153312-87-9

Basic information

• Product Name: K0493
• Synonyms: 4,4-Dioctyl-cyclopenta[2,1-b:3,4-b']dithiophene
• CAS NO: 153312-87-9
• Molecular Formula: C₂₅H₃₈S₂
• Molecular Weight: 402.699
• Mol File: 153312-87-9.mol
• Article Data: 15

Chemical Properties

• CAS DataBase Reference: K0493(CAS DataBase Reference)
• NIST Chemistry Reference: K0493(153312-87-9)
• EPA Substance Registry System: K0493(153312-87-9)

Safety Data

• Hazardous Substances Data: 153312-87-9(Hazardous Substances Data)

Usage

General Description

Currently, there isn't sufficient data available to provide a summary of the chemical "K0493." It might be possible that the chemical identifier is not accurately inputted, as most chemicals are typically known by their specific name, ChemID, CID, CAS number, or molecular formula in scientific and industrial contexts. A revision of the chemical's unique identifier is recommended to ensure information accuracy.

Upstream product

• 389-58-2 4H-cyclopenta[2,1-b;3,4-b']dithiophene 
• 111-83-1 1-bromo-octane 
• 111-85-3 n-chlorooctane 
• 22913-26-4 methyl thiophene-3-carboxylate 
• 17049-49-9 octylmagnesium bromide 
• 19690-69-8 3-bromo-[2,2’]bithiophenyl 
• 540-08-9 heptadecan-9-one 
• 2243-27-8 nonanonitrile 
• 1253119-61-7 9-([2,2'-bithiophen]-3-yl)heptadecan-9-ol 
• 25796-77-4 4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one 

Relevant articles and documents

Fused Cyclopentadithienothiophene Acceptor Enables Ultrahigh Short-Circuit Current and High Efficiency >11% in As-Cast Organic Solar Cells

A new method to synthesize an electron-rich building block cyclopentadithienothiophene (9H-thieno-[3,2-b]thieno[2″,3″:4′,5′]thieno[2′,3′:3,4]cyclopenta[1,2-d]thiophene, CDTT) via a facile aromatic extension strategy is reported. By combining CDTT with 1,1-dicyanomethylene-3-indanone endgroups, a promising nonfullerene small molecule acceptor (CDTTIC) is prepared. As-cast, single-junction nonfullerene organic solar cells based on PFBDB-T: CDTTIC blends exhibit very high short-circuit currents up to 26.2 mA cm?2 in combination with power conversion efficiencies over 11% without any additional processing treatments. The high photocurrent results from the near-infrared absorption of the CDTTIC acceptor and the well-intermixed blend morphology of polymer donor PFBDB-T and CDTTIC. This work demonstrates a useful fused ring extension strategy and promising solar cell results, indicating the great potential of the CDTT derivatives as electron-rich building blocks for constructing high-performance small molecule acceptors in organic solar cells.

Synthesis and photovoltaic properties of cyclopentadithiophene-based low-bandgap copolymers that contain electron-withdrawing thiazole derivatives

We have synthesized four types of cyclopentadithiophene (CDT)based low-bandgap copolymers, poly[{4,4-bis(2-ethylhexyl)-4H-cyclopenta[2,1 -b :3,4-b']dithiophene-2,6-diy1}-alt(2,2'-bithiazole-5,5'-diy1)] (PehCDTBT), poly[(4,4-dioctyl-4H-cyclopenta[2,1-b:3,4-b']dithiophene-2,6-diyl)-alt(2, 2'-bithiazole-5,5'-diyl)] (PocCDTBT), poly[{4,4-bis(2-ethylhexyl)-4H- cyclopenta[2,1-b:3,4-b)']dithiophene-2,6diyl}-alt-{2,5-di(thiophen-2-y1) thiazolo[5,4-d]thiazole-5,5'-diy1}] (PehCDTTZ), and poly[(4,4-dioctyl-4H- cyclopenta[2,1-b:3,4-b']dithiophene-2,6diyl)-alt-{2,5-di(thiophen-2-y1) thiazolo[5,4-d]thiazole-5,5'-diy1}] (PocCDTTZ), for use in photovoltaic applications. The intramolecular charge-transfer interaction between the electronsufficient CDT unit and electron-deficient bithiazole (BT) or thiazolothiazole (TZ) units in the polymeric backbone induced a low bandgap and broad absorption that covered 300 nm to 700800 nm. The optical bandgap was measured to be around 1.9 eV for PehCDT-BT and PocCDT-BT, and around 1.8 eV for PehCDT-TZ and PocCDT-TZ. Gel permeation chromatography showed that number-average molecular weights ranged from 8000 to 14000 g mol-1. Field-effect mobility measurements showed hole mobility of 10 6-10-4 Cm2V-1 s-1 for the copolymers. The film morphology of the bulk heteroj unction mixtures with [6,6]phenyl-C61-butyric acid methyl ester (PCBM) was also examined by atomic force microscopy before and after heat treatment. When the polymers were blended with PCBM, PehCDT-TZ exhibited the best performance with an open circuit voltage of 0.69 V, short-circuit current of 7.14 mA cm-2, and power conversion efficiency of 2.23% under air mass (AM) 1.5 global (1.5 G) illumination conditions (100 mWcm-2).

New routes to poly(4,4-dialkylcyclopentadithiophene-2,6-diyls)

Two new polymerisation routes to poly(4,4-dioctylcyclopentadithiophene-2,6-diyl) are reported. The polymer prepared by Kumada type cross-coupling showed significantly reduced molecular weight over that prepared by direct oxidative polymerisation using iron(III) chloride. The higher molecular weight polymer was shown to have extended conjugation by UV-visible spectroscopy.

A two-thieno cyclopentadiene derivative and its preparation method (by machine translation)

The invention belongs to the technical field of organic photoelectric material, in particular to a two-thieno cyclopentadiene derivative and its preparation method. The invention discloses a two-thieno cyclopentadiene derivatives, the structural formula of Wherein R, R ' is C1 - C20 Alkyl, C1 - C10 C alkyl substituted phenyl or1 - C10 Alkyl substituted thienyl. The 2 - bromo thiophene, 3 - thiophene methyl formate and alkali soluble in organic solvent, under the action of the metal catalyst in the reflux reaction for 24 hours, then with an organic metal reagent reaction, after the strong acid ring can be 78 - 86% yields of two thiophene and a cyclopentadiene derivative. With the present invention novel, simple steps, high yield, the advantages of the product separation and purification. In addition, the invention relates to a two-thieno cyclopentadiene derivative structure comprising multiple parallel fused ring, conjugacy is strong, and can be used as organic photoelectric material field. (by machine translation)