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Subject: search.filters.subject.Hydrogen bonding

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Now showing 1 - 10 of 12
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    A Hydrogen Pyrophosphate Selective Anion Receptor Based on Thiosemicarbazone
    (2017-12-01)
    Pandian, Thiravidamani Senthil
    ;
    Srinivasadesikan, Venkatesan
    ;
    Lin, Ming-Chang
    ;
    Park, Jong I. L.
    ;
    Kang, Jongmin
    A novel rigid anion receptor 1 containing thiosemicarbazone groups were synthesized. Receptor 1 displayed competitive turn-off fluorescence and colorimetric response for hydrogen pyrophosphate. This recognition process was confirmed by UV-vis, fluorescence titrations. A detailed analysis of the TD-density functional theory calculations was consistent with the observed colorimetric experiments. These experiments revealed that the colorimetric and fluorescent response is triggered by thiourea/ HP2O73- hydrogen bonding.
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    超分子作用力在有機光電材料及奈米粒子之應用與研究
    (2008)
    林宏洲
    ;
    LIN HONG-CHEU
    ;
    國立交通大學材料科學與工程學系(所)
    超分子作用力包含氫鍵與離子力可以被應用於具光電性質之有機及奈米粒子材料 等不同應用方向。有機、高分子、及奈米粒子間互補性成份之超分子作用力將具有光電 及光學性質之重要影響力。在有機材料結構中或其與奈米粒子間擁有超分子作用力的生 物感測、化學感測、太陽能電池、發光、及液晶材料將會特別被關注及研究。氫鍵與離 子力對這些超分子材料及超分子奈米複合材料(含奈米粒子)之前述光電或光學性質的效 應將會在此計畫中被探討。
  • Thumbnail Image
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    超分子作用力在有機光電材料及奈米粒子之應用與研究
    (2009)
    林宏洲
    ;
    LIN HONG-CHEU
    ;
    國立交通大學材料科學與工程學系(所)
    超分子作用力包含氫鍵與離子力可以被應用於具光電性質之有機及奈米粒子材料 等不同應用方向。有機、高分子、及奈米粒子間互補性成份之超分子作用力將具有光電 及光學性質之重要影響力。在有機材料結構中或其與奈米粒子間擁有超分子作用力的生 物感測、化學感測、太陽能電池、發光、及液晶材料將會特別被關注及研究。氫鍵與離 子力對這些超分子材料及超分子奈米複合材料(含奈米粒子)之前述光電或光學性質的效 應將會在此計畫中被探討。
  • Thumbnail Image
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    超分子結構在有機光電材料及奈米粒子之合成與應用
    (2010)
    林宏洲
    ;
    LIN HONG-CHEU
    ;
    國立交通大學材料科學與工程學系（所）
    超分子作用力包含氫鍵、金屬鍵、與離子力可以被應用於具光電性質之有機及奈米 粒子材料等不同應用方向。有機、高分子、及奈米粒子間互補性成份之超分子作用力將 具有光電及光學性質之重要影響力。在有機材料結構中或其與奈米粒子間擁有超分子作 用力的化學生物感測、太陽能電池、及液晶材料將會特別被關注及研究。氫鍵、金屬鍵、 與離子力對這些超分子材料及超分子奈米複合材料(含奈米粒子)之前述光電或光學性質 的效應將會在此計畫中被探討。
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    超分子材料及自組裝奈米複合物之合成與研究
    (2012)
    林宏洲
    ;
    LIN HONG-CHEU
    ;
    國立交通大學材料科學與工程學系（所）
    本計畫主要將運用超分子作用力(即氫鍵)於具光電性質之有機及奈米粒子材料等不 同方向。有機、高分子、及奈米粒子間互補性成份之超分子作用力將具有光電及光學性 質之重要影響力。在有機材料結構中或其與奈米粒子(或奈米棒)間擁有超分子作用力的 化學生物感測、太陽能電池、及液晶材料將會特別被關注及研究。氫鍵對這些超分子材 料及超分子奈米複合材料(含奈米粒子或奈米棒)之前述光電或光學性質的效應將會被完 整的探討並發展為未來軟性光電及電子元件之應用。
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    超分子材料及自組裝奈米複合物之合成與研究
    (2013)
    林宏洲
    ;
    LIN HONG-CHEU
    ;
    國立交通大學材料科學與工程學系（所）
    本計畫主要將運用超分子作用力(即氫鍵)於具光電性質之有機及奈米粒子材料等不 同方向。有機、高分子、及奈米粒子間互補性成份之超分子作用力將具有光電及光學性 質之重要影響力。在有機材料結構中或其與奈米粒子(或奈米棒)間擁有超分子作用力的 化學生物感測、太陽能電池、及液晶材料將會特別被關注及研究。氫鍵對這些超分子材 料及超分子奈米複合材料(含奈米粒子或奈米棒)之前述光電或光學性質的效應將會被完 整的探討並發展為未來軟性光電及電子元件之應用。
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    Self-assembly of an A-B diblock copolymer blended with a C homopolymer and a C-D diblock copolymer through hydrogen bonding interaction
    (2010-08-19)
    Chen, Wan-Chun
    ;
    Kuo, Shiao-Wei
    ;
    Chang, Feng-Chih
    ;
    應用化學系
    ;
    Department of Applied Chemistry
    In this study, we investigated the miscibility, phase behavior, and self-assembled nanostructures formed from the immiscible crystalline-amorphous diblock copolymer poly(epsilon-caprolactone-b-4-vinyl pyridine) (PCL-b-P4VP, A-B) when blended with the homopolymer poly(vinyl phenol) (PVPh, C) and the diblock copolymer poly(vinyl phenol-b-styrene) (PVPh-b-PS, C-D). Long-range-ordered microphase separation was difficult to achieve in the PCL-b-P4VP/PVPh (A-B/C) blend system because PVPh interacted with both the P4VP and PCL blocks simultaneously through hydrogen bonding interactions. In contrast, we observed sharp, multiple orders of diffraction in the SAXS profiles of the PCL-b-P4VP/PVPh-b-PS (A-B/C D) blend system, indicating that perfect microphase separation occurred because the incorporation of the PS block induced the PVPh block to hydrogen bond preferentially with the P4VP block. This simple A-B/C-D (PCL-b-P4VP/PVPh-b-PS) diblock copolymer mixture exhibited self-assembly behavior (a three-lamella phase) similar to that of a corresponding ABC triblock copolymer. (C) 2010 Elsevier Ltd. All rights reserved.
