• 제목/요약/키워드: Functional Synthesis

검색결과 900건 처리시간 0.024초

A New Quinoline-Based Acylhydrazone for Highly Selective Fluorescence Recognition of Cu(II) and Sulfide in Aqueous Solution

  • Tang, Lijun;Zhou, Pei;Qi, Zhikai;Huang, Zhenlong;Zhao, Jia;Cai, Mingjun
    • Bulletin of the Korean Chemical Society
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    • 제34권8호
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    • pp.2256-2260
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    • 2013
  • A new quinoline-based acylhydrazone (1) has been synthesized and applied as a fluorescent probe. Probe 1 exhibits high selectivity and sensitivity to $Cu^{2+}$ with fluorescence "ON-OFF" behavior in HEPES buffered (1‰ DMSO, HEPES 20 mM, pH = 7.4) solution. The on-site generated 1-$Cu^{2+}$ complex displays excellent selectivity to sulfide ions with fluorescence "OFF-ON" performance through copper displacement approach.

의사-제어된 NCV 게이트로 실현된 매크로 양자회로의 새로운 함수 합성법 (A New Functional Synthesis Method for Macro Quantum Circuits Realized in Affine-Controlled NCV-Gates)

  • 박동영;정연만
    • 한국전자통신학회논문지
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    • 제9권4호
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    • pp.447-454
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    • 2014
  • 최근에 양자회로 합성과 관련한 대부분의 방법들은 컴퓨터 시뮬레이션에 적합한 서술적 표현 구조를 채택하고 있어 합성된 양자함수들에 대한 분석이 어렵다. 본 논문에서는 구조가 단순하고 직관적 사고가 가능한 양자회로의 새로운 함수표현법을 제안한다. 본 논문 제안사항은 타깃라인상의 유니터리 연산자들의 직렬 적 행렬연산을 멱함수의 산술연산과 modulo 2 연산이란 수학적 치환을 통해 유니터리 연산자의 제어입력을 자신의 멱함수로 합성하는 새로운 함수합성에 있다. 본 논문의 함수합성 알고리듬은 의사-제어된 NCV-양자게이트를 이용한 가역 및 비가역 양자회로들의 함수표현과 새로운 함수합성에 유용하다.

A Quinoline-thiooxorhodamine Conjugate for Fluorescent Hg2+ Recognition in Aqueous Media and Living Cells

  • Tang, Lijun;Wen, Xin;Dai, Xin;Wu, Di;Huang, Zhenlong
    • Bulletin of the Korean Chemical Society
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    • 제35권11호
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    • pp.3326-3330
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    • 2014
  • A quinoline-thiooxorhodamine conjugate fluorescent sensor (1) has been synthesized. Sensor 1 exhibits high selectivity and sensitivity to $Hg^{2+}$ in $H_2O$/DMSO (95/5, v/v, HEPES 20 mM, pH = 7.4) solution with fluorescence detection. Other tested metal ions do not induce any significant fluorescence intensity changes. Sensor 1 interacts with $Hg^{2+}$ through a 1:1 binding stoichiometry with a good anti-inference ability. In addition, fluorescent imaging of $Hg^{2+}$ in Hela cells is also successfully demonstrated.

A Simple Carbazole-based Schiff Base as Fluorescence "off-on" Probe for Highly Selective Recognition of Cu2+ in Aqueous Solution

  • Tang, Lijun;Wu, Di;Hou, Shuhua;Wen, Xin;Dai, Xin
    • Bulletin of the Korean Chemical Society
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    • 제35권8호
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    • pp.2326-2330
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    • 2014
  • A carbazole-based Schiff base CB2 was synthesized and applied as a highly selective and sensitive fluorescent probe for $Cu^{2+}$ in $H_2O$-DMSO (8/2, v/v, pH = 7.4) solution. CB2 exhibits an excellent selectivity to $Cu^{2+}$ over other examined metal ions with a prominent fluorescence "turn-on" at 475 nm. CB2 and $Cu^{2+}$ forms a 1:2 binding ratio complex with detection limit of $9.5{\mu}M$. In addition, the $Cu^{2+}$ recognition process is hardly interfered by other examined metal ions.

A Simple Benzimidazole Based Fluorescent Sensor for Ratiometric Recognition of Zn2+ in Water

  • Zhong, Keli;Cai, Mingjun;Hou, Shuhua;Bian, Yanjiang;Tang, Lijun
    • Bulletin of the Korean Chemical Society
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    • 제35권2호
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    • pp.489-493
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    • 2014
  • A phenylbenzimidazole derivatized sensor (L) that behaves as a ratiometric fluorescent receptor for $Zn^{2+}$ in water has been described. In HEPES buffer at pH 7.4, sensor L displays a weak fluorescence emission band at 367 nm. Upon addition of $Zn^{2+}$, the emission intensity at 367 nm is decreased, concomitantly, a new emission band centered at 426 nm is developed, thus facilitates a ratiometric $Zn^{2+}$ sensing behavior. Sensor L binds $Zn^{2+}$ through a 1:1 binding stoichiometry with high selectivity over other metal cations. Sensor L displays a linear response to $Zn^{2+}$ concentration from 0 to $6.0{\times}10^{-5}M$, sensor L also exhibits high sensitivity to $Zn^{2+}$ with a detection limit of $3.31{\times}10^{-7}M$.

