776-40-9Relevant academic research and scientific papers
Quadrupolar fluorophores with tetrafluorobenzene central electron acceptor
Kulhánek, Ji?í,Klikar, Milan,Pytela, Old?ich,Almonasy, Numan,Tydlitát, Ji?í,Bure?, Filip
, (2021/02/16)
Seven novel quadrupolar chromophores based on 1,2,4,5-tetrafluorobenzene (TFB) central electron acceptor unit and methoxythiophene peripheral donor were synthetized and described. Fundamental structure-property relationships were elucidated via thermal, e
Synthesis, structure, and photoreactions of fluorinated 2,11-diaza[32]paracyclophane: Photochemical formation of cage-diene type benzene dimer
Okamoto, Hideki,Kozai, Tetsuya,Okabayashi, Zenji,Shinmyozu, Teruo,Ota, Hiromi,Amimoto, Kiichi,Satake, Kyosuke
supporting information, (2017/08/23)
An octafluorinated 2,11-diaza[32]paracyclophane derivative 12 was prepared, and its photochemical reaction was investigated. Upon irradiation at 300?nm, the fluorinated azacyclophane 12 underwent efficient photodimerization of the benzene cores to afford the corresponding photoisomer 13, which possessed cage diene benzene dimer structure (pentacyclo[6.4.0.0.2,70.3,1206,9]dodeca-4,10-diene skeleton). The cage diene structure was established by single-crystal X-ray diffraction analysis. The cage diene 13 thermally isomerized to a syn-o,o′-dibenzene isomer 22. The activation parameters for the thermal isomerization were determined to be Ea?=?121?kJ?mol?1, ΔH≠?=?118?kJ?mol?1, ΔS≠ (293?K)?=?22?J?mol?1?K?1, and ΔG≠ (293?K)?=?111?kJ?mol?1. It was revealed that, by photoirradiation at 300?nm, the syn-o,o′-dibenzene isomer 22 underwent facile intramolecular [π4s?+?π4s] cycloaddition to reproduce the cage diene isomer 13.
Hydrophilic Conjugated Polymers Prepared by Aqueous Horner-Wadsworth-Emmons Coupling
Page, Zachariah A.,Liu, Yao,Puodziukynaite, Egle,Russell, Thomas P.,Emrick, Todd
, p. 2526 - 2532 (2016/05/19)
The synthesis of hydrophilic conjugated polymers typically relies on organometallic coupling methodologies. Here we present an approach to prepare polar poly(arylene-vinylene)s (PAVs) in water using the Horner-Wadsworth-Emmons (HWE) reaction. The additional preparation of discrete arylene vinylene (AVs) afforded insight into HWE kinetics and regioselectivity. Nine novel PAVs and AVs were synthesized, characterized by UV-vis absorption and ultraviolet photoelectron spectroscopy, and studied for their utility in sensing and photovoltaic applications.
Luminogenic and fluorogenic compounds and methods to detect molecules or conditions
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Paragraph 0423, (2016/07/27)
A method to detect the presence or amount of at least one molecule in a sample which employs a derivative of luciferin or a derivative of a fluorophore is provided.
PROCESS FOR THE PREPARATION OF OPTICALLY ACTIVE ISOXAZOLINE COMPOUNDS
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Page/Page column 7-8, (2016/02/29)
The present invention relates to a process for the preparation of a compound of formula (I) wherein A1 and A2 are C-H, or one of A1 and A2 is C-H and the other is N; R1 is C1-C4a
Influence of molecular structure on the antimicrobial function of phenylenevinylene conjugated oligoelectrolytes
Yan, Hengjing,Rengert, Zachary D.,Thomas, Alexander W.,Rehermann, Carolin,Hinks, Jamie,Bazan, Guillermo C.
, p. 5714 - 5722 (2016/09/03)
Conjugated oligoelectrolytes (COEs) with phenylenevinylene (PV) repeat units are known to spontaneously intercalate into cell membranes. Twelve COEs, including seven structures reported here for the first time, were investigated for the relationship betwe
Electrochromic compounds, electrochromic composition, and a display element
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Paragraph 0146-0147, (2016/10/10)
PROBLEM TO BE SOLVED: To provide an electrochromic compound and electrochromic composition which show sharp light absorption spectral characteristics in color development, and present yellow based, cyan based, and black based color developments, and to provide a display element using the electrochromic compound or electrochromic composition. SOLUTION: The electrochromic compound is represented by formula (1). In the formula (1), X1, X2, X3, and X4each independently denote a hydrogen atom or a monovalent substituent, n denotes the integer of 1 to 6, Rs each independently denote a monovalent substituent, and Ar denotes a benzene ring which may have a substituent when n is from 1 to 5, and only a benzene ring when n is 6, and A-denotes a monovalent anion. COPYRIGHT: (C)2011,JPOandINPIT
Introducing Solubility Control for Improved Organic P-Type Dopants
Li, Jun,Zhang, Guangwu,Holm, Daniella M.,Jacobs, Ian E.,Yin, Bin,Stroeve, Pieter,Mascal, Mark,Moulé, Adam J.
, p. 5765 - 5774 (2015/09/02)
To overcome the poor solubility of the widely used p-type dopant 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4TCNQ), we have synthesized a series of structure-modified, organic p-type dopants to include alkyl ester groups designed to enable solubility and miscibility control. UV-vis-NIR and cyclic voltammetry measurements show increased solubility of mono- and diester substituted dopants with only modest changes to acceptor strength. Using absorption spectroscopy, photoluminescence, and in-plane conductivity measurements, we demonstrate that the new dopants can successfully p-type dope poly(3-hexylthiophene-2,5-diyl) (P3HT). Monoester substituted dopants are characterized by only slightly reduced electron affinity relative to F4TCNQ, but greater doping effectiveness due to increased miscibility with P3HT. Diester substituted dopants undergo a dimerization reaction before assuming their doped states, which may help anchor dopants into position post deposition, thus decreasing the negative effect of dopant drift and diffusion. We conclude that increased dopant solubility/miscibility increases the overall effectiveness of doping in solution-cast polymer films and that ester modification is a practical approach to achieving solubility/miscibility control in TCNQ-type dopants (Figure Presented).
Fluoro-functionalized polymeric ionic liquids: Highly efficient catalysts for CO2 cycloaddition to cyclic carbonates under mild conditions
Yang, Zhen-Zhen,Zhao, Yanfei,Ji, Guipeng,Zhang, Hongye,Yu, Bo,Gao, Xiang,Liu, Zhimin
supporting information, p. 3724 - 3728 (2014/08/05)
Fluoro-functionalized polymeric ionic liquids (F-PILs) with imidazolium cations and bromide or chloride anions were designed for cycloaddition reactions of CO2 with epoxides. It was found that the fluorine content in F-PILs significantly influe
Highly efficient non-covalent energy transfer in all-organic macrocycles
Radaram, Bhasker,Potvin, Joshua,Levine, Mindy
supporting information, p. 8259 - 8261 (2013/09/12)
The use of aromatic organic macrocycles as supramolecular hosts for non-covalent energy transfer is reported herein. These macrocycles lead to stronger binding and more efficient energy transfer compared to commercially available γ-cyclodextrin. This energy transfer was particularly efficient for the highly toxic benzo[a]pyrene with a fluorescent BODIPY acceptor, with up to a 5-fold increase in the fluorophore emission observed.
