Category: 219537-97-0

Goestl, Robert published the artcileSterically crowding the bridge of dithienylcyclopentenes for enhanced photoswitching performance, SDS of cas: 219537-97-0, the publication is Chemistry – A European Journal (2012), 18(45), 14282-14285, S14282/1-S14282/28, database is CAplus and MEDLINE.

Diarylethenes (DAEs) are photochromic mols. with outstanding physicochem. properties. They are ideal for incorporation into materials for optoelectronics because of their superior switching properties. DAEs undergo a reversible 6p electrocyclic reaction upon irradiation with light. The efficiency of the photocyclization reaction is governed by its quantum yield, which is dependent on the equilibrium between the parallel (p) and the antiparallel (ap) conformation. Steric repulsion, which is largely independent of the environment, can also be used to influence the equilibrium between p and ap conformation. Herein, we report a synthetically straightforward method for introducing bulky substituents into the bridge moiety of dithienylcyclopentenes, thus leading to derivatives exhibiting higher photocyclization quantum yield.

Chemistry – A European Journal 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

Creemer, Cassidy published the artcileLight-controlled self-assembly of a dithienylethene bolaamphiphile in water, Category: chlorides-buliding-blocks, the publication is Dalton Transactions (2020), 49(26), 8846-8849, database is CAplus and MEDLINE.

The self-assembly of bolaamphiphiles comprised of a central photochromic dithienylethene (DTE) chromophore was investigated in aqueous media. Irradiation at 254 nm induced a conversion from the open to closed states of the DTE chromophores. Whereas, in water, irradiation produced a photostationary state of 20 : 80 (open/closed), in methanol the ratio improved to 10 : 90 (open/closed). The open → closed transition was accompanied by the formation of 1D nanofibers during incubation in darkness.

Dalton Transactions 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, Category: chlorides-buliding-blocks.

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

Zou, Qi published the artcileNew photochromic chemosensors for Hg²⁺ and F^–, SDS of cas: 219537-97-0, the publication is Tetrahedron (2011), 67(5), 915-921, database is CAplus.

Two new chemosensors (1a and 1b) based on photochromic dithienylcyclopentene were designed and synthesized, and their spectral behaviors toward various metal ions and anions were studied. Compounds show excellent optical properties and distinguish Hg²⁺ and F^– in CH₃CN. Job’s plot reveals that the presence of Hg²⁺ induces the formation of a 1:1 complex between 1a or 1b and Hg²⁺. From the spectral responses and ¹H NMR anal., the deprotonation of the thioamide protons is proposed to explain the sensing mechanism for 1a and 1b toward F^–. 1A and 1b exhibit ring-opening and ring-closing photoisomerization with UV-visible light irradiation Also, their photochromic properties can be modulated by Hg²⁺ and F^– ions. Also, 1a and 1b in photostationary states become promising sensors for Hg²⁺ and F^– with high selectivity.

Tetrahedron 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 C14H17BClNO2, SDS of cas: 219537-97-0.

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

Hu, Fang published the artcileThe photocyclization-dependent ratiometric fluorescent switch: Synthesis, characterization and properties of some terpyridyl-based dithienylethenes, Computed Properties of 219537-97-0, the publication is Dyes and Pigments (2017), 161-167, database is CAplus.

Some terpyridyl-based dithienylethenes were synthesized and their structures were confirmed by NMR spectroscopy, mass spectroscopy and elemental anal. The photochromic properties and fluorescence behaviors of these compounds have been measured upon irradiation with UV or visible light in solution UV/vis absorption spectra and fluorescence spectra indicated that the dithienylethenes displayed obvious photochromism and fluorescent switch properties. Specially, when compared with other terpyridyl-based dithienylethenes, the triphenylamine and terpyridyl-based dithienylethene showed the photocyclization-dependent ratiometric fluorescent switch behaviors. D. functional theory indicated that the photocyclization-dependent ratiometric fluorescent changes were due to the donor-acceptor system of the switch.

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

Hu, Fang published the artcileCyanine-based dithienylethenes: synthesis, characterization, photochromism and biological imaging in living cells, COA of Formula: C15H14Cl2S2, the publication is RSC Advances (2015), 5(8), 5982-5987, database is CAplus.

Photochromic materials have been widely used in many fields such as electro-optical functional materials and novel bio-materials. In this study, six cyanine-based dithienylethene compounds were successfully developed, and their photoisomerization and emission change properties were fully investigated. The results indicated that the UV/vis absorption of pyridinium-based compounds displayed near-IR absorption, while their fluorescence showed quenching emission as a result of the changes in structure from open-ring isomers to closed-ring isomers. Therefore these cyanine-based compounds could be applied not only in photochromic materials, but also they could be used as fluorescence switches. Accordingly, one of these compounds was successfully used in the biol. imaging of living cells. These results suggest that cyanine-based dithienylethenes may be used as photoswitchable bio-materials in the future.

RSC Advances 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, COA of Formula: C15H14Cl2S2.

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

Park, Jihye published the artcileControlled Generation of Singlet Oxygen in Living Cells with Tunable Ratios of the Photochromic Switch in Metal-Organic Frameworks, Category: chlorides-buliding-blocks, the publication is Angewandte Chemie, International Edition (2016), 55(25), 7188-7193, database is CAplus and MEDLINE.

