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Paper Abstract and Keywords
Presentation 2010-05-27 16:40
Material's design concept for organic highly efficient long lived room temperature phosphorescence by decreasing nonradiative process at excited triplet state
Kenro Totani (Tokyo Univ. of Agr & Tech.), Shuzo Hirata (Kyushu Univ.), Toshiyuki Watanabe (Tokyo Univ. of Agr & Tech.), Chihaya Adachi (Kyushu Univ.) OME2010-27 Link to ES Tech. Rep. Archives: OME2010-27
Abstract (in Japanese) (See Japanese page) 
(in English) Long lived room temperature phosphorescence (LL-RTP) is not observed under the atmosphere in organic materials since active thermal motion of dye and matrix quenches a long exited triplet state of dyes at RT and oxygen accelerates electron quenching in an excited triplet state of dyes due to triplet-triplet energy transfer from a dye to oxygen. Therefore, it has been reported that long excited lifetime more than second order and efficient long lived phosphorescence are usually observed when some organic dyes dispersed into matrix is frozen to 77 K. Here we report that aromatic carbons substituted with strong electron donors dispersed homogeneously into amorphous steroid compounds show highly efficient LL-RTP under the atmosphere.
Keyword (in Japanese) (See Japanese page) 
(in English) Phosphorescence / Long Lived Phosphorescence / / / / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 59, OME2010-27, pp. 51-53, May 2010.
Paper # OME2010-27 
Date of Issue 2010-05-20 (OME) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF OME2010-27 Link to ES Tech. Rep. Archives: OME2010-27

Conference Information
Committee OME  
Conference Date 2010-05-27 - 2010-05-27 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Organic Materials, General 
Paper Information
Registration To OME 
Conference Code 2010-05-OME 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Material's design concept for organic highly efficient long lived room temperature phosphorescence by decreasing nonradiative process at excited triplet state 
Sub Title (in English)  
Keyword(1) Phosphorescence  
Keyword(2) Long Lived Phosphorescence  
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1st Author's Name Kenro Totani  
1st Author's Affiliation Tokyo Universitu. of Agriculture and Technology (Tokyo Univ. of Agr & Tech.)
2nd Author's Name Shuzo Hirata  
2nd Author's Affiliation Kyushu University. (Kyushu Univ.)
3rd Author's Name Toshiyuki Watanabe  
3rd Author's Affiliation Tokyo Universitu. of Agriculture and Technology (Tokyo Univ. of Agr & Tech.)
4th Author's Name Chihaya Adachi  
4th Author's Affiliation Kyushu University. (Kyushu Univ.)
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Speaker Author-1 
Date Time 2010-05-27 16:40:00 
Presentation Time 20 minutes 
Registration for OME 
Paper # OME2010-27 
Volume (vol) vol.110 
Number (no) no.59 
Page pp.51-53 
#Pages
Date of Issue 2010-05-20 (OME) 


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