Preparation of thermostable and electric‐conducting poly(2,5‐thienylene)

Yamamoto, Takakazu; Sanechika, Kenichi; Yamamoto, Akio

doi:10.1002/pol.1980.130180103

Cited by 438 publications

(172 citation statements)

References 18 publications

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“…Bithiophenes was synthesized as early as 1890s [84] but synthesis of polythiophenes was not reported until 1980´s [85]. Today it is possible to synthesize thiophene probes with a well-defined length, oligothiophenes.…”

Section: Methodology Probe Synthesismentioning

confidence: 99%

Poly-and oligothiophenes : Optical probes for multimodal fluorescent assessment of biological processes

Magnusson¹

2015

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IICover: Fibroblasts and melanoma cells stained with a fluorescent thiophene probe called p-HTIm, DAPI and antibodies against ER, proteasomes, α-tubulin, fibronectin, or mitotracker against mitochondria.During the course of the research underlying this thesis, Karin Magnusson was enrolled in Forum Scientium, a multidisciplinary doctoral program at Linköping University, Sweden. ABSTRACTOne interesting class of molecules in the research field of imaging biological processes is luminescent conjugated polythiophenes, LCPs. These fluorescent probes have a flexible backbone consisting of repetitive thiophene units. Due to this backbone, the probes possess unique abilities to give rise to different spectral signatures depending on their target and environment. LCPs are a polydispersed material meaning there is an uneven distribution of lengths of the probe. Recently, monodispersed chemically well-defined material denoted luminescent conjugated oligothiophenes, LCOs, with an exact number of repetitive units and distinct sidechain functionalities along the backbone has been developed. LCOs have the advantages of being smaller which leads to higher ability to cross the blood brain barrier. The synthesis of minor chemical alterations is also more simplified due to the well-defined materials. During my doctoral studies I have used both LCPs and LCOs to study biological processes such as conformational variation of protein aggregates in prion diseases and cellular uptake in normal cells and cancer cells. The research has generally been based on the probes capability to emit light upon irradiation and the interaction with their targets has mainly been assessed through variations in fluorescence intensity, emission-and excitation profiles and fluorescence lifetime decay. These studies verified the utility of LCPs and LCOs for staining and discrimination of both prion strains and cell phenotypes. The results also demonstrated the pronounced influence minor chemical modifications have on the LCO´s staining capacity. IV POPULÄRVETENSKAPLIG SAMMANFATTNING LYSANDE MOLEKYLER FÖR STUDIER AV BIOLOGISKA PROCESSERLuminiscenta konjugerade polytiofener, LCPs, är en väldigt intressant typ av molekyl som kan användas för att studera processer i biologiska system. Strukturen hos dessa fluorescerande molekyler kan liknas vid olika element som är fästa vid en ryggrad. De olika elementen ger molekylen dess affinitet för sin målmolekyl, medan ryggraden är mest ansvarig för molekylens optiska egenskaper. Ryggraden ändrar sin struktur beroende på målmolekylen och resultatet kan avläsas med ett flertal fluorescens-metoder. Längden på ryggraden hos LCPs varierar och varje parti av en LCP består därmed av en blandning längder och storlekar. De senaste åren har Peter Nilssons forskargrupp utvecklat LCPs till molekyler med väldefinierad längd på ryggraden som då betecknas luminiscenta konjugerade oligotiofener, LCOs. Dessa mindre molekyler har större möjlighet att passera blodhjärnbarriären samt att syntesen för små kemiska modifieringar av elementen ...

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Section: Methodology Probe Synthesismentioning

confidence: 99%

Poly-and oligothiophenes : Optical probes for multimodal fluorescent assessment of biological processes

Magnusson¹

2015

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“…Its homopolymer, polythiophene (PT), was first reported in 1980s as a 1D-linear conjugated system (Yamamoto et al, 1980;Lin & Dudek, 1980). Substitution by solubilizing moieties is adopted to increase the solubility of polythiophenes.…”

Section: Thiophenementioning

confidence: 99%

Conjugated Polymers for Organic Solar Cells

Ye¹

2011

Solar Cells - New Aspects and Solutions

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“…68 On the downside, these structural features render the polymers insoluble in organic solvents, making it difficult to process them into thinfilms that are required for solar cell applications. 69,70 One of the most common way to counter solubility and processability issues is to incorporate suitable alkyl or alkoxy side chains into the polymer backbone. 71 However, as the sides chains are not photoactive, careful attention must be played while choosing them to avoid significant loss of photoactive real estate.…”

Section: Effect Of Polymer Side Chainmentioning

confidence: 99%

Incremental optimization in donor polymers for bulk heterojunction organic solar cells exhibiting high performance

Mayukh

Jung

et al. 2012

J Polym Sci B Polym Phys

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The power conversion efficiency of an organic solar cell has now exceeded the 10% mark, which is a significant improvement in the last decade. This has been made possible due to the development of low-band-gap polymers with tunable electron affinity, ionization potential, solubility, and miscibility with the fullerene acceptor, and the improved understanding of the factors affecting the critical device parameters such as the V OC and the J SC . This review examines the latest strategies, results, and trends that have evolved in the design of solar cells with better efficiency and durability.

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Preparation of thermostable and electric‐conducting poly(2,5‐thienylene)

Cited by 438 publications

References 18 publications

Poly-and oligothiophenes : Optical probes for multimodal fluorescent assessment of biological processes

Poly-and oligothiophenes : Optical probes for multimodal fluorescent assessment of biological processes

Conjugated Polymers for Organic Solar Cells

Incremental optimization in donor polymers for bulk heterojunction organic solar cells exhibiting high performance

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