628337-00-8Relevant academic research and scientific papers
Effect of mono- and di-anchoring dyes based on o,m-difluoro substituted phenylene spacer in liquid and solid state dye sensitized solar cells
Raju, Telugu Bhim,Vaghasiya, Jayraj V.,Afroz, Mohammad Adil,Soni, Saurabh S.,Iyer, Parameswar Krishnan
, (2020)
Novel mono- and di-anchoring organic dyes have been designed and synthesized with o,m-difluoro substituted phenylene spacer and were tested for DSSCs in presence of solid-state (SJE-4) as well as liquid (BMII) electrolytes. The new and simple structures o
Blue-red emitting 2,12-disubstituted [5]helicenes for high fluorescence efficiency and sensing application
Yadagiri,Rana, Prem Jyoti Singh,Singh, Surya Prakash
, (2021)
We report photochemical synthesis of two new fluorene and carbazole-based 2,12-disubstituted [5]helicenes namely FLU-HEL and CBZ-HEL respectively. Both FLU-HEL and CBZ-HEL exhibit very intense fluorescence property in solution as well as solid state. The fluorescence quantum yield (Φf) = 27 % and 30 % and life time ?τf?=9.7 ns and 4.2 ns were observe for both [5]helicenes, respectively. Also, both the [5]helicene dyes have shown very good sensing properties towards Fe3+ transition metal ion than other transition metal ions. We have also explored the feasibility of these compounds for security applications.
Bipyridine anchoring group dye sensitizer and preparation method and application thereof
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Paragraph 0028; 0051; 0053-0054, (2019/05/28)
The invention belongs to the technical field of solar cells and discloses a carbozoles dye sensitizer containing bipyridine anchoring group and a preparation method and application thereof. Molecularstructure of the dye sensitizer is shown as a formula A; the dye sensitizer takes long carbon chain modified double-carbozole group as an electron donor part, so that electron donating ability of dyeis improved, and improving of solubility of the dye is facilitated; quinoxaline is taken for bridging, and rigid bipyridine is taken as anchoring group, so that adsorption stability and adsorption capacity of the dye are improved, and charge injection performance is improved. A preparation method of the dye is simple and high in operation feasibility and repeatability, and the dye can be synthesized through organic reaction like simple substitution, Suzuki coupling and condensation; the dye shows high photoelectric conversion efficiency in dye-sensitized solar cells, which is of being certainguiding significance in developing efficient organic dye sensitizers.
Novel 3, 5-position styryl-bridged BODIPY dyes and preparation method thereof
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, (2017/10/26)
The invention discloses novel 3, 5-position styryl-bridged BODIPY dyes and a preparation method thereof. The novel 3, 5-position styryl-bridged BODIPY dyes I are prepared by first performing Suzuki coupling on halogenated fluorene, carbazole, phenothiazine and other groups and p-formylbenzeneboronic acid under the catalytic action of tetrakis(triphenylphosphine palladium) to obtain corresponding aldehyde with a donor unit, and then performing Knoevenagel condensation on the corresponding aldehyde and a BODIPY unit under the action of piperidine. A synthesis method of the novel 3, 5-position styryl-bridged BODIPY dyes I is simple; the reaction condition is easy to control; the novel 3, 5-position styryl-bridged BODIPY dyes have universal applicability, can be widely applied to the scientific fields of energy, life, analysis, materials and the like, and are especially suitable to be used as organic small molecule solar cell donor materials.
Novel BODIPY dyes with electron donor variety for dye-sensitized solar cells
Liao, Junxu,Zhao, Hongbin,Xu, Yongjun,Zhou, Weinan,Peng, Fei,Wang, Yong,Fang, Yutang
, p. 33975 - 33985 (2017/07/17)
Four new donor-π-acceptor (D-π-A) structured organic sensitizers (CB1-4), with N-octyl or N-methoxyphenyl carbazole connected to a 2-cyanoacrylate BODIPY module through their 2 or 3-positions, were designed and synthesized for application in dye-sensitize
Novel 2,1,3-benzothiadiazole derivatives used as selective fluorescent and colorimetric sensors for fluoride ion
Wu, Jiefei,Lai, Guoqiao,Li, Zhifang,Lu, Yunxiang,Leng, Taohua,Shen, Yongjia,Wang, Chengyun
, p. 268 - 276 (2015/10/28)
Two novel 2,1,3-benzothiadiazole derivatives, used as colorimetric and fluorescent sensors for fluoride ion were designed, synthesized and characterized. These sensors contained single hydrogen-bond functional groups, which acted as interacting sites for fluoride ion. Both sensors displayed a red color in dimethyl sulfoxide solution. Binding studies revealed that they showed noticeable colorimetric and fluorescent responses only to F- among the eight anions tested (F-, Cl-, Br-, I-, AcO-, H2PO4-, HSO4- and NO3-). 1H NMR titration proved that the interaction between compounds and fluoride ion: hydrogen bond at low fluoride ion concentration, deprotonation at high fluoride ion concentration. Moreover, those compounds showed high sensitivity and selectivity for fluoride ion by inhibiting the excited state intramolecular proton transfer processes, and the detective processes could be followed by direct visual observation.
