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Prof. OhbaOPEN Access

Swift and Efficient Nuclear Spin Conversion of M

olecular Hydrogen Confined in Prussian Blue AnalogsY

. Ohtsubo, A

. Mishim

a, A. H

ori, R. M

atsuda, R. O

htani, M. O

hba,*C

hem. Lett. 2020, 49, 149-152.

Nu

clear S

pin

C

onversion

by The Chem

ical Society of Japan

Magnetism

Molecular

Prof. Aw

agaD

r. Mizuno

Molecu

lar S

pin

G

yroid

OPEN AccessRecent Developm

ents in Molecular Spin Gyroid Research

A. M

izuno,* Y. S

huku, K. A

waga,*

Bull. Chem

. Soc. Jpn.2019,92, 1068-1093.

Prof. OhkoshiN

an

oma

gnets

Prof. Morita

Orga

nic

-Ra

dica

l

Prof. Yamashita

Prof. Miyasaka

OPEN AccessW

ater-vapor Sensitive Spin-state Switching in an Iron(III) Com

plex with

Nucleobase Pendants Making Flexible Hydrogen-bonded Netw

orksK

. Kagesaw

a,* Y. Ichikaw

a, H. Iguchi, B

. K. B

reedlove, Z. L

i, M

. Yam

ashita,* A. O

kazawa, W

. Kosaka , H

. Miyasaka,*

Chem

. Lett.2019,48, 1221-1224.

Sp

in-sta

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onversion

Broadband-Millim

eter-Wave Absorber Based on

-(Ti IVCoII)x Fe

IIIO

3 for Advanced Driver Assistance Systems

A. N

amai, K

. Ogata, M

. Yoshikiyo, S

. Ohkoshi,*

Bull. Chem

. Soc. Jpn. 2020,93, 20-25.

Ferromagnetically Coupled Hydroxo-bridged

Heptanuclear Ni(II) Wheel Cluster w

ith S= 7 Ground Spin State

S. K

usumoto, Y

. Kim

, M. N

akamura, L

. F. Lindoy,

S. H

ayami,* C

hem. Lett. 2020,49, 24-27.

OPEN AccessTrioxotriangulene: Air-and Therm

ally Stable Organic Carbon-

-Radical without Steric Protection

Y. M

orita,* T. Murata, A

. Ueda, C

. Yam

ada, Y. K

anzaki, D. S

hiomi,

K. S

ato, T. Takui,Bull. Chem

. Soc. Jpn.2018,91, 922-931.

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Knowledge for your next step forward

Editorial Board ChairRussell Morris University of St Andrews, UK

rsc.li/dalton

@DaltonTrans

Inorganic Chemistry Frontiers The international, high quality journal for interdisciplinary research between inorganic chemistry and related subjects

Editor-in-chiefSong Gao Peking University, China

rsc.li/frontiers-inorganic

@InorgChemFront

Dalton Transactions The international journal for high quality, original research in inorganic and organometallic chemistry

Submit your work today pubs.rsc.org

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ISSN 0306-0012

COMMUNICATIONDouglas W. Stephen et al. N-Heterocyclic carbene stabilized parent sulfenyl, selenenyl, and tellurenyl cations (XH+, X = S, Se, Te)

Volume 46Number 1014 March 2017Pages 3073-3412 Dalton

TransactionsAn international journal of inorganic chemistry

INORGANIC CHEMISTRYF R O N T I E R S

Volume 5 | Number 3 | Month 2018

rsc.li/frontiers-inorganic

306-0012

UNICATTIONONW. Steeppheen et al.

ocyclicc cararbene stabilized parent sulfenyl, selenenyl,renyl cattions (XH+, X = S, Se, Te)

S

rsc.li/frontiers-inorganic

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From Material Evaluation (Specific Surface Area and Pore Size Distribution) to Gas and Vapor Separation Performance Evaluation!

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BELSORP®-maxⅡ-HVSpecifications of High Temperature Vapor Adsorption Amount Measurement

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A01: Molecular asymmetryLeader: Mitsuhiko Shionoya (U-Tokyo)Creation of higher-order molecular functions based on quantitative design of asymmetric coordination sphere

A02: Assembly asymmetry

A03: Spatial asymmetry A04: Electron system asymmetry

Leader: Nobuo Kimizuka (Kyushu Univ.)Creation of asymmetric high-order structures based on self-assembly and their functions 

Leader: Takashi Uemura (U-Tokyo)Creation of asymmetric functional nanospaces exhibiting high selectivity, anisotropy, and directivity

Leader: Toshiharu Teranishi (Kyoto Univ.)Creation of chiral material conversion field and chiral electronic properties based on the asymmetrically assembled structures

International Advisory Board

“Coordination Asymmetry”

Website: http://asymmetallic.jp/

Design of Asymmetric Coordination Sphere and Anisotropic Assembly for the Creation of Functional Molecules

One of the ultimate goals of chemistry is to control the absolute and relative configurations of elements and design the bonds between the elements freely. Controlling the absolute configuration and asymmetry of the metallic center is a key to open up science for new materials of metallic elements that account for approximately 80% of the periodic table. This area intends to create a new scientific principle “Coordination Asymmetry” by the development of methodologies to build asymmetry and chirality of structural and electronic states with metal complexes and coordination space obtained from assembled complexes and its nano-micro level assembly based on the molecular level control of the coordination sphere of metal complexes.

