scholarly journals Triplet energy migration-based photon upconversion by amphiphilic molecular assemblies in aerated water

2016 ◽  
Vol 7 (8) ◽  
pp. 5224-5229 ◽  
Author(s):  
Hironori Kouno ◽  
Taku Ogawa ◽  
Shogo Amemori ◽  
Prasenjit Mahato ◽  
Nobuhiro Yanai ◽  
...  
Keyword(s):  
Self Assembly ◽  
Energy Migration ◽  
Molecular Assemblies ◽  
Triplet Energy ◽  
Outstanding Issue

A molecular self-assembly approach is developed to resolve an outstanding issue in triplet energy migration-based photon upconversion (TEM-UC), that is, air-stable TEM-UC in water.

Recent emergence of photon upconversion based on triplet energy migration in molecular assemblies

2016 ◽  
Vol 52 (31) ◽  
pp. 5354-5370 ◽  
Author(s):  
Nobuhiro Yanai ◽  
Nobuo Kimizuka
Keyword(s):  
Excitation Power ◽  
Energy Migration ◽  
Molecular Assemblies ◽  
Triplet Energy ◽  
Feature Article ◽  
Highly Efficient ◽  
Recent Emergence

This Feature Article reviews an emerging field of triplet energy migration-based photon upconversion (TEM-UC) that allows highly efficient photon upconversion at low excitation power.

scholarly journals Correction: Recent emergence of photon upconversion based on triplet energy migration in molecular assemblies

2017 ◽  
Vol 53 (3) ◽  
pp. 655-655 ◽  
Author(s):  
Nobuhiro Yanai ◽  
Nobuo Kimizuka
Keyword(s):  
Energy Migration ◽  
Molecular Assemblies ◽  
Triplet Energy ◽  
Recent Emergence

Correction for ‘Recent emergence of photon upconversion based on triplet energy migration in molecular assemblies’ by Nobuhiro Yanai et al., Chem. Commun., 2016, 52, 5354–5370.

Triplet Energy Migration in Poly(4-methacryloylbenzophenone-co-methyl methacrylate) Films:  Temperature Dependence and Chromophore Concentration Dependence

1996 ◽  
Vol 29 (5) ◽  
pp. 1589-1594 ◽  
Author(s):  
Akira Tsuchida ◽  
Masahide Yamamoto ◽  
William R. Liebe ◽  
Richard D. Burkhart ◽  
Kyoji Tsubakiyama
Keyword(s):  
Methyl Methacrylate ◽  
Temperature Dependence ◽  
Concentration Dependence ◽  
Energy Migration ◽  
Triplet Energy ◽  
Chromophore Concentration

scholarly journals Aqueous Photon Upconversion by Anionic Acceptors Self-Assembled on Cationic Bilayer Membranes with a Long Triplet Lifetime

2019 ◽  
Vol 01 (01) ◽  
pp. 043-049
Author(s):  
Deepak Asthana ◽  
Shota Hisamitsu ◽  
Masa-aki Morikawa ◽  
Pengfei Duan ◽  
Takuya Nakashima ◽  
...  
Keyword(s):  
Self Assembly ◽  
Molecular Design ◽  
Luminescence Spectra ◽  
Scanning Calorimetry ◽  
Triplet Energy ◽  
Bilayer Membranes ◽  
Excitation Light ◽  
Hydrogen Bond Networks ◽  
Inner Surface ◽  
Triplet Lifetime

Anionic 9,10-diphenylanthracene chromophores electrostatically bound to cationic, chiral bilayer membranes show ordered self-assembly in water. The integrity of the chromophore-accumulated aqueous bilayer membranes is ensured by multiple hydrogen-bond networks introduced in the bilayer, which allowed adaptive accommodation of the guest chromophores at the inner surface of the bilayer while maintaining their cohesive interactions. The regular chromophore alignment in the aqueous assembly is confirmed by differential scanning calorimetry, circular dichroism, and circularly polarized luminescence spectra. Excitonic migration of triplet energy occurs among the chromophores densely organized at the inner surface of the bilayer, which lead to triplet–triplet annihilation-based photon upconversion (TTA-UC). This acceptor-bilayer self-assemblies show a notably long triplet lifetime of 8.0 ms, which allows TTA-UC at sufficiently low excitation light intensity. These results demonstrate the usefulness of the simple electrostatic accumulation approach for TTA-UC chromophores where the suitable molecular design of the TTA-UC chromophore-integrated bilayer membranes plays a key role.

scholarly journals Triplet energy migration in polymer langmuir-blodgett films.

1993 ◽  
Vol 6 (1) ◽  
pp. 105-112
Author(s):  
KENJI HISADA ◽  
HIDEAKI KATAYAMA ◽  
SHINZABURO ITO ◽  
MASAHIDE YAMAMOTO
Keyword(s):  
Energy Migration ◽  
Triplet Energy ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Films

scholarly journals Preorganized Chromophores Facilitate Triplet Energy Migration, Annihilation and Upconverted Singlet Energy Collection

2016 ◽  
Vol 138 (20) ◽  
pp. 6541-6549 ◽  
Author(s):  
Prasenjit Mahato ◽  
Nobuhiro Yanai ◽  
Melinda Sindoro ◽  
Steve Granick ◽  
Nobuo Kimizuka
Keyword(s):  
Energy Migration ◽  
Triplet Energy

Trap-site formation and trap-controlled triplet energy migration in phenanthrene copolymer films

1989 ◽  
Vol 22 (5) ◽  
pp. 2207-2213 ◽  
Author(s):  
Shinzaburo Ito ◽  
Norio Numata ◽  
Hideaki Katayama ◽  
Masahide Yamamoto
Keyword(s):  
Energy Migration ◽  
Site Formation ◽  
Trap Site ◽  
Triplet Energy ◽  
Copolymer Films
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