Novel 2,6-site-substituted BODIPY organic dye sensitizer and preparation method therefor
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, (2016/10/09)
The present invention relates to a novel 2,6-site-substituted BODIPY organic dye sensitizer and a preparation method therefor. The organic dye sensitizer is organic photovoltaic materials with a D-pi-A structure. By taking a meso-site-substituted BODIPY core as a pi bridge framework, the sites 2 and 6 of the BODIPY core is respectively substituted by an electron donor and an electron acceptor. The present invention further discloses a preparation method for the above the dye sensitizer. The preparation method obtains a dye molecule having a general structural formula I by taking 2,4-dimethylpyrrole as an initial reaction raw material, performing a serials of simple synthesis reactions, and finally performing classical Suzuki coupling and Knoevenagel condensation reactions. The dye sensitizer synthesis method is simple, easy to control and high in yield, and has general applicability. When the method is applied to dye sensitized solar cell preparation, a dye sensitized solar cell material with a high fill factor and an ideal photoelectric conversion efficiency can be obtained. The formula I is shown in the description.
Median alkoxy phenyl substituted and 2, 6 site strong electron donating group substituted BODIPY (4,4'-difluoro-4-bora-3a,4a-diaza-sindacene) derivative and preparation method thereof
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, (2016/10/10)
The invention discloses a median alkoxy phenyl substituted and 2, 6 site strong electron donating group substituted BODIPY (4,4'-difluoro-4-bora-3a,4a-diaza-sindacene) derivative and a preparation method thereof. The preparation method comprises: synthesizing a median alkoxy phenyl substituted 2, 6-dibromo fluorine boron intermediate through a series of reactions; and performing Suzuki/Stille coupling reaction by using the intermediate and a variety of modified groups to obtain a median alkoxy phenyl substituted and 2, 6 site thiofuran, thienothiophene, fluorene, carbazole and other strong electron donating units substituted BODIPY derivatives. The absorption spectrum of the prepared target dye molecules generates obvious bathochromic shift, and the maximum absorption wavelength is lengthened to a near infrared area. The median alkoxy phenyl substituted and 2, 6 site strong electron donating group substituted BODIPY derivative has good stability, and has potential application values in the fields of life sciences, solar batteries, environment energy sources and the like.
Boron fluoride complexing bi-pyrrole methylidyne derivative substituted by meso-position alkyl thiophene and 3,5-position electron-donating group and preparation method of derivative
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Paragraph 0086; 0087, (2016/10/08)
The invention discloses a boron fluoride complexing bi-pyrrole methylidyne derivative substituted by meso-position alkyl thiophene and a 3,5-position electron-donating group and a preparation method of the derivative. According to the method, 2-bromothiophene serves as a starting raw material, dipyrrylmethanes substituted by meso-position alkyl thiophene is synthesized through a series of reactions, NBS bromination is conducted, and 3,5-dibromo bi-pyrrolidine is obtained; then, TCQ oxidation and boron trifluoride ether complexing are conducted, a 3,5-boron dibromo fluorine intermediate with the meso-position containing alkyl thiophene is obtained, then the intermediate is utilized to conduct an Suzuki/Stille coupled reaction with a variety of modification groups, the boron fluoride complexing bi-pyrrole methylidyne derivative substituted by a 3,5-position donor unit is obtained, and the structural formula can be found in formula I. The boron fluoride complexing bi-pyrrole methylidyne derivative substituted by meso-position alkyl thiophene and the 3,5-position electron-donating group has good stability and has potential application value in the fields of life science, solar cells, environment, energy and the like.
Carbazole/fluorene based conjugated small molecules: Synthesis and comparative studies on the optical, thermal and electrochemical properties
Irfan, Madiha,Belfield, Kevin D.,Saeed, Aamer
, p. 48760 - 48768 (2015/06/16)
A series of new molecular materials with varying carbazole and fluorene contents were prepared employing Suzuki coupling and their properties were compared. A variation of the core nucleus from fluorene to carbazole was a key point to study its effect on the thermal, optical and electrochemical properties. The materials were characterized by FTIR, 1H-, 13C-NMR, APCI-MS and elemental microanalyses. The synthesized materials exhibit slightly bathochromic shifted UV/Vis spectra in dilute solution and emission maxima in the blue region along with good thermal stability. The dyes with a fluorene core are electrochemically and spectrally stable with high lying HOMO levels, in contrast to the carbazole only materials, having potential as light emitting and hole transporting materials in organic light emitting diodes.