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    Photo-polymerization of photocurable resins containing polyhedral oligomeric silsesquioxane methacrylate
    (2011-12-15)
    Lin, Ho-May
    ;
    Wu, Shi-Yin
    ;
    Chang, Feng-Chih
    ;
    Yen, Ying-Chieh
    ;
    應用化學系
    Photocurable resins, bisphenol A propoxylate glycerolate diacrylate (BPA-PGDA, containing two hydroxyl) and bisphenol A propoxylate diacrylate (BPA-PDA), with fixed photoinitiator (Irgacure 907) concentration and various contents of methacrylisobutyl polyhedral oligomeric silsesquioxane (MI-POSS) were prepared and characterized by FTIR spectroscopy, scanning electron microscope and differential photocalorimetry. The MI-POSS molecules form crystals or aggregated particles in the cured resin matrix. The BPA-PGDA series photocurable resins show higher viscosity and lower photo-polymerization reactivity than the BPA-PDA series resins. The photo-polymerization rate and conversion of BPA-PGDA series are improved with increasing MI-POSS content. On the contrary, the photo-polymerization behavior of BPA-PDA series photocurable resins remains nearly unchanged by the addition of MI-POSS. Hydrogen-bonding interaction between the hydroxyl of BPA-PGDA and the siloxane of MI-POSS tends to attract and concentrate these acrylate double bonds around MI-POSS particles and thus enhances the photo-polymerization rate and conversion. (C) 2011 Elsevier B.V. All rights reserved.
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    Substituent-induced delocalization effects on hydrogen-bonding interaction in poly(N-phenyl methacrylamide) derivatives
    (2011-05-26)
    Kuo, Shiao-Wei
    ;
    Lin, Chien-Ting
    ;
    Chen, Jem-Kun
    ;
    Ko, Fu-Hsiang
    ;
    Chang, Feng-Chih
    Within small molecules, the hydrogen-bonding behaviors affected by delocalization have been studied thoroughly, but rare publication in macromolecules. Therefore, three poly(N-phenyl methacrylamide)s, poly(N-phenyl methacrylamide) (PNPAA), poly(N-4-methoxyphenyl methacrylamide) (PMPMA) and poly(N-4-bromophenyl methacrylamide) (PBPMA), with different inductive substitution at para position of benzene ring are prepared to investigate the substituent-induced delocalization effects on the hydrogen-bonding interaction behaviors. In this study, the variable-temperature FTIR spectrum is used as tool to study the self- and inter-association hydrogen-bonding interaction. FTIR analyses could provide evidences that there is relatively stronger inter-associative hydrogen bonding in poly(N-4-bromophenyl methacrylamide)/P4VP blends. High resolution (13)C CP/MAS solid-state NMR analyses indicate that the spin-lattice relaxation time (T) in all PBPMA blends are homogeneous on the scale at which spin-diffusion occurs within the time T(1)rho(H), also due to the enhancement by substituent inductive delocalization. (C) 2011 Elsevier Ltd. All rights reserved.
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    Hydrogen bond mediated supramolecular micellization of diblock copolymer mixture in common solvents
    (2009-07-01)
    Kuo, Shiao-Wei
    ;
    Tung, Pao-Hsaing
    ;
    Chang, Feng-Chih
    ;
    應用化學系
    ;
    Department of Applied Chemistry
    We report a new approach toward preparing self-assembled hydrogen-bonded complexes having vesicle and patched spherical structures from two species of block copolymers in nonselective solvents. Two diblock copolymers, poly(styrene-b-vinyl phenol) (PS-b-PvPh) and poly(methyl methacrylate-b-4-vinylpyridine) (PMMA-b-P4VP), were synthesized through anionic polymerization. The assembly of vesicles from the intermolecular complex formed after mixing PS-b-PVPH with PMMA-b-P4VP in THF was driven by strong hydrogen bonding between the complementary binding sites on the PVPH and P4VP blocks. In contrast, well-defined patched spherical micelles formed after blending PS-b-PVPh with PMMA-b-P4VP in DMF: the weaker hydrogen bonds formed between the PVPh and P4VP blocks in DMF, relative to those in THF, resulted in the formation of spherical micelles having compartmentalized coronas consisting of PS and PMMA blocks. (C) 2009 Elsevier Ltd. All rights reserved.