Shandong University

Bloomage Freda Biopharm Co., Ltd.

Ning Feng

Xueping Guo

Di Sun

Xia Xin

Aihua Liu

Yihong Luan

Guanfeng Wang

Yanli Shi

Haina Li

Wei Xue

Shujin Zhou

Shanshan Zhang

Liping Qiao

Haiying Wang

A preparation process and LED application of copper nanoclusters (Cu NCs) fluorescent nanoflowers with high quantum yield by dissolving CuIinto dimethyl sulfoxide (DMSO) and then adding glycerol, it self-assembles into Cu NCs s fluorescent nanoflowers. The CuIfluorescent nanoflowers prepared by the invention have outstanding optical properties, a quantum yield up to 64.5%, and can be made into a series of different luminous colors and excellent stability LED only with commercial blue phosphor, such as yellow-green, sky blue, white, wherein according to the mass ratio of 4:5 ratio mix can be prepared white light emission LED. Fluorescent Cu NCs can successfully replace traditional light conversion materials and prepare environmentally friendly LEDs.

Preparation process and LED application of copper nanoclusters fluorescent nanoflowers with high quantum yield

The present invention provides asp. having a deposit access number of CGMCC NO. 5744 and a hyaluronidase produced by theand the amino acid sequence of the hyaluronidase is shown in SEQ ID NO: 2. The present invention further relates to a process for preparing oligomeric hyaluronic acid or salts thereof or low-molecular-weight hyaluronic acid or salts thereof by using theor the hyaluronidase produced thereby. The produced oligomeric hyaluronates or low-molecular-weight hyaluronates have advantages such as good transdermal absorption ability, high purity, no cytotoxicity, potent antioxidant ability. The present invention also provides use of thehaving a deposit access number of CGMCC NO. 5744, or the hyaluronidase, oligomeric hyaluronates or salts thereof, low-molecular-weight hyaluronates or salts thereof produced by thein the fields of osmetics, food products and medicines.

Bacillus, hyaluronidase, and uses thereof

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Jinan, China

Ning Feng