Hiroshi Miyasaka
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View article: Evolution of Circularly Polarized Luminescence in Atomically Precise Silver Nanoclusters with Intrinsic Chirality
Evolution of Circularly Polarized Luminescence in Atomically Precise Silver Nanoclusters with Intrinsic Chirality Open
Circularly polarized luminescence (CPL) is a powerful tool to probe the chiroptical properties of molecular systems in the excited state. Here, we demonstrate the evolution of excited‐state chiroptical property in silver nanoclusters (NCs)…
View article: Evolution of Circularly Polarized Luminescence in Atomically Precise Silver Nanoclusters with Intrinsic Chirality
Evolution of Circularly Polarized Luminescence in Atomically Precise Silver Nanoclusters with Intrinsic Chirality Open
Circularly polarized luminescence (CPL) is a powerful tool to probe the chiroptical properties of molecular systems in the excited state. Here, we demonstrate the evolution of excited‐state chiroptical property in silver nanoclusters (NCs)…
View article: Spin-Dependent Exciton Transport and Negative Diffusion in Thermally Activated Delayed Fluorescence Crystals
Spin-Dependent Exciton Transport and Negative Diffusion in Thermally Activated Delayed Fluorescence Crystals Open
Thermally activated delayed fluorescence (TADF) materials have emerged as a promising class of emitters capable of harvesting triplet excitons via reverse intersystem crossing (RISC), offering a route to 100% internal quantum efficiency. W…
View article: Driving Micro‐Objects Using Optical Force due to Fluorescence Emission From Molecules
Driving Micro‐Objects Using Optical Force due to Fluorescence Emission From Molecules Open
Emission of fluorescence in a specific direction generates an optical force in the opposite direction of the emission by the momentum conservation raw. This “emission force” can induce the directional transportation of small objects anisot…
View article: Excitation Energy Transfer from Single Rare-Earth Upconversion Nanoparticles to Organic Conjugated Polymer Film: a Super-Resolved Microscopic Study
Excitation Energy Transfer from Single Rare-Earth Upconversion Nanoparticles to Organic Conjugated Polymer Film: a Super-Resolved Microscopic Study Open
We have utilized an upconverting nanoparticle (UCNP) with thulium (Tm) ions as emitters and Ytterbium (Yb) ions as sensitizers (TmUCNP) for nanometric photoexcitation of a film of conjugated polymer, poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-…
View article: Excitation Energy Transfer from Sigle Rare-Earth Upconversion Nanoparticles to Organic Conjugated Polymer Film: a Super-Resolved Microscopic Study
Excitation Energy Transfer from Sigle Rare-Earth Upconversion Nanoparticles to Organic Conjugated Polymer Film: a Super-Resolved Microscopic Study Open
We have utilized an upconverting nanoparticle (UCNP) with thulium (Tm) ions as emitters and Ytterbium (Yb) ions as sensitizers (TmUCNP) for nanometric photoexcitation of a film of conjugated polymer, poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-…
View article: The impact of dihedral angle in aryl groups on the photocyclization reactivity of inverse-type diarylethenes
The impact of dihedral angle in aryl groups on the photocyclization reactivity of inverse-type diarylethenes Open
Photocyclization reactivity of inverse-type diarylethenes strongly depends on the dihedral angle in aryl groups. Especially, the photocyclization reaction in crystal requires a dihedral angle between the thiophene and phenyl rings greater …
View article: Propeller‐Shaped Blatter‐Based Triradicals: Distortion‐Free Triangular Spin System and Spin‐State‐Dependent Photophysical Properties
Propeller‐Shaped Blatter‐Based Triradicals: Distortion‐Free Triangular Spin System and Spin‐State‐Dependent Photophysical Properties Open
Herein, we report the synthesis and properties of triptycene‐based C 3v ‐ and C s ‐symmetric stable triradicals. SQUID magnetometry showed the propeller‐shaped triradicals were both an antiferromagnetic equilateral triangle spin system wit…
View article: Excited State Dynamics of Geometrical Evolution of α-Substituted Dibenzoylmethanatoboron Difluoride Complex with Aggregation-Induced Emission Property
Excited State Dynamics of Geometrical Evolution of α-Substituted Dibenzoylmethanatoboron Difluoride Complex with Aggregation-Induced Emission Property Open
Organic molecules with an aggregation-induced emission (AIE) property have been attracting much attention from the viewpoint of application to solid state emissive materials. For the AIE mechanism, quantum mechanical studies proposed the r…
View article: Spatially selective actuation of liquid-crystalline polymer films through two-photon absorption processes
Spatially selective actuation of liquid-crystalline polymer films through two-photon absorption processes Open
Soft materials that respond to external stimuli are promising candidates for next-generation actuators with human-friendly nature1,2. Among various stimuli to induce strain, light offers spatial selectivity, which allows versatile motion o…
View article: Near-infrared two-photon absorption and excited state dynamics of a fluorescent diarylethene derivative
Near-infrared two-photon absorption and excited state dynamics of a fluorescent diarylethene derivative Open
Near-infrared two-photon absorption and excited state dynamics of a fluorescent diarylethene (fDAE) derivative were investigated by time-resolved absorption and fluorescence spectroscopies. Prescreening with quantum chemical calculation pr…
View article: Optically Distinguishable Electronic Spin-isomers of a Stable Organic Diradical
Optically Distinguishable Electronic Spin-isomers of a Stable Organic Diradical Open
