Solution and Solid-State Structure of cis-Dichloro-(N,N′-dimethylethylenediamine)platinum(II)

Christensen, Elijah Mae; Oh, SaeRam; Oliver, Devin; Janzen, Daron E.; Drew, Steven M.

doi:10.1007/s10870-014-0506-6

Cited by 4 publications

(6 citation statements)

References 20 publications

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“…NMR spectra were recorded on 300 or 400 MHz instruments. X-ray crystallographic data were obtained on a benchtop single-crystal diffractometer using methods described previously . Infrared absorption spectra were recorded on a Bruker Tensor 27 FTIR using a single reflection ATR accessory with a germanium crystal.…”

Section: Methodsmentioning

confidence: 99%

“…X-ray crystallographic data were obtained on a benchtop single-crystal diffractometer using methods described previously. 20 Infrared absorption spectra were recorded on a Bruker Tensor 27 FTIR using a single reflection ATR accessory with a germanium crystal. Thermogravimetric analysis (TGA) experiments were performed on a TA Instruments Q50 analyzer under a nitrogen atmosphere and the samples were heated at a rate of 10 °C/min.…”

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confidence: 99%

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ProDOT-Assisted Isomerically Pure Indophenines

et al. 2019

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Section: Methodsmentioning

confidence: 99%

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confidence: 99%

ProDOT-Assisted Isomerically Pure Indophenines

et al. 2019

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“…The input files were generated with GaussView. X-ray crystallographic data were obtained on a benchtop single-crystal diffractometer using methods described previously …”

Section: Methodsmentioning

confidence: 99%

“…X-ray crystallographic data were obtained on a benchtop single-crystal diffractometer using methods described previously. 17 5-(4-(Diethylamino)phenyl)thiophene-2-carbaldehyde (3). A N 2 -purged Schlenk flask containing 4-(diethylamino)phenylboronic acid (1.21 g, 6.28 mmol), 5bromothiophene-2-carbaldehyde (1.0 g, 5.23 mmol), Pd-(PPh 3 ) 4 (0.30 g, 0.26 mmol), K 2 CO 3 (2.16 g, 15.69 mmol), and THF/water 30 mL (1:1) was equipped with a magnetic stir bar and a reflux condenser and heated at 90 °C for 24 h. The reaction mixture was then poured into water and extracted with CH 2 Cl 2 (4 × 150 mL).…”

Section: ■ Methodsmentioning

confidence: 99%

Excited State Electron Transfer from Donor−π System–Acceptor Dyes to ZnO Nanocrystals

et al. 2020

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Monodispered ZnO nanocrystals (NCs) were found to quench the fluorescence of two donor−π system−acceptor (D−π−A) dyes; (E)-2-cyano-3-[5- [4-(diethylamino)phenyl]thiophen-2-yl]-2-propenoic acid, 1, and its furan analogue, 2. Parameters based on single crystal X-ray crystallography and DFT calculations confirmed planar structures for both dyes and delocalization of the donor nitrogen electrons into the πsystem. Both dyes exhibited a quasi-reversible one-electron oxidation with E o values of 0.39 and 0.35 V for 1 and 2, respectively, versus the ferrocene/ferrocenium redox couple, and spectroelectrochemical measurements revealed the absorption spectra of the oxidized products. In stark contrast to earlier reports of related dyes that did not bear a strong donor substituent, the ZnO nanocrystal fluorescence quenching efficiency was nearly quantitative. Adsorption isotherms revealed equilibrium binding constants 2.5(0.5) × 10 5 and 8(1) × 10 5 M −1 for 1 and 2, respectively, and large values for the maximum number of dyes per nanocrystal. Ultrafast fast pump−probe measurements of 1 and 2 in CH 2 Cl 2 revealed formation of singlet excited states that decayed with lifetimes of 1660(30) and 1600(100) ps, respectively. Addition of an equimolar amount of ZnO NCs caused the singlet excited state of each dye to disappear with concurrent formation of the spectral signatures for the corresponding oxidized products, thus allowing the assignment of the process to an excited state electron transfer to the ZnO NCs. Electron transfer lifetimes for 1 ranged from 14.8(4) to 18.2(6) ps as the ZnO NC diameter decreased from 5.0 to 3.2 nm, while for 2 the lifetimes ranged from 11.1(3) to 9.5(3) ps for a similar change in ZnO NC diameters. The weak dependence of the excited state electron transfer lifetimes on the diameter of the NCs is consistent with a reaction dominated by changes in their sizedependent density of states.

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“…Mass spectra were obtained on an EI mass spectrometer using a direct insertion probe. X-ray crystallographic data were obtained on a benchtop single-crystal diffractometer using methods described previously …”

Section: Methodsmentioning

confidence: 99%