tailieunhanh - Tổng hợp composite huỳnh quang PMMA bằng phương pháp thiêu nhiệt sử dụng citric acid và ethylenediamine

Bài viết Tổng hợp composite huỳnh quang PMMA bằng phương pháp thiêu nhiệt sử dụng citric acid và ethylenediamine trình bày phương pháp chế tạo composite huỳnh quang bằng cách thiêu nhiệt hỗn hợp PMMA, citric acid và ethylenediamine ở nhiệt độ dưới 200oC. | TNU Journal of Science and Technology 227 16 62 - 67 THE THERMAL PREPARATION OF LUMINESCENT PMMA COMPOSITE USING CITRIC ACID AND ETHYLENEDIAMINE Mai Xuan Dung1 Ha Giu Quoc2 Nguyen Thi Lan Anh3 Tran Dai Luat1 Pham Thi Thuy Trang1 Pham Thi Kieu1 Nguyen Phuong Nam1 Nguyen Sinh Hung1 Nguyen Duc Anh1 Pham Thi Thanh Thanh1 Nguyen Thu Huyen1 Ha Thi Lam1 1 Hanoi Pedagogical University 2 2Can Tho University 3Yen Phu Middle School Bac Ninh ARTICLE INFO ABSTRACT Received 08 9 2022 Water resistant air-stable and luminescent composites have a great potential for outdoor light-conversion applications. Mixing luminescent Revised 07 10 2022 materials and polymers is a convenient method for the preparation of Published 10 10 2022 composites but it is requited by luminescence quenching induced by the aggregation of the luminescent component. Herein we have demonstrated KEYWORDS the preparation of luminescent composite by simple thermal annealing a mixture of PMMA citric acid and ethylenediamine at temperatures below PMMA 200oC. UV-Vis absorption and photoluminescent spectroscopies were Luminescent employed to study the optical properties of the luminescent composites. The resultant composite exhibits a characteristic absorption peak at 346 IPCA nm a broad emission spectrum maximizing at 460 nm and an excitation Thermal annealing peak at about 370 nm. The similarity in the absorption and emission Composite properties between the composite and a reference sample prepared by hydrothermal treatment a mixture of citric acid and ethylene diamine indicates that IPCA fluorophore formed homogeneously in PMMA accounts for the optical properties of the composite. TỔNG HỢP COMPOSITE HUỲNH QUANG PMMA BẰNG PHƢƠNG PHÁP THIÊU NHIỆT SỬ DỤNG CITRIC ACID VÀ ETHYLENEDIAMINE Mai Xuân Dũng1 Hà Giữ Quốc2 Nguyễn Thị Lan Anh3 Trần Đại Luật1 Phạm Thị Thùy Trang1 Phạm Thị Kiều1 Nguyễn Phƣơng Nam1 Nguyễn Sinh Hùng1 Nguyễn Đức Anh1 Phạm Thị Thanh Thanh1 Nguyễn Thu Huyền1 Hà Thị Lam1 1 Trường Đại học Sư phạm Hà