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Article
Development of fluorescence sensors for quantifying anions based on polyhedral oligomeric silsesquioxane that contains flexible side chains with urea structures
Since anions play a significant role in various biological phenomena, develo** fluorescence anion sensors is important. Previously, we focused on polyhedral oligomeric silsesquioxane (POSS) as a three-dimens...
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Article
π-Conjugated polymers based on flexible heteroatom-containing complexes for precise control of optical functions
Controlling the optical properties of π-conjugated polymers is a relevant strategy to satisfy growing demands for the development of next-generation optoelectronic devices and luminescent materials. Generally,...
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Article
Frustrated element-blocks: A new platform for constructing unique stimuli-responsive luminescent materials
Element-blocks, the minimum heteroatom-containing functional units, are versatile building blocks for constructing functional polymers. In this focus review, we explain the new concept of develo** stimuli-re...
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Article
PPV-type π-conjugated polymers based on hypervalent tin(IV)-fused azobenzene complexes showing near-infrared absorption and emission
We demonstrate near-infrared (NIR) absorptive and emissive poly(p-phenylene vinylene) (PPV)-type π-conjugated polymers based on hypervalent tin-fused azobenzene (TAz) complexes. Taking advantage of the inherent n...
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Article
Positive Luminescent Sensor for Aerobic Conditions Based on Polyhedral Oligomeric Silsesquioxane Networks
There are numerous numbers of hypoxia-selective luminescent probes based on oxygen quenching of phosphorescence. We show a unique design for luminescent probes to detect hyperoxia utilizing hybrid networks con...
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Chapter
Molecular Designs for Solid-State Luminescent Properties and Recent Progresses on the Development of Functional Luminescent Solid Materials
Luminescent organic dyes are known to be an essential building block for develo** modern organic optoelectronic devices. In these devices, organic dyes are normally used as a film. However, most of the organ...
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Article
Modulation of the solid-state luminescent properties of conjugated polymers by changing the connecting points of flexible boron element blocks
Flexible molecules are unfavorable for designing luminescent dyes because their excitation states rapidly decay through molecular motions. We recently found that some flexible boron complexes, which potentiall...
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Article
Molecular fillers for increasing the refractive index of polystyrene hybrids by chain assembly at polyhedral oligomeric silsesquioxane
We developed a molecular filler based on polyhedral oligomeric silsesquioxane (POSS) containing halogenated aromatic substituents to increase the refractive indices (RIs) of polystyrene (PS). PS hybrid films w...
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Chapter
Rational Designs of AIE-Active Molecules and Luminochromic Materials Based on Group 13 Element-Containing Element-Blocks
There are numerous numbers of boron complexes having luminescent properties originating from rigid π-conjugated systems. However, similarly to other commodity chromophores, emissive boron complexes often suffe...
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Chapter
Element-Block Materials: New Concept for the Development of Advanced Hybrids and Inorganic Polymers
By incorporating highly functional inorganic units in organic materials, the creation of advanced materials possessing both advantages of organic components such as designability and good processability and in...
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Article
Open AccessElectronic chirality inversion of lanthanide complex induced by achiral molecules
A novel mechanism for chiroptical activity inversion based on the electronic structure of metal complexes without Λ- or Δ-type structure change was demonstrated spectroscopically and theoretically. To demonstr...
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Article
Comparison of luminescent properties of helicene-like bibenzothiophenes with o-carborane and 5,6-dicarba-nido-decaborane
This article describes comparison of the anchoring effect on electronic properties of the helicene-like bibenzothiophene between o-carborane and 5,6-dicarba-nido-decaborane. The o-carborane and nido-decaborane-fu...
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Article
Synthesis of a near-infrared light-absorbing polymer based on thiophene-substituted Aza-BODIPY
An alternating conjugated polymer with thiophene-substituted aza-boron dipyrromethene (BODIPY) was synthesized in which the carbon atom at the meso-position in the ligand moiety was replaced by nitrogen. Initiall...
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Article
Synthesis, properties and structure of borafluorene-based conjugated polymers with kinetically and thermodynamically stabilized tetracoordinated boron atoms
Herein, borafluorene-conjugated polymers with a dibromoborafluorene monomer and various boronic acid ester comonomers are reported. By employing the Suzuki−Miyaura cross-coupling reaction, a series of copolyme...
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Article
Recent progress in the development of advanced element-block materials
An element-block is defined as a minimum functional unit composed of heteroatoms. The concept of ‘element-block material’ for designing advanced materials was proposed in 2015. In this review, the recent progr...
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Article
π-Conjugated polymer-layered structures: synthesis and self-assembly
π-Conjugated polymers capped with a boronic acid end-functional group were synthesized by chain-growth Suzuki–Miyaura polycondensation. The obtained polymers were reacted with a π-stacked-polymer scaffold, develo...
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Article
Remarkably high miscibility of octa-substituted POSS with commodity conjugated polymers and molecular fillers for the improvement of homogeneities of polymer matrices
This manuscript describes the extremely high affinities of polyhedral oligomeric silsesquioxane (POSS) with conjugated polymers. Polymer films of polyfluorene (PF) and poly(3-hexylthiophene) (P3HT) containing ...
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Article
Open AccessThe relationship between magneto-optical properties and molecular chirality
The chiral nonanuclear Tb(III) clusters [Tb9(sal-(R)-Bt)16(μ-OH)10]+[NO3]− (Tb-(R)-Bt: sal-(R)-Bt=(R)-2-butyl salicylate) and [Tb9(sal-(S)-Bt)16(μ-OH)10]+[NO3]− (Tb-(S)-Bt: sal-(S)-Bt=(S)-2-butyl salicylate) were...
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Article
Preparation of photo-responsive hybrid materials based on hydrogels involving imidazolium-presenting gold nanoparticles
In this study we developed hydrogel-based hybrid materials with gold nanoparticles that have tunable optical properties under light irradiation. Attaining the stimuli-responsive dynamic changes in the solid ma...
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Article
Control of interparticle spacing in stable aggregates of gold nanoparticles by light irradiation
This study describes the modulation of interparticle distances in aggregates of gold nanoparticles by light irradiation. Stable aggregates of a series of imidazolium-presenting gold nanoparticles were obtained...
