1260183-80-9

Basic information

• Product Name: pentafluorophenyl 4-ethynylbenzoate
• Synonyms: pentafluorophenyl 4-ethynylbenzoate
• CAS NO: 1260183-80-9
• Molecular Weight: 312.196
• EINECS: -0
• Mol File: 1260183-80-9.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: pentafluorophenyl 4-ethynylbenzoate(CAS DataBase Reference)
• NIST Chemistry Reference: pentafluorophenyl 4-ethynylbenzoate(1260183-80-9)
• EPA Substance Registry System: pentafluorophenyl 4-ethynylbenzoate(1260183-80-9)

Safety Data

• Hazardous Substances Data: 1260183-80-9(Hazardous Substances Data)

Upstream product

• 771-61-9 2,3,4,5,6-pentafluorophenol 
• 10602-00-3 4-Ethynyl-benzoic acid 
• 144693-66-3 p-Ethynylbenzoic acid potassium salt 
• 33577-98-9 methyl 4-(3-hydroxy-3-methylbut-1-ynyl)benzoate 
• 619-42-1 4-methoxycarbonylphenyl bromide 
• 62480-31-3 4-ethynylbenzoyl chloride 
• 586-76-5 4-Bromobenzoic acid 

Relevant articles and documents

Polyacetylene derivatives in perovskite solar cells: From defect passivation to moisture endurance

The last decade has witnessed the exploration of exceptional optoelectronic and photovoltaic properties of perovskite solar cells (PSCs) at the laboratory scale. Unfortunately, their sensitivity to moisture causes bulk degradation, hindering the commercialization of PSC devices. Despite the numerous strategies that have been developed to date in this field, effective passivation against moisture remains highly challenging. Here, we report a novel approach based on the incorporation of polyacetylene derivatives into the perovskite active layer to yield perovskite films with larger grains, lower defect density, and excellent robustness with respect to moisture. Moreover, it is revealed that the reduced trap-state density of these films is most likely due to the efficient coordination between the carboxylate moieties in the polymer and the undercoordinated Pb2+ in the perovskite. Upon adopting the polymer-doped perovskite as an active layer in inverted planar heterojunction PSCs with all-inorganic charge extraction layers, the power conversion efficiency (PCE) is improved to 20.41%, which is the highest value reported to date for this type of PSC to the best of our knowledge. Most importantly, the optimized device retained 90% of its initial PCE after aging in ambient air for 60 days due to its dual mechanism of moisture resistance. This work highlights an approach for developing high-performance PSCs with improved moisture stability and paves the way for their potential commercialization. This journal is

Synthesis and characterization of poly(phenylacetylenes) featuring activated ester side groups

Four monomers based on 4-ethynylbenzoic acid have been synthesized, one of those featuring an activated ester. With the metathesis catalytic system WCl6/Ph4Sn, these acetylenic monomers could successfully be polymerized yielding conjugated polymers with molecular weights of around 10,000 to 15,000 g/mol and molecular weight distributions Mw/M n ≤ 2.1. Also the copolymerization of phenylacetylene or methyl 4-ethynylbenzoate with pentafluorophenyl 4-ethynylbenzoate as reactive unit was conducted. Polymer analogous reactions of the reactive polymers and copolymers with amines have been investigated and it was found that poly(pentafluorophenyl 4-ethynylbenzoate) featured a significant reactivity, such that reactions proceeded quantitatively even with aromatic amines. Moreover the UV-Vis spectra of the activated ester based polymer before and after conversion with aliphatic amines showed a change, indicating an effect on the conjugated backbone of the polymers. Copyright