Najing Technology Corporation Limited

Zhejiang Zhuji United Chemicals Co., Ltd.

Yehua Su

Bangchi Chen

Tianhao Zhang

Xiaohua Yu

Jieping Shi

Guoping Cai

Yanhong Mao

Guangxu Li

Baozhong Hu

Jianxin Lu

Yuan Gao

Zhenghe Yang

This present disclosure provides a core-shell quantum dot, a preparation method thereof, and a light-emitting device containing the same. The core of the core-shell quantum dot is CdSeS, and the quantum dot shells include a first shell and a second shell, the first shell being selected from one or more of ZnSe, ZnSeSand CdZnS, the second shell covering the first shell being one of CdZnS and ZnS, the maximum emission peak of the core-shell quantum dot is less than or equal to 480 nm, 0<X<1, 0<Y<1, 0<Z<1. The CdSeScore has a smaller bandgap and a shallower HOMO energy level, making hole injection easier.

Core-shell quantum dot, preparation method thereof, and electroluminescent light-emitting device containing the same

A preparative method for carboxylic acids is disclosed in the present invention. The method is characterized in that: compounds (II) are reacted in the presence of hydrogen peroxide and base to produce target products (I), as represented by the following reaction scheme: wherein Ris aryl, pyridyl, pyrimidyl, pyridazinyl, pyrazinyl, benzothienyl, benzofuranyl, quinolinyl, isoquinolinyl, thiadiazolyl, Calkyl, Ccycloalkyl, Calkenyl, Calkynyl and hydrogen; Ris alkoxycarbonyl, alkylaminocarbonyl, aminocarbonyl, alkylthiolcarbonyl, cyano, sulfonyl, sulfinyl, carbonyl, aldehyde, carboxyl, nitro, alkyl and hydrogen; Ris alkoxycarbonyl, alkyl amido carbonyl, aminocarbonyl, cyano, sulfonyl, sulfinyl, carbonyl, carboxyl and nitro. The present invention has the following main benefits: cheap and readily available starting materials, safe processes, high yield, good quality, which facilitates industrial production.

Preparative method for carboxylic acids

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Zhejiang, China

Yehua Su