Takayuki Tanaka
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View article: Mechanical Properties and Anisotropy Analysis of α+β Dual Phase Ti-Fe Sintered Alloys via Hot Rolling Process
Mechanical Properties and Anisotropy Analysis of α+β Dual Phase Ti-Fe Sintered Alloys via Hot Rolling Process Open
View article: Synthesis of an aza[5]helicene-incorporated macrocyclic heteroarene via oxidation of an <i>o</i> -phenylene-pyrrole-thiophene icosamer
Synthesis of an aza[5]helicene-incorporated macrocyclic heteroarene via oxidation of an <i>o</i> -phenylene-pyrrole-thiophene icosamer Open
The intramolecular oxidative fusion reaction of macrocyclic heteroaromatic arrays has provided strained polycyclic heteroaromatic macrocycles as promising functional molecules. In this study, we prepared an ortho -phenylene-pyrrole-thiophe…
View article: Synthesis of aza[5]helicene-incorporated macrocyclic heteroarene via oxidation of <i>o</i>-phenylene-pyrrole-thiophene icosamer
Synthesis of aza[5]helicene-incorporated macrocyclic heteroarene via oxidation of <i>o</i>-phenylene-pyrrole-thiophene icosamer Open
Intramolecular oxidative fusion reaction of macrocyclic heteroaromatic arrays has provided strained polycyclic heteroaromatic macrocycles as promising functional molecules. In this study, we prepared an ortho -phenylene-pyrrole-thiophene h…
View article: Synthesis of Azahelicene Derivatives by Utilizing Functionalities of Pyrrolic NH Sites
Synthesis of Azahelicene Derivatives by Utilizing Functionalities of Pyrrolic NH Sites Open
View article: Rolling two-dimensional covalent organic framework (COF) sheets into one-dimensional electronic and proton-conductive nanotubes
Rolling two-dimensional covalent organic framework (COF) sheets into one-dimensional electronic and proton-conductive nanotubes Open
Mimicking the interconvertible carbon allotropes of 2-dimensional (2D) graphene and 1-dimensional (1D) carbon nanotubes (CNTs), herein we report the in situ transformation of 2D π-conjugated covalent organic frameworks (COFs) sheet into 1D…
View article: <i>meso</i> ‐Free Porphyrinoids
<i>meso</i> ‐Free Porphyrinoids Open
meso ‐Unsubstituted ( meso ‐free) porphyrins have been an effective platform for creating versatile peripherally functionalized porphyrins and directly‐linked porphyrin oligomers. The synthetic strategy has been extended to produce meso ‐f…
View article: Impact of Doping on Charge Transport Properties in Thienothiophene‐Based Organic Porous Polymers
Impact of Doping on Charge Transport Properties in Thienothiophene‐Based Organic Porous Polymers Open
Organic covalent frameworks (COFs) have played significant roles in achieving high performance as electronic conductive and semi‐conductive materials in a wide range of applications, including solar cells, capacitors, hydrogen‐production o…
View article: Synthesis of terminus-decorated aza[9]helicenes: control of interlayer interaction
Synthesis of terminus-decorated aza[9]helicenes: control of interlayer interaction Open
Azahelicenes are intriguing luminescent materials with a planar chirality. The properties of aza[9]helicene can be perturbed by attaching substituent at the termini. The impact of the terminal decoration has been investigated in view of st…
View article: Microstructural Formation Mechanism of α+β Dual Phase Ti-Fe Sintered Alloys via Hot Rolling Process
Microstructural Formation Mechanism of α+β Dual Phase Ti-Fe Sintered Alloys via Hot Rolling Process Open
View article: Linked PDF of Table of Contents
Linked PDF of Table of Contents Open
Remote-Carbonyl-Directed Consecutive Arylation of Terminal
View article: Metalla‐Carbaporphyrinoids Consisting of an Acyclic N‐Confused Tetrapyrrole Analogue Served as Stable Near‐Infrared‐II Dyes
Metalla‐Carbaporphyrinoids Consisting of an Acyclic N‐Confused Tetrapyrrole Analogue Served as Stable Near‐Infrared‐II Dyes Open
We present herein the synthesis of novel pseudo ‐metalla‐carbaporphyrinoid species ( 1M : M=Pd and Pt) achieved through the inner coordination of palladium(II) and platinum(II) with an acyclic N‐confused tetrapyrrin analogue. Despite their…
View article: Metalla‐Carbaporphyrinoids Consisting of an Acyclic N‐Confused Tetrapyrrole Analogue Served as Stable Near‐Infrared‐II Dyes
