Daisuke Sakamaki
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View article: Redox Control of Radical‐Based Dynamic Covalent Chemistry: Macrocycle Formation and Electrochemical Deoligomerization of Bis(Dicyanomethyl Radical)‐Substituted Ferrocene
Redox Control of Radical‐Based Dynamic Covalent Chemistry: Macrocycle Formation and Electrochemical Deoligomerization of Bis(Dicyanomethyl Radical)‐Substituted Ferrocene Open
Dicyanomethyl radicals conjugated with electron donors have attracted renewed interest as building blocks in radical‐based dynamic covalent chemistry (DCC). In this study, we prepared a novel diradical exhibiting DCC properties, composed o…
View article: Intermolecular Toroidal Conjugation: Circularly Stacked 16 π‐Planes Formed by Supramolecular Assembly Enabling Cyclic Charge and Energy Delocalization
Intermolecular Toroidal Conjugation: Circularly Stacked 16 π‐Planes Formed by Supramolecular Assembly Enabling Cyclic Charge and Energy Delocalization Open
Toroidal conjugation is a unique mechanism for charge and exciton delocalization via through‐space overlap among circularly stacked π‐orbitals, but the examples have been limited to intramolecular phenomena, where π‐planes are arranged aro…
View article: Intermolecular Toroidal Conjugation: Circularly Stacked 16 π‐Planes Formed by Supramolecular Assembly Enabling Cyclic Charge and Energy Delocalization
Intermolecular Toroidal Conjugation: Circularly Stacked 16 π‐Planes Formed by Supramolecular Assembly Enabling Cyclic Charge and Energy Delocalization Open
Toroidal conjugation is a unique mechanism for charge and exciton delocalization via through‐space overlap among circularly stacked π‐orbitals, but the examples have been limited to intramolecular phenomena, where π‐planes are arranged aro…
View article: Intermolecular Toroidal Conjugation: Circularly Stacked 16 π-Planes Formed by Supramolecular Assembly Enabling Cyclic Charge and Energy Delocalization
Intermolecular Toroidal Conjugation: Circularly Stacked 16 π-Planes Formed by Supramolecular Assembly Enabling Cyclic Charge and Energy Delocalization Open
Toroidal conjugation is a unique way of charge and exciton delocalization via through-space overlap among circularly stacked π-orbitals, but the examples have been limited to intramolecular phenomena where π-planes are arranged around a hu…
View article: Intermolecular Toroidal Conjugation: Circularly Stacked 16 π-Planes Formed by Supramolecular Assembly Enabling Cyclic Charge and Energy Delocalization
Intermolecular Toroidal Conjugation: Circularly Stacked 16 π-Planes Formed by Supramolecular Assembly Enabling Cyclic Charge and Energy Delocalization Open
Toroidal conjugation is a unique way of charge and exciton delocalization via through-space overlap among circularly stacked π-orbitals, but the examples have been limited to intramolecular phenomena where π-planes are arranged around a hu…
View article: Croconaine dyes with intermediate diradical character exhibiting intense one- and two-photon absorption in the short-wavelength infrared region
Croconaine dyes with intermediate diradical character exhibiting intense one- and two-photon absorption in the short-wavelength infrared region Open
Expansion of π-conjugated systems and substitution with heavier chalcogens increase the diradical character of chalcogenopyrylium-based croconaine dyes, leading to enhanced one- and two-photon absorption in the short-wavelength infrared re…
View article: Multidimensional Dynamic Control of Supramolecular Phthalocyanine Gear: A Self-Assembly System Responding to Solvent, Temperature, and Hydrostatic Pressure
Multidimensional Dynamic Control of Supramolecular Phthalocyanine Gear: A Self-Assembly System Responding to Solvent, Temperature, and Hydrostatic Pressure Open
Smart supramolecular materials that respond toward various external stimuli hold great promise for various applications in molecular memories, logic gates, and drug delivery systems. In this study, the active control over the self-assembly…
View article: Completely Solvent-free Synthesis of Double Heterohelicenes and Their Further Ring Fusion Using Mechanochemical Reaction
Completely Solvent-free Synthesis of Double Heterohelicenes and Their Further Ring Fusion Using Mechanochemical Reaction Open
In this study, we developed a simple and efficient method for synthesizing double heterohelicenes (DHHs) composed of two heteroacenes bearing an NH group, such as benzo[b]phenoxazine (BPO) and dibenzo[b,i]phenoxazines (DBPO), using mechano…
View article: Completely Solvent-free Synthesis of Double Heterohelicenes and Their Further Ring Fusion Using Mechanochemical Reaction
Completely Solvent-free Synthesis of Double Heterohelicenes and Their Further Ring Fusion Using Mechanochemical Reaction Open
In this study, we developed a simple and efficient method for synthesizing double hetero[5]helicenes composed of two heteroacenes bearing an NH group, such as benzo[b]phenoxazine (BPO) and dibenzo[b,i]phenoxazines (DBPO), using mechanochem…
View article: Solvent-free synthesis and chiroptical properties of a C–N axially chiral cruciform dimer of benzo[<i>b</i>]phenoxazine
Solvent-free synthesis and chiroptical properties of a C–N axially chiral cruciform dimer of benzo[<i>b</i>]phenoxazine Open
A novel C–N axially chiral molecule composed of two tert -butyl-substituted benzo[ b ]phenoxazine (BPO) was synthesized via completely solvent-free reactions.
