6915-68-0Relevant academic research and scientific papers
Neutral state colorless electrochromic polymer networks: Spacer effect on electrochromic performance
Gulfidan, Damla,Sefer, Emre,Koyuncu, Sermet,Acar, Metin H.
, p. 5998 - 6005 (2015/01/09)
A series of carbazole-based monomers and their corresponding polymers with various spacer units were synthesized and coated onto ITO-glass surface via an electrochemical cross-linking process. All carbazole-based polymers exhibited multi-electrochromic be
Microstructure characterization of poly(2-N-carbazolylethyl acrylate) by two-dimensional NMR spectroscopy
Brar,Markanday,Gandhi
, p. 58 - 63 (2007/10/03)
Poly(2-N-carbazolylethyl acrylate) has been synthesized by solution polymerization of 2-N-carbazolyethyl acrylate with 2,2′- azobisisobutyronitrile as free radical initiator. Distortionless Enhancement by Polarization Transfer has been used to distinguish between the overlapping main-chain methine and side-chain methylene resonances in 13C( 1H) NMR spectrum. Configurational assignments of carbon and proton resonances of main-chain methylene group have been done using two-dimensional Heteronuclear Single Quantum Correlation spectroscopy and two-dimensional Total Correlation Spectroscopy. Two and three bond order carbon/proton couplings have been investigated using Heteronuclear Multiple Bond Correlation studies.
Electron-Transfer Quenching Accompanied by Highly Efficient Energy Migration in Polymer Langmuir-Blodgett Films
Yatsue, Toru,Miyashita, Tokuji
, p. 16047 - 16051 (2007/10/02)
Copolymers of N-dodecylacrylamide (DDA), which has the excellent property to form LB film, and 2-(9-carbazolyl)ethyl acrylate (CzEA) with various copolymer compositions were prepared to investigate the electron transfer quenching of the excited carbazole chromophore in LB film assembly.The copolymers form a stable condensed monolayer and LB film in a wide range of copolymer compositions.In LB films, the emission spectra show only the structured emission characteristic of the monomeric carbazole chromophore at 350 nm and no excimer emission whereas the corresponding N-vinylcarbazole copolymer LB films in the previous study show strong emision from excimer which acts as an energy trapping site.For the quenching study, the DDA-CzEA monolayer are in direct contact with the mixed monolayer of barius stearate and stearyl viologen quencher.The emission of the excited carbazole was quenched effectively by a small amount of the viologen quencher in the mixed monolayer.The quenching efficiency was varied linearly by the mole fraction of carbazole chromophore in the copolymer monolayer.The effective electron-transfer quenching is attributed to the highly efficient energy migration between carbazole chromophores, which is assisted with a regular alignment of carbazole chromophore and no excimer formation in the copolymer LB films.The plots of ln(I0/I-1) (I in the presence of and I0 in the absence of the quencher) vs distance (R) between the quenchers gave a linear relationship.The mechanism of electron transfer quenching in the LB film assembly is discussed on the basis of electron-tunneling and energy migration.
A NOVEL SYNTHESIS OF POLYACRYLATES AND POLYMETHACRYLATES WITH PENDANT CARBAZOLE GROUPS
Strohriegl, Peter
, p. 261 - 267 (2007/10/02)
A series of novel polyacrylates and polymethacrylates with pendant carbazole groups has been prepared.In these polymers the carbazole groups are separated from the polymer backbone by alkyl spacers of variable length.The title compounds have been prepared by two different methods: free radical polymerization of the corresponding acrylates and methacrylates and a novel polymeranalogous reaction of ω-hydroxyalkylcarbazoles with poly(meth)acryloylchloride.