Metalla‐Carbaporphyrinoids Consisting of an Acyclic N‐Confused Tetrapyrrole Analogue Served as Stable Near‐Infrared‐II Dyes Open
We present herein the synthesis of novel pseudo ‐metalla‐carbaporphyrinoid species ( 1M : M=Pd and Pt) achieved through the inner coordination of palladium(II) and platinum(II) with an acyclic N‐confused tetrapyrrin analogue. Despite their…
View article: Impacts of heteroatom substitution on the excited state dynamics of π-extended helicenes
Impacts of heteroatom substitution on the excited state dynamics of π-extended helicenes Open
The excited state dynamics of heterohelicenes [9]TH and [9]AH were spectroscopically studied. [9]AH showed enhanced fluorescence, while phosphorescence occurred in [9]TH due to its enhanced spin–orbit coupling and swift intersystem crossin…
View article: Synthesis of Ni <sup>II</sup> porphyrin—Ni <sup>II</sup> 5,15-diazaporphyrin hybrid tapes
Synthesis of Ni <sup>II</sup> porphyrin—Ni <sup>II</sup> 5,15-diazaporphyrin hybrid tapes Open
Porphyrin-diazaporphyrin hetero oligomers were constructed through a Suzuki–Miyaura cross-coupling reaction. Hetero nanotapes exhibiting strong NIR absorption were obtained via further oxidation of these hetero oligomers.
View article: Cyclo[4]pyrrole with <i>α</i>–<i>β</i> direct linkages
Cyclo[4]pyrrole with <i>α</i>–<i>β</i> direct linkages Open
A cyclo[4]pyrrole bearing pyrrole( α )–pyrrole( β ) direct linkages was synthesized from an oligoketone precursor. Cyclo[4]pyrrole exhibited a non-planar macrocyclic structure whose global π-conjugation was altered depending on the dihedra…
View article: A METHOD FOR DETERMINING FRACTURE MECHANICS PARAMETERS OF CONCRETE BASED ON VERIFICATION AND VALIDATION FOR NUMERICAL ANALYSIS
A METHOD FOR DETERMINING FRACTURE MECHANICS PARAMETERS OF CONCRETE BASED ON VERIFICATION AND VALIDATION FOR NUMERICAL ANALYSIS Open
本論文では,非線形有限要素解析と応答曲面法を用いて,切欠はりの 3 点曲げ実験から,コンクリートの破壊力学パラメータを同定する方法を提案する.提案手法の特徴は,コンクリートの弾性係数・引張強度・破壊エネルギーの 3 つを同時に求められること,ASME V&V 10 に基づく検証と妥当性確認が行われた数値解析を用いていること,応答曲面法に基づく代替モデルを用いて短時間でパラメータ同定が行えること,の 3 点である.はじめに,提案手法の特徴である非線形有限要素解析の概要と,応答…
View article: Synthesizing Aza[n]helicenes to the Limit: Hydrogen-bond-assisted Solubility and Benzannulation Strategy
Synthesizing Aza[n]helicenes to the Limit: Hydrogen-bond-assisted Solubility and Benzannulation Strategy Open
Synthetic challenges toward anomalous structures and electronic states often involve handling problems such as insolubility in common organic solvents and oxida-tive degradation under aerobic conditions. We de-signed benzo-annulated aza[n]…
View article: CCDC 2283362: Experimental Crystal Structure Determination
CCDC 2283362: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2283361: Experimental Crystal Structure Determination
CCDC 2283361: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2283359: Experimental Crystal Structure Determination
CCDC 2283359: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2283360: Experimental Crystal Structure Determination
CCDC 2283360: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2283358: Experimental Crystal Structure Determination
CCDC 2283358: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2240849: Experimental Crystal Structure Determination
CCDC 2240849: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2240848: Experimental Crystal Structure Determination
CCDC 2240848: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2215797: Experimental Crystal Structure Determination
CCDC 2215797: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2215790: Experimental Crystal Structure Determination
CCDC 2215790: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2215796: Experimental Crystal Structure Determination
CCDC 2215796: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2215791: Experimental Crystal Structure Determination
CCDC 2215791: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2215793: Experimental Crystal Structure Determination
CCDC 2215793: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2203232: Experimental Crystal Structure Determination
CCDC 2203232: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …