Photoswitchable quantum dots by controlling the photoinduced electron transfers

Jiwon Bang; Joonhyuck Park; Ranganathan Velu; Eunjin Yoon; Kyunghoon Lee; Sunghee Cho; Soonwook Cha; GeeSung Chae; Taiha Joo; Sungjee Kim

doi:10.1039/C2CC34002J

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Chemical Communications

Issue 73, 2012

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Photoswitchable quantum dots by controlling the photoinduced electron transfers

Jiwon Bang,^a Joonhyuck Park,^b Ranganathan Velu,^a Eunjin Yoon,^a Kyunghoon Lee,^c Sunghee Cho,^c Soonwook Cha,^c GeeSung Chae,^c Taiha Joo^a and Sungjee Kim*^a

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Department of Chemistry, Pohang University of Science and Technology (POSTECH), San 31, Hyojadong, Namgu, South Korea
E-mail: sungjee@postech.ac.kr ;
Fax: +82-54-2791484 ;
Tel: +82-54-2792108

School of Interdisciplinary Bioscience and Bioengineering, POSTECH, South Korea

Material Team 2, LG Display Co., Ltd. 1007, Deogeun-ri, Wollong-myeon, South Korea

Chem. Commun., 2012,48, 9174-9176

DOI: 10.1039/C2CC34002J
Received 05 Jun 2012, Accepted 25 Jul 2012
First published online 25 Jul 2012

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We report photoluminescence (PL) modulation of quantum dots (QDs) by photoinduced electron transfers from acridine-1,8-dione derivative surface ligands. Reversible PL switching upon many repeated cycles was demonstrated, as alternating on and off of the UV excitation for the surface ligand has successfully resulted in the QD PL modulation.

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