Efficient Light‐Harvesting Systems with Tunable Emission through Controlled Precipitation in Confined Nanospace

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2019-02-04
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Li, Chuanqi
Zhang, Jing
Zhang, Shiyong
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Zhao, Yan
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Chemistry

The Department of Chemistry seeks to provide students with a foundation in the fundamentals and application of chemical theories and processes of the lab. Thus prepared they me pursue careers as teachers, industry supervisors, or research chemists in a variety of domains (governmental, academic, etc).

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The Department of Chemistry was founded in 1880.

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1880-present

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Light harvesting is a key step in photosynthesis but creation of synthetic light‐harvesting systems (LHSs) with high efficiencies has been challenging. When donor and acceptor dyes with aggregation‐induced emission were trapped within the interior of cross‐linked reverse vesicles, LHSs were obtained readily through spontaneous hydrophobically driven aggregation of the dyes in water. Aggregation in the confined nanospace was critical to the energy transfer and the light‐harvesting efficiency. The efficiency of the excitation energy transfer (EET) reached 95 % at a donor/acceptor ratio of 100:1 and the energy transfer was clearly visible even at a donor/acceptor ratio of 10 000:1. Multicolor emission was achieved simply by tuning the donor/acceptor feed ratio in the preparation and the quantum yield of white light emission from the system was 0.38, the highest reported for organic materials in water to date.

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This is the peer-reviewed version of the following article: Li, Chuanqi, Jing Zhang, Shiyong Zhang, and Yan Zhao. "Efficient Light‐Harvesting Systems with Tunable Emission through Controlled Precipitation in Confined Nanospace." Angewandte Chemie International Edition 58, no. 6 (2019): 1643-1647, which has been published in final form at DOI: 10.1002/anie.201812146. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. Posted with permission.

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Tue Jan 01 00:00:00 UTC 2019
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