ChemInform Abstract: Cynotophyllosides K—L from the Roots of Cynanchum otophyllum.

Pang, Wei-Wei; Zheng, Yang; Hu, Qian; Ma, Lie‐Feng; Wang, Fa-Song; Shan, Wei‐Guang; Zhan, Zha‐Jun

doi:10.1002/chin.201645179

Cited by 1 publication

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“…Triarylamine is a common structural motif in charge-transporting materials. 1 – 4 The most prominent example for polymeric triarylamines, poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine], commonly abbreviated as PTAA, is among the most frequently used hole transport materials (HTMs) in perovskite solar cells (PSCs). 5 , 6 Originally developed for applications in organic field-effect transistors (OFETs) 7 , it was first applied to PSCs in 2013 by Noh et al 8 and Heo et al 9 and is a popular choice ever since because of its remarkable stability and good solubility in common organic solvents.…”

Section: Introductionmentioning

confidence: 99%

Microwave-Assisted Synthesis of Poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA) with Well-Defined End Groups and Narrow Dispersity

Beck,

Strohriegl

2023

Organic Materials

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A series of PTAA (poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] polymers were synthesized using a Ni(0) mediated Yamamoto coupling. Polymers with different molecular weights and only one series of well-defined end groups were obtained with various amounts of a tailormade endcapper. This level of structural uniformity has not yet been described for PTAA. By using microwave heating it was possible to shorten the reaction time from at least one day to 30 minutes. The synthetic strategy allows the separation of single PTAA oligomers with up to 6 repeating units and polymer fractions with low dispersities from 1.06 to 1.17 by using preparative size exclusion chromatography (SEC). The carrier mobilities of the PTAA oligomers and polymers were derived from organic field effect transistors (OFETs). Mobilities increase with increasing molecular weight of the PTAAs and are higher compared to commercially available PTAA samples.

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Section: Introductionmentioning

confidence: 99%

Microwave-Assisted Synthesis of Poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA) with Well-Defined End Groups and Narrow Dispersity

Beck,

Strohriegl

2023

Organic Materials

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ChemInform Abstract: Cynotophyllosides K—L from the Roots of Cynanchum otophyllum.

Abstract: Two new steroidal glycosides, cynotophyllosides K (I) and L (II), are isolated from the roots of Cynanchum otophyllum together with three known steroids.

Cited by 1 publication

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Microwave-Assisted Synthesis of Poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA) with Well-Defined End Groups and Narrow Dispersity

Microwave-Assisted Synthesis of Poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA) with Well-Defined End Groups and Narrow Dispersity

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