New Application of 2-(4-N-Phenyl-3-thiosemicarbazone)-8-hydroxyquinoline as a Sensor for Relay Recognition of Cu2+ and Sulfide in Aqueous Solution

  • Tang, Lijun;Zhou, Pei;Huang, Zhenlong;Zhao, Jia;Cai, Mingjun
    • Bulletin of the Korean Chemical Society
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    • 제34권10호
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    • pp.2905-2908
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    • 2013
  • Fluorescent and colorimetric recognition properties of 2-(4-N-phenyl-3-thiosemicarbazone)-8-hydroxyquinoline (1) in buffered aqueous solution (1% DMSO, HEPES 20 mM, pH = 7.4) have been examined. Sensor 1 displays highly selective and sensitive recognition to $Cu^{2+}$ with fluorescence "ON-OFF" performance. The in situ formed 1-$Cu^{2+}$ complex exhibits an excellent selectivity toward sulfide ions with fluorescence "OFF-ON" behavior via $Cu^{2+}$ displacement approach. Thus, relay recognition of $Cu^{2+}$ and sulfide by a known molecule 1 has been achieved.

Colorimetric and Fluorescent Recognition of Fluoride by a Binaphthol Thioureido Derivative

  • Tang, Lijun;Wang, Nannan;Guo, Jiaojiao
    • Bulletin of the Korean Chemical Society
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    • 제33권7호
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    • pp.2145-2148
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    • 2012
  • A new thiourea based receptor (1) was synthesized and applied to fluoride ion recognition in acetonitrile solution. Receptor 1 displayed dual changes in absorption and fluorescence emission intensities selectively for fluoride ions. The interaction of 1 with fluoride undergoes a deprotonation process that is confirmed by $^1H$ NMR titration.

Functional Polymers with Controlled Molecular Architecture: Design, Synthesis and Applications

  • Frechet Jean M.J.
    • 한국고분자학회:학술대회논문집
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    • 한국고분자학회 2006년도 IUPAC International Symposium on Advanced Polymers for Emerging Technologies
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    • pp.1-2
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    • 2006
  • Polymer architecture plays a great role in determining the properties of functional polymers. This lecture will explore the design and the synthesis of polymers with controlled architecture and functionality. Especially featured will be star and dendritic architectures where the functional group placement and the molecular shape can be controlled. This will be followed by examples of applications illustrated with a few model systems of functional polymers designed for use in areas such as organic electronics, catalysis, surface patterning, separation and molecular recognition, and polymer therapeutics.

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Facile Synthesis of the Uryl Pendant Binaphthol Aldehyde and Its Selective Fluorescent Recognition of Tryptophan

  • Tang, Lijun;Wei, Gongfan;Nandhakumar, Raju;Guo, Zhilong
    • Bulletin of the Korean Chemical Society
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    • 제32권9호
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    • pp.3367-3371
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    • 2011
  • An easy and convenient synthetic route to (S)-2-hydroxy-2'-(3-phenyluryl-benzyl)-1,1'-binaphthyl-3-carboxaldehyde (1), capable of recognizing tryptophan by fluorescence has been developed. The binol carboxaldehyde 1 exhibited a high selectivity to L-tryptophan over other examined L-${\alpha}$-amino acids such as alanine, phenylalanine, glutamine, arginine, lysine, serine, threonine, aspartat, valine, histidine and cysteine, with a fluorescence "turn-on" signal. In addition, 1 displayed chiral discrimination with good enantioselectivity toward L-tryptophan over D-tryptophan through different fluorescence enhancement factors.

제품개발 초기단계의 생산공정설계를 위한 기계부품의 외형형상 합성에 관한 연구 (A Study on Part Configuration Shape Synthesis for Process Planning in the Early Design Stage)

  • 임진승;김용세;에릭왕
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2003년도 춘계학술대회 논문집
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    • pp.899-904
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    • 2003
  • Tight integration of product design and process planning in the early design stage would make bigger impact as wider spectrum of design and manufacturing alternatives can be pursued and evaluated. Thus the development of systematic computer-based support for this integration is desirable. For this integration and process planning in the early design stage. the systematic method to synthesize shape of part from functional requirements is crucial. This research presents the methods of functional decomposition from overall function or product and synthesizing shape of part based on functional relations extracted from functional decomposition using planetary gear transmission system as an example.

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