Development of a photosensitizing system that can reversibly control the generation of singlet oxygen (¹O₂) is of great interest for photodynamic therapy (PDT). Recently several photosensitizer-photochromic-switch dyads were reported as a potential means of the ¹O₂ control in PDT. However, the delivery of such a homogeneous mol. dyad as designed (e.g., optimal molar ratio) is extremely challenging in living systems. Herein we show a Zr-MOF nanoplatform, demonstrating energy transfer-based ¹O₂ controlled PDT. Our strategy allows for tuning the ratios between photosensitizer and the switch mol., enabling maximum control of ¹O₂ generation. Meanwhile, the MOF provides proximal placement of the functional entities for efficient intermol. energy transfer. As a result, the MOF nanoparticle formulation showed enhanced PDT efficacy with superior ¹O₂ control compared to that of homogeneous mol. analogs.

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 C15H14Cl2S2, Category: chlorides-buliding-blocks.

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

Pijper, Thomas C. published the artcilePosition and Orientation Control of a Photo- and Electrochromic Dithienylethene Using a Tripodal Anchor on Gold Surfaces, Synthetic Route of 219537-97-0, the publication is Journal of Physical Chemistry C (2015), 119(7), 3648-3657, database is CAplus.

A tripodal system for anchoring photochromic dithienylethenes on gold surfaces is reported. The self-assembled monolayers of a tripod-functionalized dithienylethene were characterized by cyclic voltammetry, surface-enhanced Raman spectroscopy (SERS), and XPS. These data are compared with solution studies, solid state Raman spectroscopy, and d. functional theory (DFT) calculations We show that the tripod-functionalized dithienylethene forms stable monolayers on gold in which all three legs of the tripod are adsorbed via the thiol units, thus providing a fixed position and orientation of the dithienylethene moiety with respect to the surface. Importantly, immobilization in this way allows for retention of both the photochem. and electrochem. functionality of the dithienylethene unit and reduces photochem. fatigue observed in solution

Journal of Physical Chemistry C 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

Dragu, Eugenia Andreea published the artcileVisible-light triggered photoswitching systems based on fluorescent azulenyl-substituted dithienylcyclopentenes, Computed Properties of 219537-97-0, the publication is RSC Advances (2015), 5(78), 63282-63286, database is CAplus.

Novel azulenyl functionalized dithienylethenes were synthesized, and their photochromic reactivity, fluorescent and electrochem. properties were investigated. By tailoring the conventional dithienylcyclopentene chromophore with azulene groups, the photocyclization occurred with 405 nm wavelength light irradiation These compounds exhibited relatively strong fluorescence at 524 nm when excited at 360 nm, which decreased along with the photocyclization. Furthermore, their electrochem. oxidation induced cyclization.

RSC Advances 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

Zhang, Haining published the artcileA solid-state fluorescence switch based on triphenylethene-functionalized dithienylethene with aggregation-induced emission, Recommanded Product: 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, the publication is Frontiers in Chemistry (Lausanne, Switzerland) (2021), 665880, database is CAplus and MEDLINE.

In this contribution, three novel triphenylethene-functionalized dithienylethenes I (R = H, OMe, CF₃) have been designed and prepared by appending triphenylethene moieties at one end of dithienylethene unit. They display good photochromic behaviors with excellent fatigue resistance upon irradiation with UV or visible light in THF (THF) solution Before irradiation with UV light, they exhibit aggregation induced emission (AIE) properties and luminescence behaviors in the solid state. Moreover, upon alternating irradiation with UV/visible light, they display effective fluorescent switching behaviors in the aggregated state and the solid state. The exptl. results have been validated by the d. functional theory (DFT) calculations Thus, they can be utilized as novel fluorescence switches integrated in smart, solid-state optoelectronic materials and photopharmacol.

Frontiers in Chemistry (Lausanne, Switzerland) 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 C6H8N2O2, 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

Li, Ziyong published the artcileVisible light-activated optical switching behaviors of tetra-/triphenylethene-dithienylethene-BF₂bdk triad, Synthetic Route of 219537-97-0, the publication is Dyes and Pigments (2020), 108686, database is CAplus.

Developing new visible light-triggered fluorescent mol. photoswitches is highly desirable for potential application in the fields of photoresponsive optoelectronics and photopharmacol. In this contribution, two novel tetra-/triphenylethene-dithienylethene-BF₂bdk triads (TDB1 and TDB2) were designed and prepared by appending tetra-/triphenylethene and BF₂bdk moieties at the termini of dithienylethene unit. Before irradiation with blue light at 460-470 nm, they showed an intense emission in solution and in the PMMA film state, suggesting that the AIE effect of tetra-/triphenylethene was inhibited, and functioned only as electron-donating groups. Moreover, upon alternating irradiation with blue/NIR light, TDB1 and TDB2 displayed effective fluorescent switching behaviors and NIR photochromism in toluene and the PMMA film. Therefore, they would be utilized as novel visible light-triggered switches integrated in smart optoelectronic materials. The DFT calculations further validate the differences for their optical properties in the experiments

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, Synthetic Route of 219537-97-0.

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