Synthesis and characterization of green-light emitting (pbi-Cl)2Ir(acac) complex

Khotele, Neha; Kalyani, N. Thejo; Dhoble, S.J.

doi:10.1016/j.jpcs.2019.02.011

Cited by 7 publications

(1 citation statement)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…18. 20,26,29,[38][39][40][41][42][43] The best linear fit of the data points, which is a straight line little more inclined than the actual one has been plotted. The results of the optical measurements and photo-physical properties of the synthesized (Cl-H-DPQ) 2 Ir(acac) complex are summarized in Table II.…”

Section: Stokesmentioning

confidence: 99%

Appraisal of Structural, Thermal, and Optical Properties of Novel Bluish-Violet Light-Emitting Cyclometallated Iridium (III) (Cl-H-DPQ)2Ir(acac) Complex for OLED Devices

Khotele

Kalyani

Pode

et al. 2021

ECS J. Solid State Sci. Technol.

Self Cite

View full text Add to dashboard Cite

Synthesis and evaluation of structural, thermal, and optical properties of a novel bluish-violet light-emitting cyclometallated Iridium (Ir3+) complex [(Cl-H-DPQ)2Ir(acac)] containing 4-(6-chloro-4-phenylquinolin-2-yl) phenol as main ligand and acetyl acetone (acac) as ancillary ligand by employing Friedlander reaction at 105 °C is reported. X-ray diffraction of the complex reveals its crystalline nature and scanning electron microscopy illustrates polygonal morphology within the nm range. FTIR spectra confirms the structure formation and molecular bonding of the synthesized complex. DTA/TGA curves reveal its thermal stability to about 252 °C demonstrating its potential at elevated temperatures. UV–vis optical absorption and photoluminescence spectra were carried out in solid state form and in various organic solvents ranging from basic to acidic media. This facilitated estimation of the energy band gap and Stokes shift in various organic solvents. When excited at 350 nm light, the complex emits prominent bluish-violet light peaking at 468 nm in the solid-state form. However, it shows a bathochromic shift in acidic media and a hypsochromic shift in basic media. CIE chromaticity coordinates (x, y) of (Cl-H-DPQ)2Ir(acac) complex in solid state form was found to be (0.2631, 0.2358), and in acetic acid and formic acid they were found to be (0.325, 0.159) and (0.402, 0.198), respectively, while in chloroform and dichloromethane they were found to be (0.1616, 0.043) and (0.1756, 0.062), respectively. The Stokes shift was found to be in the range of 6480–15,719 cm−1 in various acidic and basic solvents. The solvent sensitivity to chromophore was probed by a Lippert–Mataga plot. These results reflect the potential of the (Cl-H-DPQ)2Ir(acac) complex as a bluish-violet light-emitting material for organic light-emitting diodes, displays, and solid-state lighting.

show abstract