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

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

^b School of Interdisciplinary Bioscience and Bioengineering, POSTECH, South Korea

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

Abstract

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.

Chemical Communications

Photoswitchable quantum dots by controlling the photoinduced electron transfers†

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Photoswitchable quantum dots by controlling the photoinduced electron transfers

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