See all entries for this property (2 total)
Crystal system: monoclinic
| a: | 64.191 (±0.006) Å |
| b: | 6.0936 (±0.0005) Å |
| c: | 12.2111 (±0.0009) Å |
| α: | 90° |
| β: | 97.773 (±0.004)° |
| γ: | 90° |
Starting materials: As-synthesized 4Tm, PbI2, anhydrous dimethyl formamide (DMF) ((CH3)2NCH), anhydrous chlorobenzene (CB) (C6H5Cl), Si/SiO2
Product: orange plate-like crystals
Description: Solution and thin film growth experiments were prepared and executed inside of a nitrogen-filled glove box with oxygen and water levels less than 1 ppm. Inside a 4 mL vial, as-synthesized 4Tm (10.6 mg, 20 µmol) and PbI2(4.6 mg, 10 µmol) were dissolved in a mixture of DMF (1 mL) and CB (1 mL). To obtain single crystals, the solution in DMF was diffused with chloroform and chlorobenzene vapor. This resulted in thin orange-red plates.
Method: Single Crystal X-Ray Diffraction
Description: Data were collected using a Bruker AXS D8 Quest CMOS diffractometer, an I-mu-S microsource X-ray tube with Cu Kα radiation (λ = 1.54178 Å), Goebel mirror, and a Photon2 CMOS area detector. Data was collected and analyzed at 150 K. Files were scaled and corrected using APEX3.
Starting materials: As-synthesized 4Tm, PbI2, anhydrous dimethyl formamide (DMF) ((CH3)2NCH), anhydrous chlorobenzene (CB) (C6H5Cl), Si/SiO2
Product: orange crystals
Description: Solution and thin film growth experiments were prepared and executed inside of a nitrogen-filled glove box with oxygen and water levels less than 1 ppm. Inside a 4 mL vial, as-synthesized 4Tm (10.6 mg, 20 µmol) and PbI2(4.6 mg, 10 µmol) were dissolved in a mixture of DMF (1 mL) and CB (1 mL). Afterward, the solution was diluted 60 times with acetonitrile/chlorobenzene (1:2:5 volume ratio). The solution was diluted 5 more times with either CB or CB/acetonitrile (3:1 volume ratio). Next, the Si/SiO2 substrates were then cleaned via ultrasonication in isopropanol, water, acetone, and isopropanol again. Substrates were dried by a nitrogen gun, transported into the glove box, and preheated to 80º C. The prepared, diluted solution was then dropped onto the Si/SiO2 substrate, 10 mL at a time, and dried at 80ºC. Thin sheets of (4Tm)2PbI4 grew spontaneously within 10 minutes. To obtain single crystals, the solution in DMF was diffused with chloroform and chlorobenzene vapor. This resulted in thin orange-red plates.
Method: Absorption spectra was obtained by using an Agilent UV-Vis-NIR Cary-5000 spectrometer.
Description: Absorption correction was performed with Multi-scan SADABS 2016/2: Krause, L., Herbst-Irmer, R., Sheldrick G.M. & Stalke D., J. Appl. Cryst. 48 (2015) 3-10.
Crystal system: monoclinic
| Band gap (band edge difference), eV |
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Starting materials: As-synthesized 4Tm, PbI2, anhydrous dimethyl formamide (DMF) ((CH3)2NCH), anhydrous chlorobenzene (CB) (C6H5Cl), Si/SiO2 wafer
Product: Thin film
Description: The entire procedure was performed inside a nitrogen-filled glove box. 4Tm (53.0 mg, 100 μmol) and PbI2 (23.0 mg, 50 μmol) were dissolved in 0.25 mL of anhydrous DMF at 70 °C. The cooled DMF solution was spin-coated at 2000 rpm for 60 s. The film was annealed at 200 °C on a hot plate for 10 min.
Method: Ultraviolet photoelectron spectroscopy (UPS) + Cyclic voltametry (CV)
Description: UPS was recorded using Kratos Axis Ultra DLD spectrometer with He I radiation (21.2 eV) at pass energy (PE) of 5 eV. CV was recorded using a CHI660 electrochemical analyzer.
Comment: See the publication for details on the measurements.