Abnormal Fluorescence Behavior of Pyrene Functionalized Chitosan Films to Some Quenchers
✍ Scribed by Zhang Shu-Juan; Fang Yu; Hu Dao-Dao; Gao Gai-Ling
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 365 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0256-7660
No coin nor oath required. For personal study only.
✦ Synopsis
School
of Chembg. and Materials Science, S M N o d University, Xi'm , S M 710062, Chinu The Second Artillery Engineering Institue , Xi'an , Shaanxi 710025. Chinu Investigation of the Buomcmce behavior of a pyrew Punctionalized and C U ( N Q ) ~, hrs revealed that the monomer emission from the PSGCS film increased rather than decreased, whereas the exdmer emisdon decressed with the increme of time of duration after addition of KIor C ~I ( N @ ) ~. Both the imresSing and demeashg proin the system containing KI or C U ( N Q ) ~, for CHJNQ system, both the monomer emissonandtheexcimermisiioniwersed with infrcdudon ofthe gueneher, but the excimer emissioa only started to increase after an h -l o n g induction period. The position of the excimeremhion oftbe PSC-CS film did not change very much with addition of ICI or C U ( N Q ) ~. However, addition of C&NQ Illade the exdmer emission blue shifted for at 1 -20 nm indicating ford o n ofdistwted excimers or partiany overlapped eurimers. Ibe t l w m m c e respol~se ofthe 5 m to externel additions is semitive but is lowinseldvity. This property may make the 6hn use BP a novel senring material for monitoring the purity of water. chi-lilm (PSC-CS) to s ~m e ~u e n c h e r ~, inchding KI, CHSN@ cesses could last as long as20 min to40 min. unlike that observed Keywordr, chitosan, p F n e , fluorescence quenching, water purity