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2 protocols using 2 chloroacetamide

1

Synthesis of Benzyl Substituted Heterocycles

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All solvents were purified before use. N-bromosuccinimide, thiourea, 2-methylbenzyl chloride, 3-fluorobenzyl chloride, 2-chlorobenzyl chloride, 2,4-dichlorobenzyl chloride, 3,4-dichlorobenzyl chloride, 4-bromobenzyl chloride, 2-chloroacetamide, and ethyl chloroacetate were purchased from Acros Organics and used without purification. Compounds 2, 3, 4b, and 4h were prepared using methods described previously [10 ]. The reactions were monitored by thin-layer chromatography (TLC) using Fluka silica gel (60 F 254) plates (0.25 mm). Visualization was made with UV light. The melting points of the synthesized compounds were taken on a melting point tube. Infrared spectra were recorded on a Bruker Tensor 37 spectrometer (Germany). The 1H-NMR spectra were recorded on a Bruker WP 250 SY spectrometer (250.13 MHz) (Germany). Chemical shifts are reported relative to chloroform (δ=7.25 ppm) for 1H-NMR. The mass spectra were recorded on an Agilent LC/MSD SL 1100 instrument (USA).
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2

Perovskite Solar Cell Fabrication

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The 2.5 × 2.5 cm2 fluorine-doped
tin oxide glass slides (FTO OPV-FTO22-15,
sheet resistance of 14 Ω·sq–1) were purchased
from OPVTech. Titanium isopropoxide (Ti[OCH(CH3)2]4, 97%), hydrochloric acid (HCl, 37%), 2-propanol (for
HPLC, 99.9%), chlorobenzene (CB, anhydrous 99.8%), acetonitrile (ACN,
99.8%), 4-tert-butylpyridine (TBP, 98.0%), and cesium
iodide (CsI, 99.999%) were purchased from Sigma Aldrich. Lead iodide
(PbI2, 99.99%) was purchased from Tokyo Chemical Industry
(TCI). PbBr2 (99.999%), methyl ammonium bromide (MABr,
>99.5%), and formamidinium iodide (FAI, >99.5%) were purchased
from
Lumtec. Bis(trifluoromethane)sulfonimide lithium salt (Li-TFSI, 99.0%), N,N-dimethylformamide (DMF, anhydrous >99.5%),
2-bromoacetamide (98%), and 2-chloroacetamide (98%) were purchased
from Acros. Dimethly sulfoxide (DMSO, >99.7%), 2-iodoacetamide
(98%),
and dimethyl sulfoxide-d6 (DMSO-d6) were purchased from Merck. Spiro-OMeTAD was
purchased from Borun New Material Technology. All chemical substances
obtained commercially were used as purchased without further purification.
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