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I am an experimental chemist working as an associate professor in Kyushu University, Japan. I am interested in creating new triplet science with the use of supramolecular chemistry, coordination chemistry, and colloidal chemistry. I am particularly interested in triplet-triplet annihilation-based photon upconversion (TTA-UC) for many applications ranging from renewable energy production to bioimaging and photodynamic therapy. 
Trying to establish 
new concepts 
in materials science from Kyushu!!


News
2017.9.2
Our new paper on a new upconversion concept without using any triplet sensitizer has been published in ChemistrySelect.

2017.7.7
Our recent paper is adopted as a front cover of Chem. Commun.

2017.6.18 
We organized a seminar for young photo chemists at Fukuoka!! It was really exciting and fruitful. Thank you so much for attending!



2017.6.9
Paper: "Triplet Sensitization by Perovskite Nanocrystals for Photon Upconversion" was published in Chem. Commun. Please check here.

2017.5.2
Paper: "Near infrared-to-blue photon upconversion by exploiting direct S-T absorption of a molecular sensitizer" was published in J. Mater. Chem. C. Please check here.

2016.5.23 
Paper: "All-or-None Switching of Photon Upconversion in Self-Assembled Organogel Systems" was published in Faraday Discussions. Please check here.
This is a collaboration work with Prof. Tsuyoshi Kawai and Dr. Takuya Nakashima (NAIST).

2016.7.7
Our recent paper is adopted as a front cover of J. Mater. Chem. C.


2016.7.1 
We organized a seminar for young polymer chemists in Kyushu!! We appreciate the great invited speakers and attendees!



2016.6.28 
Paper: "Near Infrared-to-Visible Photon Upconversion Sensitized by a Metal Complex with Spin-Forbidden yet Strong S0-T1 Absorption" was published in J. Am. Chem. Soc. Please check here.

2016.5.23 
Paper: "Increased Vis-to-UV upconversion performance by energy level matching between a TADF donor and high triplet energy acceptors" was published in J. Mater. Chem. C. Please check here.
This is a collaboration work with Prof. Chihaya Adachi and Dr. Ryota Kabe (Kyushu University).

2016.4.29
Paper: "Employing Core-Shell Quantum Dots as Triplet Sensitizer for Photon Upconversion" was published in Chem.-Eur. J. Please check here.

2016.4.18
Paper: "Triplet energy migration-based photon upconversion by amphiphilic molecular assemblies in aerated water" was published in Chem. Sci. Please check here.

2016.3.7
Review: "Recent emergence of photon upconversion based on triplet energy migration in molecular assemblies" was published in Chem. Commun. Please check here.

2016.1.8 
Paper: "Molecularly Dispersed Donors in Acceptor Molecular Crystals for Photon Upconversion under Low Excitation Intensity" was published in Chem.-Eur. J. Please check here.

2015.8.19
Paper: "Photon-Upconverting Ionic Liquids: Effective Triplet Energy Migration in Contiguous Ionic Chromophore Arrays" was published in Angew. Chem. Int. Ed. Please check here.

2015.8.3
Paper: "Metallonaphthalocyanines as Triplet Sensitizers for Near-Infrared Photon Upconversion beyond 850 nm" was published in Phys. Chem. Chem. Phys. Please check here.

2015.6.10 
Paper : "Highly Efficient Photon Upconversion in Self-Assembled
Light-Harvesting Molecular Systems" was published in Sci. Rep. Please
check here.
This work was highlighted in Japanese TV news.

2015.5.15 
Paper : "Aggregation-induced Photon Upconversion through Control of the Triplet Energy Landscapes of the Solution and Solid States" was published in Angew. Chem.Int. Ed. Please check here.

2015.2.16 
Paper : "Photon Upconversion in Supramolecular Gel Matrixes: Spontaneous Accumulation of Light-Harvesting Donor-Acceptor Arrays in Nanofibers and Acquired Air Stability" was published in J. Am. Chem. Soc.. Please check here.

2014.9.16  
Paper : "A bis-cyclometalated iridium complex as a benchmark sensitizer for efficient visible-to-UV photon upconversion" was published in Chem. Commun.. Please check here.

2013.12.12 
Paper : "Photon Upconverting Liquids : Matrix-Free Molecular Upconversion Systems Functioning in Air" was published in J. Am. Chem. Soc.. Please check here.

2013.8.15 
Paper : "Near-incompressible Faceted Polymer Microcapsules from Metal-Organic Framework Templates" was published in Adv. Mater.. This is a collaboration work with Dr. Ejima and Prof. Caruso at The University of Melbourne. Please check here.  

2013.2.12 
Received the first prize of the Quadrant Award 2013. 













2012.12.19 
Paper : "Electric Field-induced Assembly of Monodisperse Polyhedral Metal-Organic Framework Crystals" was accepted in J. Am. Chem. Soc. 
Please check here.

2012.12.16 
Paper : "Behavior of Binary Guests in a Porous Coordination Polymer" was accepted in Chem. Mater.. Please check here.

2012.11.1 
Joined Kimizuka Group in Kyushu University as an assistant professor.

2012.5.10 
My paper was chosen as a journal cover of Angew. Chem. Int. Ed.. Please check here.

2012.4.20 
My paper was chosen as a "Hot Paper" of Angew. Chem. Int. Ed..

2012.4.4 
Paper: "Directional Self-Assembly of a Colloidal Metal-Organic Framework" was accepted in Angew. Chem. Int. Ed. First paper in the U.S.!! Please check  here.

2012.3.1 
Presentation: "Polyhedral Assembled Colloids (PACs); a New Family of Colloids with Facets" in APS March Meeting, Boston.

2012.3.1 
Paper: "Guest-to-Host Transmission of Structural Changes for Stimuli-Responsive Adsorption Property" was accepted in J.Am.Chem.Soc. 

2012.1.8 
Paper. "Inclusion and Dielectric Properties of a Vinylidene Fluoride
Oligomer in Coordination Nanochannels" was accepted in Dalton
Transactions.

2011.11.7  
Highlighted: the Nature Materials paper was highlighted in Noteworthy 
Chemistry of the ACS website. Please check here.

2011.9.5 
Paper. "Gas detection by structural variations of fluorescent guest molecules in a flexible porous coordination polymer" was published in Nature Materials
Please check here.

2011.5.28  
Paper: "End-functionalization of a vinylidene fluoride oligomer in coordination nanochannels " was published in J. Mater. Chem.. Please check here.