Simulation of the primary process in photosynthetic reaction centre by monolayer with charge separation triad and antenna molecules

Fujihira, Masamichi; Sakomura, Masaru; Kamei, Takahiro

doi:10.1016/0040-6090(89)90052-7

Cited by 57 publications

(18 citation statements)

References 9 publications

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“…To our knowledge, however, its application to macromolecule analyses was restricted to two studies, each involving Langmuir-Blodgett films: (i) a simulation model for the antenna and sensitizer molecules in photosynthetic reaction (24) and (ii) probes for membrane dynamics (25).…”

Section: Discussionmentioning

confidence: 99%

Fluorescence resonance energy transfer from pyrene to perylene labels for nucleic acid hybridization assays under homogeneous solution conditions

Masuko

Ohuchi²,

Sode³

et al. 2000

Nucleic Acids Research

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We characterized the fluorescence resonance energy transfer (FRET) from pyrene (donor) to perylene (acceptor) for nucleic acid assays under homogeneous solution conditions. We used the hybridization between a target 32mer and its complementary two sequential 16mer deoxyribonucleotides whose neighboring terminals were each respectively labeled with a pyrene and a perylene residue. A transfer efficiency of~100% was attained upon the hybridization when observing perylene fluorescence at 459 nm with 347-nm excitation of a pyrene absorption peak. The Förster distance between two dye residues was 22.3 Å (the orientation factor of 2/3). We could change the distance between the residues by inserting various numbers of nucleotides into the center of the target, thus creating a gap between the dye residues on a hybrid. Assuming that the number of inserted nucleotides is proportional to the distance between the dye residues, the energy transfer efficiency versus number of inserted nucleotides strictly obeyed the Förster theory. The mean inter-nucleotide distance of the single-stranded portion was estimated to be 2

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Section: Discussionmentioning

confidence: 99%

Fluorescence resonance energy transfer from pyrene to perylene labels for nucleic acid hybridization assays under homogeneous solution conditions

Masuko

Ohuchi²,

Sode³

et al. 2000

Nucleic Acids Research

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“…Several groups have fabricated molecular photodiodes using hetero-deposited LB films. [63][64][65][66][67] We fabricated polymer nano-sheet photodiodes by a hetero-deposition of polymer nano-sheet containing ruthenium complex and ferrocene respectively ( Figure 16). [68][69][70][71] Ru(bpy) 3 2þ is a redox active group photosensitized with strong absorption in the visible light region and has been intensively investigated with respect to electrochemistry, electrochemiluminescence, photoinduced electron transfer quenching, and photocurrent generation, in solutions, micelles, cast films, and LB films.…”

Section: Molecular Logic Gates By Polymer Nano-sheets Assembliesmentioning

confidence: 99%

Functional Organized Molecular Assemblies Based on Polymer Nano-sheets

Mitsuishi

Matsui

Miyashita

2006

Polym J

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ABSTRACT:This review describes recent topics on functional organized molecular assemblies based on ''polymer nano-sheet''. Polymer nano-sheets consisting of amphiphilic poly(alkylacrylamide)s are described as ultrathin polymer Langmuir-Blodgett films through two-dimensional hydrogen networks between polymer backbones, which have been developed to assemble various functional molecules and nanomaterials such as metal and magnetic nanoparticles. Surface modification and nanocoating using fluorinated polymer nano-sheets in confined area are given. Multicolored patterns based on structured color and photopatterning derived from nanostructures are demonstrated. The scope of polymer nano-sheets concerning the bottom-up soft nanodevice is also reviewed. [doi:10.1295/polymj.PJ2006069] KEY WORDS Polymer / Langmuir-Blodgett / Nano-sheet / Thin Film / Acrylamide / Bottom-up approaches for constructing ordered nanoscale structures in organic molecular assemblies are of interest and various techniques for preparation of organic ultrathin films have been extensively studied. Organic thin films are attractive materials for processability, ease of functionalization, light weight, and flexibility. However processing technology on a nanoscale is immature and continuous development is required. Various organic films, for example, a spincoated film, self-assembled monolayers (SAM), 1 polymer brushes, and layer-by-layer alternative adsorption via electrostatic interactions, 2 have been investigated. We have tried to prepare various polymer ultrathin films with the Langmuir-Blodgett (LB) technique. [3][4][5][6] It has been found that N-alkylacrylamide polymer shows highly oriented and well ordered monolayer at the air/water interface. Two-dimensional network of the polymer chains via hydrogen bonding interaction of amide groups on the water surface gives a stable and condensed polymer monolayer (Figure 1). A wide variety of functional molecules were incorporated in the monolayer through copolymerization method 7 and polyion complex method etc. The advantages of the polymer nano-sheet are (1) thermal and mechanical stability, (2) uniform distribution of functional molecules, and (3) ultrathin films at the nanometer scale ranged from 1.0 nm to 2.0 nm and (4) versatile molecular building blocks. Various functional polymer nano-sheets allow fabrication of soft nanodevices based on their integrated assemblies. This review shows the definition and fascinating features of polymer nano-sheets at the first session and describes recent topics of polymer nanoarchitecture based on polymer nano-sheets; fluorination of polymer nanosheets, structured color by three-dimensional nanoassemblies, conductive polymer nano-sheets and molecular logic gates driven by photo-excitation. Hybrid nanomaterials consisting of polymer nano-sheets and metal nanoparticles are also demonstrated for efficient localized surface plasmon resonance utilization. POLYMER NANO-SHEETS BY LANGMUIR-BLODGETT TECHNIQUEThe Langmuir-Blodgett (LB) technique is a powerful means for pre...

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“…So far, many attempts have been made to realize the artificial highly efficient photoenergy conversion systems by using molecular arrays [3][4][5][6][7][8][9][10], dendrimer [11,12], self-assembled monolayers (SAM) [13,14], and LB films [15][16][17][18][19][20][21][22][23][24][25]. Among these systems, the LB film is a promising candidate because of its well-defined nanostructure and wide choice of suitable chemicals from a huge number of organic materials.…”

Section: Introductionmentioning

confidence: 99%

Spectroscopic and optical characterization of porphyrin chromophores incorporated into ultrathin polyimide films

Ogi

Kinoshita

Ito

2005

Journal of Colloid and Interface Science

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Simulation of the primary process in photosynthetic reaction centre by monolayer with charge separation triad and antenna molecules

Cited by 57 publications

References 9 publications

Fluorescence resonance energy transfer from pyrene to perylene labels for nucleic acid hybridization assays under homogeneous solution conditions

Fluorescence resonance energy transfer from pyrene to perylene labels for nucleic acid hybridization assays under homogeneous solution conditions

Functional Organized Molecular Assemblies Based on Polymer Nano-sheets

Spectroscopic and optical characterization of porphyrin chromophores incorporated into ultrathin polyimide films

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