Metallic Butterfly Wing Scales by Jiajun Gu Di Zhang & Yongwen Tan

Author:Jiajun Gu, Di Zhang & Yongwen Tan
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

The peak at 3370 cm−1 shifted back to 3434 cm−1 and became sharper after HAuCl4 was introduced. The amino groups were in complex with Au3+, reducing the associated bodies and hydrogen bonds. Meanwhile, the added ethylenediamine increased the primary amine and even secondary amine (ethylenediamine alkylation). Thus, the amine stretching peak near 3370 cm−1 was strengthened as compared to the amide I and II bands of original butterfly wings. This enhancement may even exist after the amine-Au complexation process.

As additional supporting evidence, after the EDA was introduced, the peaks corresponding to amide I at 1655 cm−1 and amide II at 1535 cm−1 shifted to lower wave numbers and moved back after the amine-Au complexation. This phenomenon could be attributed to the formation and deformation of hydroxyl bonds between amino and carbonyl groups due to the amine-Au complexation. All these results indicate that the amination of original butterfly wings via EDA is beneficial to the successive complexation process, providing an important basis for the subsequent electroless deposition.

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.