CRCU

Chemical Research in Chinese Universities ›› 2012, Vol. 28 ›› Issue (3): 434-437.

• Articles • Previous Articles     Next Articles

Promising Ultraviolet Absorbers—Novel Guanine Analogs Having Significantly Improved Ultraviolet Absorption Capacity and Dissipating the Energy of Absorbed Photons by Nonradiative Decay Mechanism

HAN Song-zhe, WU Yu-ting, ZHANG Meng, JIAO Jia-jun   

  1. School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
  • Received:2011-06-29 Revised:2011-09-02 Online:2012-05-25 Published:2012-05-03
  • Contact: JIAO Jia-jun E-mail:jiaojj@ecust.edu.cn
  • Supported by:

    Supported by the Foundation for University Key Teachers from the Ministry of Education of China(No.0024951).

PDF (PC)

Abstract: Structural properties of nucleobase underlie their ultrafast excited-state dynamics and low fluorescence quantum yields, which cause effectively nonradiative decay process and render them like sunscreens. Thus, eight guanine analogs[N-2-(2'-nitrobenzoyl)-guanine, N-2-(3'-nitrobenzoyl)-guanine, N-2-(4'-nitrobenzoyl)-guanine, N-2-(2'-hydroxybenzoyl)-guanine, N-2-(4'-methoxylbenzoyl)-guanine, N-2-(4'-chloricbenzoyl)-guanine, N-2-(4'- methylicbenzoyl)- guanine and N-2-(3',5'-dinitrobenzoyl)-guanine] with different substituted benzoyls, except N-2-(4'-chloricbenzoyl)-guanine, were newly synthesized. In contrast with guanine, they exhibit wider ultraviolet absorbent range, higher molar extinction coefficient and lower fluorescence intensity.

Key words: Guanine, Ultraviolet absorber, Acidamide