Ambipolar organic phototransistors based on 6,6′-dibromoindigo

Kim, Hyoeun; Kim, Gyoungsik; Song, Inho; Lee, Jung-Ho; Abdullah, Hanum; Yang, Changduk; Oh, Joon Hak

doi:10.1039/c8ra02346h

Cited by 17 publications

(13 citation statements)

References 47 publications

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“…This kind of charge transfer mechanism by polymer:polymer bulk heterojunction concepts for OPTRs has been demonstrated in our previous work. 43 Therefore, the present OFETs with the blend (PIDTT-8OBT:PIDTT-NDI) channel layers work as an ambipolar OPTR that can detect the full range of visible light up to l = 750 nm (see recent reports on ambipolar OPTRs with a limited detection range or very high operation voltage [44][45][46][47] ).…”

Section: Resultsmentioning

confidence: 97%

Ambipolar organic phototransistors with bulk heterojunction films of p-type and n-type indacenodithienothiophene-containing conjugated polymers

et al. 2022

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We report ambipolar organic phototransistors with the polymeric sensing channel layers that consist of p-type and n-type indacenodithienothiophene (IDTT)-based conjugated polymers. The p-type IDTT-based polymer, poly(5,5,11,11-tetrakis(5-(2-ethylhexyl)thiophene-2-yl)-dithieno[2,3-d:2’3’-d’]-s-indaceno[1,2-b:5,6-b’]dithiophene-co-5,6-bis(octyloxy)benzo[c]-[1,2,5]thiadiazole) (PIDTT-80BT), was synthesized by...

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Section: Resultsmentioning

confidence: 97%

Ambipolar organic phototransistors with bulk heterojunction films of p-type and n-type indacenodithienothiophene-containing conjugated polymers

et al. 2022

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“…Beyond the biosynthesis of indigo and indirubin, there is increasing interest in the biocatalytic production of halogenated indigoids. For example, Tyrian purple (6,6′-dibromoindigo), the oldest known purple dye used in imperial clothes thousands of years ago, which is now being employed in semiconductor materials [ 37 ], requires 10,000 sea snails that are the natural source to produce merely 1 g of this indigoid [ 38 ]. Halogenations constitute a suitable leaving group to enable the synthesis of indigo copolymers used as semiconductor films [ 39 ].…”

Section: Resultsmentioning

confidence: 99%

Discovery of New Phenylacetone Monooxygenase Variants for the Development of Substituted Indigoids through Biocatalysis

Núñez-Navarro

Muñoz

Castillo

et al. 2022

IJMS

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Indigoids are natural pigments obtained from plants by ancient cultures. Romans used them mainly as dyes, whereas Asian cultures applied these compounds as treatment agents for several diseases. In the modern era, the chemical industry has made it possible to identify and develop synthetic routes to obtain them from petroleum derivatives. However, these processes require high temperatures and pressures and large amounts of solvents, acids, and alkali agents. Thus, enzyme engineering and the development of bacteria as whole-cell biocatalysts emerges as a promising green alternative to avoid the use of these hazardous materials and consequently prevent toxic waste generation. In this research, we obtained two novel variants of phenylacetone monooxygenase (PAMO) by iterative saturation mutagenesis. Heterologous expression of these two enzymes, called PAMOHPCD and PAMOHPED, in E. coli was serendipitously found to produce indigoids. These interesting results encourage us to characterize the thermal stability and enzyme kinetics of these new variants and to evaluate indigo and indirubin production in a whole-cell system by HPLC. The highest yields were obtained with PAMOHPCD supplemented with L-tryptophan, producing ~3000 mg/L indigo and ~130.0 mg/L indirubin. Additionally, both enzymes could oxidize and produce several indigo derivatives from substituted indoles, with PAMOHPCD being able to produce the well-known Tyrian purple. Our results indicate that the PAMO variants described herein have potential application in the textile, pharmaceutics, and semiconductors industries, prompting the use of environmentally friendly strategies to obtain a diverse variety of indigoids.

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“…Kim et al. [ 97 ] prepared BNNS/MWCNT hybrid filler for polyphenylene sulfide (PPS) and epoxy matrix. They proposed that the greater thermal conductivity of BNNS/MWCNT hybrid filler composite was because of the covalent connection which helped to develop a 3D path for heat conduction.…”

Section: Polymer Nanocomposites Based On Bnns Hybrid Fillersmentioning

confidence: 99%

Recent Advances in Boron Nitride Based Hybrid Polymer Nanocomposites

Aparna

Sethulekshmi

Jayan

et al. 2021

Macro Materials & Eng

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Boron nitride (BN) is an eminent inorganic compound having many interesting characteristics such as improved oxidation resistance, mechanical strength, good thermal conductivity (TC), higher bandgap, high chemical stability, thermal stability, high hydrophobicity, and electrical insulation. The use of BN as a filler in polymers is a well‐established strategy to tailor the properties of polymer composites. Recent studies depict an interesting urge to reap the synergistic effect of various nanofillers with BN in the form of hybrids. Hence the consolidation of the works on BN based hybrid fillers would definitely attract researchers so that these new filler systems could be transformed into useful polymer nanocomposites in future. This review article focuses on the synthesis and characterization of various boron nitride based hybrids in detail. Moreover, the review also throws light on different BN hybrid reinforced polymer nanocomposites (PNCs) and their thermal, electrical, electronic as well as biomedical applications in a detailed manner. Thus the review anticipates serving as a tool toward understanding the recent trends in the field of boron nitride hybrid based ternary polymer composites.

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Ambipolar organic phototransistors based on 6,6′-dibromoindigo

Abstract: Ambipolar phototransistors with a natural pigment, 6,6′-dibromoindigo (6-BrIG or tyrian purple), have been investigated.

Cited by 17 publications

References 47 publications

Ambipolar organic phototransistors with bulk heterojunction films of p-type and n-type indacenodithienothiophene-containing conjugated polymers

Ambipolar organic phototransistors with bulk heterojunction films of p-type and n-type indacenodithienothiophene-containing conjugated polymers

Discovery of New Phenylacetone Monooxygenase Variants for the Development of Substituted Indigoids through Biocatalysis

Recent Advances in Boron Nitride Based Hybrid Polymer Nanocomposites

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