Alignment of luminescent liquid crystalline molecules on modified PEDOT:PSS substrate

Electroluminescence From Oled Based on DCM Derivative With Chemical Formula C25h21n3o3

“…4, the PL spectrum of the DCM-18 thin film, measured at room temperature, is exhibit three overlapping bands with the maxima at 570 nm, 635 nm and 665 nm in the visible region. The obtained spectrum is similar to the PL spectra of DCM and DCM derivatives films considered in our previous works [12][13][14]. Explanation of the nature of PL bands of DCM molecules in various solvents is very well described in [11].…”

“…According to [11], the broad PL band of DCM molecules in solvents can be formed by emission from the locally excited state ( max l = 560-580 nm), the state of intramolecular charge transfer emitting state ( max l = 610 nm) and the twisted intramolecular charge transfer state ( max l = 630 nm). Note that the PL bands of DCM films, compared with the PL bands of DCM solutions, are shifted to the red region of the light wavelength spectrum due to a stronger intermolecular interaction [13,15,16]. The problem with weak photoluminescence of pure evaporated DCM-18 thin film has been overcome by preparing guest-host system.…”

Advanced Functional Luminescent Metallomesogens: The Key Role of the Metal Center

“…These limitations are mainly due to the use of polarizers and color filters, which transform a significant part of the incident light into thermal energy . Thus, one of the best ways to overcome this disadvantage could be the use of luminescent mesogens. − Besides developing luminescent mesogenic materials, luminescent metallomesogens offer an exciting opportunity; these compounds can also combine the typical properties of the metal ions (dielectric properties, magnetism, carrier mobility, etc. ), with the liquid crystal and luminescence properties induced by the supramolecular ordering of the mesophases. − …”