Category: 219537-97-0

Yan, Qing published the artcileAll-visible-light triggered solid-state dual-color fluorescence switching of phenanthroimidazole-based bisthienylethene, Safety of 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, the publication is Journal of Materials Chemistry C: Materials for Optical and Electronic Devices (2022), 10(18), 7024-7030, database is CAplus.

All-visible-light controlled fluorescence switching is more promising for bioimaging. Constructing dual-color fluorescent bisthienylethene (BTE) systems are quite challenging. Here, all-visible-light triggered dual-color fluorescence switching was achieved in a color-specific switching manner in a solid-state by associating the photochromic BTE core with a blue emissive phenanthroimidazole (PI) unit. Unique emission behavior caused by J-aggregation of the coplanar PI unit was crucial, which suggested a novel strategy for constructing dual-color fluorescent photoswitching. Moreover, a ‘turn-off’ fluorescence photoswitching was demonstrated in solution and PMMA films owing to the energy transfer from the PI moiety to a ring-closed isomer of the BTE moiety. Remarkably, an all-visible-light patterning application for information storage medium was developed with these compounds BTE-P1 was successfully utilized in cellular imaging for efficient fluorescence switching.

Journal of Materials Chemistry C: Materials for Optical and Electronic Devices published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C18H34N4O5S, Safety of 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Li, Ziyong published the artcileBlue-/NIR light-excited fluorescence switch based on a carbazole-dithienylethene-BF₂bdk triad, Synthetic Route of 219537-97-0, the publication is Journal of Organic Chemistry (2019), 84(21), 13364-13373, database is CAplus and MEDLINE.

The development of novel solid-state fluorescence switches, particularly triggered by visible light, is of increasing interest for the potential application in optical data storage and super-resolution fluorescence microscopies. In this study, two carbazole-dithienylethene-BF₂bdk triads CDB1 and CDB2, suspending carbazole and BF₂bdk moieties on both sides of dithienylethene unit, have been developed. They exhibit blue-/NIR light-controlled photochromism with solvent-dependent characteristics. Moreover, CDB1 (o) reveals blue-/NIR light-induced reversible fluorescent switching behaviors in toluene, chloroform, poly(Me methacrylate) (PMMA) film, and powder state, while its analog CDB2 (o) in the powder state exhibits no fluorescence due to a strong intermol. π-π stacking interaction, and the fluorescent switching performance is observed only in toluene and PMMA film. The d. functional theory calculations further validate the differences in their optical properties in the solution and powder states.

Journal of Organic Chemistry published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C15H14Cl2S2, Synthetic Route of 219537-97-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Li, Ziyong published the artcileDithienylethene-bridged difluoroboron β-diketonate dyes: Optical switching behaviors and triple sensing for volatile amine vapors, Computed Properties of 219537-97-0, the publication is Dyes and Pigments (2020), 108419, database is CAplus.

Developing new visible light-triggered NIR photochromic sensors for the accurate detection of volatile amine vapors in the solid state is highly desirable. Herein, three novel dithienylethene-bridged difluoroboron β-diketonate dyes Di-BF₂bdk-DTE1-Di-BF₂bdk-DTE3, in which BF₂bdk group not only functions as electron acceptor but also responds to amine vapors, have been developed. Upon alternating irradiation with blue light (460-470 nm) and near-IR light (760-770 nm), they displayed excellent NIR photochromism and fluorescent switching behaviors in toluene and in the PMMA film. Moreover, they showed an unprecedented triple sensing performance for volatile n-propylamine vapor in the PMMA film state (fluorescent-colorimetric-colorimetric). Therefore, they would be utilized as triple sensing membranes for selective detection towards volatile primary or secondary amine vapors in environmental and biol. systems.