5354 | Chem. Commun., 2016, 52, 5354--5370 This journal is©The Royal Society of Chemistry 2016

Cite this:Chem. Commun., 2016,52, 5354

Recent emergence of photon upconversion basedon triplet energy migration in molecularassemblies

Nobuhiro Yanai*ab and Nobuo Kimizuka*a

An emerging field of triplet energy migration-based photon upconversion (TEM-UC) is reviewed. Highly

efficient photon upconversion has been realized in a wide range of chromophore assemblies, such as

non-solvent liquids, ionic liquids, amorphous solids, gels, supramolecular assemblies, molecular crystals,

and metal–organic frameworks (MOFs). The control over their assembly structures allows for unexpected

air-stability and maximum upconversion quantum yield at weak solar irradiance that has never been achieved

by the conventional molecular diffusion-based mechanism. The introduction of the ‘‘self-assembly’’ concept

offers a new perspective in photon upconversion research and triplet exciton science, which show promise

for numerous applications ranging from solar energy conversion to chemical biology.

IntroductionPhoton upconversion (UC) is a process that converts lowerenergy (longer wavelength) photons to higher energy (shorterwavelength) photons. It is technologically important for a variety

of applications ranging from energy to biology. This FeatureArticle sheds light on a recently emerged promising strategy,triplet energy migration-based photon upconversion (TEM-UC).We start with the brief statements of potential applications,then describe the basic idea and proof-of-concept examples ofTEM-UC, and finally conclude with state-of-the-art materialsdesigns and future directions.

The efficiency of renewable energy production using solarenergy can be enhanced by implementing the UC process. Solarcells suffer from the spectral mismatches between the solar emis-sion and the bandgaps, and overcoming the Shockley–Queisser

a Department of Chemistry and Biochemistry, Graduate School of Engineering,Center for Molecular Systems (CMS), Kyushu University, 744 Moto-oka, Nishi-ku,Fukuoka 819-0395, Japan. E-mail: yanai@mail.cstm.kyushu-u.ac.jp,n-kimi@mail.cstm.kyushu-u.ac.jp

b PRESTO, JST, Honcho 4-1-8, Kawaguchi, Saitama 332-0012, Japan

Nobuhiro Yanai

Nobuhiro Yanai received his PhDdegree from Kyoto University in2011 with Prof. Susumu Kitagawaand Dr Takashi Uemura onpolymer properties in coordinationnanospaces. He was a postdoctoralresearch fellow with Prof. SteveGranick at the University of Illinoisat Urbana-Champaign, working onthe self-assembly of MOF colloids.In 2012, he became an assistantprofessor at Kyushu University,where he has been an associateprofessor since 2015. Since 2014,

he has also been a researcher of the PRESTO program in JST. Hiscurrent research interests are in materials chemistry for photonupconversion and new triplet science.

Nobuo Kimizuka

Nobuo Kimizuka received his PhDdegree in 1990 on the excitonicchromophore interactions inmolecular self-assemblies withProf. Toyoki Kunitake at KyushuUniversity. After working as apostdoc with Prof. HelmutRingsdorf at Mainz University,he was promoted to an associateprofessor in 1992 and to a fullprofessor in 2000. He was aprincipal investigator of JSTCREST (2007–2014) and iscurrently the director of Center for

Molecular Systems, Kyushu University (CMS). His work encompassesthe synthesis, structure, properties and functions of molecular self-assemblies and nanomaterials with recent focus on photon energyconversion, supramolecular ferroelectrics and soft-ionics.

Received 5th January 2016,Accepted 22nd February 2016

DOI: 10.1039/c6cc00089d

www.rsc.org/chemcomm

ChemComm

FEATURE ARTICLE

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View Article OnlineView Journal | View Issue

Theodore Agapie (USA), Eric V. Anslyn (USA), Guido Clever (Germany), Nicholas A. Kotov (USA), Paul Lusby (UK), Mark MacLachlan (Canada), Eric Meggers (Germany), Jens Müller (Germany), Jonathan Nitschke (UK), Eugen Stulz (UK), Quan-Ming Wang (China), Hai-Bo Yang (China)

Research Item A01: Development of Soft Crystals through molecular design & synthesis

Research Item A03: Development of Soft Crystals with superior physical properties & functions

Research Item A02: Development of Soft Crystals with novel structure & morphology

Control of Stimulus-response and Functionalization of Luminescent Smart Soft Crystals

Masako Kato Hokkaido University

Satoshi Takamizawa Yokohama City University

Yoshinori Yamanoi The University of Tokyo

Mechanistic Study and Development of Novel Functions of Soft Crystals with Molecular Domino Transformation

Hajime Ito Hokkaido University

Synthesis and Development of Chemiluminescent Soft Crystals for Spatiotemporal Control of the Stimulus-responsive Functions

Takashi Hirano The University of Electro-Communications

Observation of Reaction Transient against External Fields in Soft Crystals using X-ray Molecular Movie

Ayana Sato-Tomita Jichi Medical University

Development of Crystal Potential of Metal Complex and Mechanism Analysis of Polymorphic Transition Phenomena

Hitoshi Goto Toyohashi University of Technology

Creation of helical biopolymer-integrated softcrystal and its application to photo-electronic devices

Norihisa Kobayashi Chiba University

Fabrication of Soft Photonic Crystals for Novel Functions

Jian Ping Gong Hokkaido University

Development of luminescence properties by the manipulation of interface in Soft Crystals

Miki Hasegawa Aoyama Gakuin University

Development of preparation technologies for metastable states of soft crystals and clarification of their phase-transition phenomena

Kazuyuki Ishii The University of Tokyo

Developments of Thermomechanical Properties of Soft Crystals

Development of stimulation-responsive soft crystal using the characteristics of silicon-silicon bond

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