethylsilyl)arsine [(TMSi)3As] was purchased from Dockweiler Chemicals Inc. Indium (III) bromide (InBr3, 99.999% anhydrous) was purchased from Strem Chemicals, Inc. All the mentioned chemicals were used as received.
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