Synthesis and assembly of anisotropic nanoparticles

Lee, Gaehang; Cho, Young-Sang; Park, Sungkyun; Yi, Gi‐Ra

doi:10.1007/s11814-011-0183-5

Cited by 26 publications

(17 citation statements)

References 96 publications

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“…This value is less sensitive than other oligonucleotide microarrays based on 16S rRNA information for bacterial identification, with detection limits approximating 2.5 to 5.0 fM (39). For more sensitive detection, it might be necessary to employ signal improvement strategies, such as nanoparticle labeling (40,41).…”

Section: Newport B Cereus C Perfringens Listeria Monocytogenes mentioning

confidence: 99%

Specific Discrimination of Three Pathogenic Salmonella enterica subsp. enterica Serotypes by carB -Based Oligonucleotide Microarray

Shin

Hwang

Seo

et al. 2014

Appl Environ Microbiol

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It is important to rapidly and selectively detect and analyze pathogenic Salmonella enterica subsp. enterica in contaminated food to reduce the morbidity and mortality of Salmonella infection and to guarantee food safety. In the present work, we developed an oligonucleotide microarray containing duplicate specific capture probes based on the carB gene, which encodes the carbamoyl phosphate synthetase large subunit, as a competent biomarker evaluated by genetic analysis to selectively and efficiently detect and discriminate three S. enterica subsp. enterica serotypes: Choleraesuis, Enteritidis, and Typhimurium. Using the developed microarray system, three serotype targets were successfully analyzed in a range as low as 1.6 to 3.1 nM and were specifically discriminated from each other without nonspecific signals. In addition, the constructed microarray did not have cross-reactivity with other common pathogenic bacteria and even enabled the clear discrimination of the target Salmonella serotype from a bacterial mixture. Therefore, these results demonstrated that our novel carB-based oligonucleotide microarray can be used as an effective and specific detection system for S. enterica subsp. enterica serotypes.

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Section: Newport B Cereus C Perfringens Listeria Monocytogenes mentioning

confidence: 99%

Specific Discrimination of Three Pathogenic Salmonella enterica subsp. enterica Serotypes by carB -Based Oligonucleotide Microarray

Shin

Hwang

Seo

et al. 2014

Appl Environ Microbiol

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“…전자소자의 집적화 및 소형화를 위하여 다양한 소재의 소형화가 큰 이슈로 자리 잡고 있으며, 이를 이용한 나노 전자 소자 (nanoelectronics) 에 관한 연구가 활발히 진행 중이다 [2][3][4]. 특히, 반 도체 물질 기반의 나노와이어의 경우 큰 표면적을 이용해 소자의 효 율성을 증대시키고 고집적을 가능하게 하여, 태양전지, 센서, 트렌지 스터 등 다양한 분야에서 우수한 성능을 보고하고 있다 [5,6].…”

Section: 서 론unclassified

Fabrication and Characterization of Conjugated Polymer Nanowires with Uniformed Size

Khim¹,

Kim²,

Noh

2014

Korean Chemical Engineering Research

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요 약본 논문에서는 유기전자소자의 반도체 물질로 많이 사용되는 poly(9,9-dioctylflurorene) (PFO), poly(9,9-dioctylfluoreneco-benthiadiazole) (F8BT), (regioregular poly(3-hexylthiophene) (P3HT)를 기반으로 하는 균일한 크기와 특성을 가지는 고분자 나노와이어를 AAO 템플레이트를 이용하여 대량으로 제작하였다. 제작된 나노와이어는 결점이 없이 깨끗한 표 면을 보였으며, 약 250~300 nm의 지름과 ~30 µm의 일정한 길이를 가지고 있었다. 나노와이어들은 스프레이 분사 방 법을 통하여 유리 기판 위에 균일하게 분사할 수 있었으며, PFO와 F8BT 나노와이어의 경우 UV 빛의 조사하에 각각 나노와이어의 전체에 걸쳐서 왜곡없이 밝은 yellow와 blue luminescence를 보였다.Abstract − Here, we reported mass-produced organic nanowires with uniform sizes based on poly(9,9-dioctylflurorene) (PFO), poly(9,9-dioctylfluorene-co-benzothiadiazole) (F8BT), (regioregular poly(3-hexylthiophene) (P3HT) which are well known as organic semiconductors for opto/electronics applications, using a melt-assisted wetting method with anodic alumina membrane. The conjugated polymer nanowires showed uniformed diameters (D=250~300 nm) and lengths (L =~30 µm) with defect free smooth surface regardless of a kinds of semiconductors. In addition, the nanowires were uniformly deposited onto glass substrates by spray-coating method. Under the UV light irradiation, PFO and F8BT nanowires showed blue and yellow emissions, respectively.

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“…In order to circumvent this limitation, we recently developed a new synthetic approach to triphenylphosphorane ylides (6a, 2a) utilizing a new Horner-WadsworthEmmons (HWE) 10 reagent 5a as the key reagent (Scheme 2, Z = -CN). 11 In continuation of our study in this area of chemistry, 9c,9e,11,12 we have done a thorough study of this new approach by using different bases/various carbonyl compounds, and also extended the same approach for the synthesis of triphenylphosphorane ylide precursors (6b, 2b) to vicinal tricarbonyl unit (Scheme 2, Z = -CO 2 t-Bu). Herein, we wish to report the details of this new study and data of the reaction products.…”

Section: Introductionmentioning

confidence: 99%

A New Synthesis of Triphenylphosphorane Ylide Precursors to α-Keto Amide/Ester and Tricarbonyl Units via Horner-Wadsworth-Emmons Reaction

Lee¹

2010

Bulletin of the Korean Chemical Society

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Newly developed Horner-Wadsworth-Emmons (HWE) reagents 5 having triphenylphosphorane ylide subunits readily condensed with various carbonyl compounds under mild reaction conditions to afford β,γ-unsaturated α-keto triphenylphorane ylides in good to excellent yields, which were hydrogenated over Pd-C (10%)/H2 (1 atm) to give the corresponding α-keto triphenylphorane ylides in quasi-quantitative yields. These triphenyphosphorane ylides have been utilized as the precursors to α-keto amide/ester and vicinal tricarbonyl units in Wasserman's synthetic protocols, and have previously been prepared only from carboxylic acids/acid chlorides. Our new approaches provide excellent alternatives for the synthesis of triphenylphosphorane ylide precursors to α-keto amide/ester and vicinal tricarbonyl units directly from carbonyl compounds in good to excellent yields.Key Words: α-Keto amide, α-Keto ester, Vicinal tricarbonyl, Triphenylphosphorane ylide, Horner-WadsworthEmmons reaction4 (Z= -CO 2 t-Bu) Oxidants Scheme 1. Wasserman's synthetic route for α-keto amide/ester and tricarbonyl units

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Synthesis and assembly of anisotropic nanoparticles

Cited by 26 publications

References 96 publications

Specific Discrimination of Three Pathogenic Salmonella enterica subsp. enterica Serotypes by carB -Based Oligonucleotide Microarray

Specific Discrimination of Three Pathogenic Salmonella enterica subsp. enterica Serotypes by carB -Based Oligonucleotide Microarray

Fabrication and Characterization of Conjugated Polymer Nanowires with Uniformed Size

A New Synthesis of Triphenylphosphorane Ylide Precursors to α-Keto Amide/Ester and Tricarbonyl Units via Horner-Wadsworth-Emmons Reaction

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