Herein, we introduce a model of electronic spin isomers, the electronic counterpart of nuclear spin isomers, by using a stable organic diradical. The diradical, composed of two benzotriazinyl radicals connected by a rigid triptycene skelet…
View article: Innenrücktitelbild: Site‐Selective Photo‐Crosslinking of Stilbene Pairs in a DNA Duplex Mediated by Ruthenium Photocatalyst (Angew. Chem. 14/2024)
Innenrücktitelbild: Site‐Selective Photo‐Crosslinking of Stilbene Pairs in a DNA Duplex Mediated by Ruthenium Photocatalyst (Angew. Chem. 14/2024) Open
Site-selective photocrosslinking of DNA duplex was achieved in the Research Article (e202319516) by Hiromu Kashida, Hiroyuki Asanuma et al. A ruthenium complex on a triplex-forming oligonucleotide effectively catalyzed [2+2] photocycloaddi…
View article: Inside Back Cover: Site‐Selective Photo‐Crosslinking of Stilbene Pairs in a DNA Duplex Mediated by Ruthenium Photocatalyst (Angew. Chem. Int. Ed. 14/2024)
Inside Back Cover: Site‐Selective Photo‐Crosslinking of Stilbene Pairs in a DNA Duplex Mediated by Ruthenium Photocatalyst (Angew. Chem. Int. Ed. 14/2024) Open
Site-selective photocrosslinking of DNA duplex was achieved in the Research Article (e202319516) by Hiromu Kashida, Hiroyuki Asanuma et al. A ruthenium complex on a triplex-forming oligonucleotide effectively catalyzed [2+2] photocycloaddi…
View article: Visible-light-induced direct C–H alkylation of polycyclic aromatic hydrocarbons with alkylsulfones
Visible-light-induced direct C–H alkylation of polycyclic aromatic hydrocarbons with alkylsulfones Open
Polycyclic aromatic hydrocarbons are derivatized with high selectivity using readily available alkylsulfones under visible light irradiation.
View article: Relationship between spatially heterogeneous reaction dynamics and photochemical kinetics in single crystals of anthracene derivatives
Relationship between spatially heterogeneous reaction dynamics and photochemical kinetics in single crystals of anthracene derivatives Open
Both the photochemical kinetics and the spatial reaction dynamics in single crystals could be rationalized in terms of the difference in the cooperativity of the reactions that relates the magnitude of the conformational change required fo…
View article: Fluctuation-mediated orbital rotation of microparticles in non-coaxially counter-propagating optical tweezers
Fluctuation-mediated orbital rotation of microparticles in non-coaxially counter-propagating optical tweezers Open
We have demonstrated in the present report that dielectric microparticles exhibited orbital rotation in the light field of non-coaxially configured two counter-propagating laser beams both in numerical simulations and experiments. A series…
View article: Driving Micro-Objects Using Optical Force due to Photoemission
Driving Micro-Objects Using Optical Force due to Photoemission Open
Emission of fluorescence in a specific direction generates an optical force in the opposite direction of the emission by the momentum conservation raw. This "emission force" can induce the directional transportation of a tiny object anisot…
View article: Cage‐Like Sodalite‐Type Porous Organic Salts Enabling Luminescent Molecule's Incorporation and Room‐temperature Phosphorescence Induction in Air (Small 36/2023)
Cage‐Like Sodalite‐Type Porous Organic Salts Enabling Luminescent Molecule's Incorporation and Room‐temperature Phosphorescence Induction in Air (Small 36/2023) Open
Cage-Like Porous Structures In article number 2301887, Norimitsu Tohnai and co-workers create cage-like sodalite-type porous organic salts (s-POSs). s-POSs, with iodine exposed on the pore surface, incorporate pyrene, and induce its room-t…
View article: Graphical Abstract: Angew. Chem. Int. Ed. 29/2023
Graphical Abstract: Angew. Chem. Int. Ed. 29/2023 Open
Chalcogen BondChalcogen bonding can play asignificant role in designing complex bioinspired structures.Int heir Research Article (e202304202), Gebhard Haberhauer et al. employ two different types of this interaction to construct single and…
View article: A Kinetically Stabilized Nitrogen‐Doped Triangulene Cation: Stable and NIR Fluorescent Diradical Cation with Triplet Ground State
A Kinetically Stabilized Nitrogen‐Doped Triangulene Cation: Stable and NIR Fluorescent Diradical Cation with Triplet Ground State Open
A kinetically‐stabilized nitrogen‐doped triangulene cation derivative has been synthesized and isolated as the stable diradical with a triplet ground state that exhibits near‐infrared emission. As was the case for a triangulene derivative …
View article: CCDC 2252304: Experimental Crystal Structure Determination
CCDC 2252304: 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 2252305: Experimental Crystal Structure Determination
CCDC 2252305: 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 2252306: Experimental Crystal Structure Determination
CCDC 2252306: 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 2189550: Experimental Crystal Structure Determination
CCDC 2189550: 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 2189551: Experimental Crystal Structure Determination
CCDC 2189551: 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 2189553: Experimental Crystal Structure Determination
CCDC 2189553: 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 2189552: Experimental Crystal Structure Determination
CCDC 2189552: 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: Reaction dynamics of molecules in highly electronically excited states attained by multiphoton and multiple excitation methods
Reaction dynamics of molecules in highly electronically excited states attained by multiphoton and multiple excitation methods Open
Multiphoton absorption and multiple excitation can lead to the formation of highly electronically excited states of molecules. We have been applying these excitation methods to explore specific photochemical reactions, which are rather dif…