View article: Completely solvent-free synthesis of double heterohelicenes and their further ring fusion using mechanochemical reaction
Completely solvent-free synthesis of double heterohelicenes and their further ring fusion using mechanochemical reaction Open
We succeeded in completely solvent-free synthesis of double heterohelicenes composed of two heteroacenes and their further conversion to semi- and fully planarized molecules using mechanochemical oxidative C–N coupling reactions.
View article: AJOG GR Table of Contents
AJOG GR Table of Contents Open
View article: AJOG GR Table of Contents
AJOG GR Table of Contents Open
View article: CCDC 2287182: Experimental Crystal Structure Determination
CCDC 2287182: 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 2249610: Experimental Crystal Structure Determination
CCDC 2249610: 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: Intramolecular electron transfer in multi-redox systems based on cyclic [3]spirobifluorenylene compound
Intramolecular electron transfer in multi-redox systems based on cyclic [3]spirobifluorenylene compound Open
Cyclic [3]spirobifluorenylene with bulky alkyl groups at the ends (1) was designed and synthesized to investigate the electron transfer phenomena in a -conjugated system including orthogonal -conjugated chains. The three bifluorenyl units …
View article: Postpartum recovery of nulliparous women following scheduled cesarean delivery and spontaneous vaginal delivery: a prospective observational study
Postpartum recovery of nulliparous women following scheduled cesarean delivery and spontaneous vaginal delivery: a prospective observational study Open
Inpatient postpartum recovery is significantly better in the first 2 postpartum days following spontaneous vaginal delivery compared with scheduled cesarean delivery. Inpatient recovery is largely achieved within 4 and 3 days following sch…
View article: CCDC 2232697: Experimental Crystal Structure Determination
CCDC 2232697: 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 2232698: Experimental Crystal Structure Determination
CCDC 2232698: 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: Ultrasonographic images of spina bifida before obstetric anesthesia: a case series
Ultrasonographic images of spina bifida before obstetric anesthesia: a case series Open
Background Spina bifida is a relatively common congenital malformation. As the functional prognosis of patients with spina bifida has improved over time, the number of cases resulting in pregnancy and delivery has increased. Lumbar ultraso…
View article: CCDC 2103647: Experimental Crystal Structure Determination
CCDC 2103647: 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: Intramolecular electron transfer in multi-redox systems based on cyclic [3]spirobifluorenylene compound
Intramolecular electron transfer in multi-redox systems based on cyclic [3]spirobifluorenylene compound Open
Cyclic [3]spirobifluorenylene with bulky alkyl groups at the ends (1) was designed and synthesized to investigate the electron transfer phenomena in a -conjugated system including orthogonal π-conjugated chains. The three bifluorenyl units…
View article: Intramolecular electron transfer in multi-redox systems based on cyclic [3]spirobifluorenylne compound
Intramolecular electron transfer in multi-redox systems based on cyclic [3]spirobifluorenylne compound Open
Cyclic [3]spirobifluorenylene with bulky alkyl groups at the ends (1) was designed and synthesized to investigate the electron transfer phenomena in a -conjugated system including orthogonal π-conjugated chains. The three bifluorenyl units…
View article: Intramolecular electron transfer in multi-redox systems based on cyclic spiro[3]bifluorenylne compound
Intramolecular electron transfer in multi-redox systems based on cyclic spiro[3]bifluorenylne compound Open
Cyclic [3]spirobifluorenylene with bulky alkyl groups at the ends (1) was designed and synthesized to investigate the electron transfer phenomena in a -conjugated system including orthogonal π-conjugated chains. The three bifluorenyl units…
View article: CCDC 2194625: Experimental Crystal Structure Determination
CCDC 2194625: 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 2194627: Experimental Crystal Structure Determination
CCDC 2194627: 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 2194626: Experimental Crystal Structure Determination
CCDC 2194626: 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 2218262: Experimental Crystal Structure Determination
CCDC 2218262: 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 2218263: Experimental Crystal Structure Determination
CCDC 2218263: 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: Unveiling a new aspect of oxocarbons: open-shell character of 4- and 5-membered oxocarbon derivatives showing near-infrared absorption
Unveiling a new aspect of oxocarbons: open-shell character of 4- and 5-membered oxocarbon derivatives showing near-infrared absorption Open
Near-infrared absorbing oxocarbon derivatives, so-called squaraine and croconaine dyes, regarded as closed-shell species so far, display the intermediate open-shell character that impacts their one- and two-photon absorption properties.