Dyes and Pigments published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C15H14Cl2S2, Computed Properties of 219537-97-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Tam, Eugenia S. published the artcileSingle-Molecule Conductance of Pyridine-Terminated Dithienylethene Switch Molecules, Recommanded Product: 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, the publication is ACS Nano (2011), 5(6), 5115-5123, database is CAplus and MEDLINE.

The authors have studied the conductance of individual optically switchable dithienylethene mols. in both their conducting closed configuration and nonconducting open configuration, using the technique of repeatedly formed break-junctions. The authors employed pyridine groups to link the mols. to gold electrodes to achieve relatively well-defined mol. contacts and stable conductance. For the closed form of each mol., the authors observed a peak in the conductance histogram constructed without any data selection, allowing the authors to determine the conductance of the fully stretched mols. For two different dithienylethene derivatives, these closed-configuration conductances were (3.3 ± 0.5) × 10^-5G₀ and (1.5 ± 0.5) × 10^-6G₀, where G₀ is the conductance quantum. For the open configuration of the mols., the existence of elec. conduction via the mol. was evident in traces of conductance vs. junction displacement, but the conductance of the fully stretched mols. was less than the noise floor of the authors’ measurement. The authors can set a lower limit of 30 for the on/off ratio for the simplest dithienylethene derivative the authors have studied. D. functional theory calculations predict an on/off ratio consistent with this result.

ACS Nano published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C17H14F3N3O2S, Recommanded Product: 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Wissler, Joerg published the artcile5,5′-Dimethyl-4,4′-bis[2-(2-methyl-3-thienyl)cyclopentenyl]-2,2′-bithiophene, Product Details of C15H14Cl2S2, the publication is Acta Crystallographica, Section E: Structure Reports Online (2007), 63(6), o2813-o2814, database is CAplus.

The mol. of 5,5′-dimethyl-4,4′-bis[2-(2-methyl-3-thienyl)cyclopentenyl]-2,2′-bithiophene, C₃₀H₃₀S₄, is located on a center of inversion. The cyclopentene ring is almost planar. The thiophene rings are twisted out of the plane of the cyclopentene ring by 47.41(8) and 46.25(9)°. Crystallog. data are given.

Acta Crystallographica, Section E: Structure Reports Online published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C6H16OSi, Product Details of C15H14Cl2S2.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Wissler, Joerg published the artcile1,2-Bis(5-chloro-2-methyl-3-thienyl)cyclopentene, SDS of cas: 219537-97-0, the publication is Acta Crystallographica, Section E: Structure Reports Online (2006), 62(12), o5649-o5650, database is CAplus.

The cyclopentene ring of 1,2-bis(5-chloro-2-methyl-3-thienyl)cyclopentene, C₁₅H₁₄Cl₂S₂, is almost planar. The 2 thiophene rings are twisted out of the mean plane of the cyclopentene ring by 39.97(5) and 50.84(5)°. Crystallog. data are given.

Acta Crystallographica, Section E: Structure Reports Online published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C19H17N2NaO4S, SDS of cas: 219537-97-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Orehovec, Iva published the artcileBis-pyrene photo-switch open- and closed-form differently bind to ds-DNA, ds-RNA and serum albumin and reveal light-induced bioactivity, Application In Synthesis of 219537-97-0, the publication is International Journal of Molecular Sciences (2021), 22(9), 4916, database is CAplus and MEDLINE.

Newly designed and synthesized diarylethene (DAE) derivatives with aliphatic amine sidearms I and one with two pyrenes II, revealed excellent photo-switching property of central DAE core in MeOH and water. The only exception was bis-pyrene analog, its DAE core very readily photochem. closed, but reversible opening completely hampered by aromatic stacking interaction of pyrene(s) with cyclic DAE. In this process, pyrene fluorescence showed to be a reliable monitoring method, an open form characterized by strong emission at 480 nm (typical for pyrene-aggregate), while closed form emitted weakly at 400 nm (typical for pyrene-DAE quenching). Only open DAE-bis-pyrene form interacted measurably with ds-DNA/RNA by flexible insertion in polynucleotide grooves, while self-stacked closed form did not bind to DNA/RNA. For the same steric reasons, flexible open DAE-bis-pyrene form was bound to at least three different binding sites at bovine serum albumin (BSA), while rigid, self-stacked closed form interacted dominantly with only one BSA site. Preliminary screening of antiproliferative activity against human lung carcinoma cell line A549 revealed that all DAE-derivatives were non-toxic. However, bis-pyrene analog efficiently entered cells and located in the cytoplasm, whereby irradiation by light (315-400 nm) resulted in a strong, photo-induced cytotoxic effect, typical for pyrene-related singlet oxygen species production

International Journal of Molecular Sciences published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C15H14Cl2S2, Application In Synthesis of 219537-97-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Dong, Huan published the artcileSynthesis and properties of tetraphenylethylene derivatived diarylethene with photochromism and aggregation-induced emission, HPLC of Formula: 219537-97-0, the publication is Dyes and Pigments (2017), 118-128, database is CAplus.

A series of new diarylethene compounds with both photochromism and aggregation-induced emission have been synthesized by connecting tetraphenylethene and triphenylethene to the bisthienylethene. All the four compounds exhibit good photochromism upon irradiation with alternative UV and visible light. And they are all provided with aggregation-induced emission properties in THF solution with different fraction of water, non-emissive in the pure THF solution but yellowish green fluorescence in the aggregate or solid state. Furthermore, the compounds connecting tetraphenylethene to the bisthienylethene were found to exhibit the stronger fluorescence emission in the aggregate or solid state than the ones connecting triphenylethene to the bisthienylethene.

Dyes and Pigments published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C15H14Cl2S2, HPLC of Formula: 219537-97-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Yu, Fei published the artcilePhotostimulus-Responsive Large-Area Two-Dimensional Covalent Organic Framework Films, Quality Control of 219537-97-0, the publication is Angewandte Chemie, International Edition (2019), 58(45), 16101-16104, database is CAplus and MEDLINE.

Using an external stimulus to modulate the electronic structure of covalent organic frameworks (COFs) is very important because such a response will endow them with addnl. functions. A two-dimensional (2D) COF, constructed from a photo-responsive unit (1,2-bis(5-formyl-2-methylthien-3-yl)cyclopentene), can reversibly switch its elec. conductivity 200 times from low state (the open form) to high state (the closed form) upon irradiation with UV light and reversible with visible light. This reversible phenomenon can be monitored through a circuit containing a light-emitting diode (LED). Photoinduced ring-closing/opening reactions do not destroy the integrity of the frameworks, and both processes follow logarithmic carrier generation with time. Moreover, the correlation between COFs electronic properties and changes in photoinduced kinetics and absorption curves has been demonstrated.

Angewandte Chemie, International Edition published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C3H8N2S, Quality Control of 219537-97-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Huang, Wenxiu published the artcileFunctional polyimides based on diamine containing diarylethylene moieties and their photochromic mechanism studies, SDS of cas: 219537-97-0, the publication is Polymer Chemistry (2020), 11(41), 6701-6707, database is CAplus.

To expand the existing application conditions of photochromic polymers and enhance the tolerance of photochromic polymer electronic devices in extreme environments, a diamine monomer DTEDA bearing the diarylethylene (DTE) moiety was synthesized and polymerized with com. available dihydrides to afford three polyimides (PIs, named DTEODPI, DTE6FPI and DTEHPMPI) through chem. imidization. These PIs realized reversible photo-triggered isomerization both in solution and in film state, with solution photoluminescence “on/off” effects. Semi-aromatic DTEHPMPI showed the largest contrast of color and fastest light response due to its local excited (LE) state. This research provides a simple method to prepare photochromic polymer materials with excellent comprehensive properties.

Polymer Chemistry published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C15H14Cl2S2, SDS of cas: 219537-97-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics