4316-57-8Relevant articles and documents
Near-Infrared Boron Difluoride Formazanate Dyes
Buguis, Francis L.,Maar, Ryan R.,Staroverov, Viktor N.,Gilroy, Joe B.
supporting information, p. 2854 - 2860 (2021/01/20)
Near-infrared (NIR) dyes are sought after for their utility in light harvesting, bioimaging, and light-mediated therapies. Since long-wavelength photoluminescence typically involves extensive π-conjugated systems of double bonds and aromatic rings, it is often assumed that NIR dyes have to be large molecules that require complex syntheses. We challenge this assumption by demonstrating that facile incorporation of tertiary amine groups into readily available 3-cyanoformazans affords efficient production of relatively simple NIR-active BF2 formazanate dyes (λabs=691–760 nm, λPL=834–904 nm in toluene). Cyclic voltammetry experiments on these compounds reveal multiple reversible redox waves linked to the interplay between the tertiary amine and BF2 formazanate moieties. Density-functional calculations indicate that the NIR electronic transitions in BF2 formazanates are of π→π*-type, but do not always involve strong charge transfer.
Emergence of Aggregation Induced Emission (AIE), Room-Temperature Phosphorescence (RTP), and Multistimuli Response from a Single Organic Luminogen by Directed Structural Modification
Chatterjee, Abhijit,Chatterjee, Joy,Sappati, Subrahmanyam,Sheikh, Tariq,Umesh, Rintu M.,Ambhore, Madan D.,Lahiri, Mayurika,Hazra, Partha
, p. 12832 - 12846 (2021/11/24)
Multifunctional organic luminogens exhibiting simultaneous aggregation induced emission (AIE), room-temperature phosphorescence (RTP), and mechanochromism have recently attracted considerable attention owing to their potential applications in optoelectronics and bioimaging. However, a comprehensive correlation among these three distinguished properties is yet to be unveiled, which will help to decipher defined methodologies to design future generation multifunctional organic materials. Herein, we have demonstrated a route to obtain a multifunctional organic luminogen, starting from an ACQphore (TPANDI) by simple structural engineering. We have shown that a slight reduction in length of the planar acceptor moieties can effectively inhibit the undesirable π-πstacking interaction between molecules in the condensed state and thereby cause an ACQ to AIE type transformation from TPANDI to TPANMI and TPAPMI. Both TPANMI and TPAPMI exhibit RTP properties (even in ambient condition) because of the presence of a reasonably low singlet-triplet energy gap (δEST). In our study, these two luminogens were found to be mechano-inactive. Interestingly, an insertion of cyano-ethylene group and benzene linker in between the triphenylamine and phthalimide moieties introduced another luminogen TPACNPMI, which can simultaneously exhibit AIE, RTP, and mechanochromic properties.
Ferrocene modified triphenylamine derivative electrochromic composite material and preparation method thereof (by machine translation)
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Page/Page column 6; 10; 12; 14, (2020/02/17)
The invention discloses a ferrocene modified triphenylamine derivative compound electrochromism material and a preparation method thereof,and the preparation method 4 - comprises the following steps: firstly, the preparation method of the ferrocene-containing diphenylamine dimer comprises the, following steps: firstly, carrying out an oxidation-reduction 4,4' - reaction with perchloric acid; copper 4,4' - 4,4' - Vilsmerier . (by machine translation)