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초록
A naphthalimide-indoline hybrid (1) was developed as a pH-sensitive turn-on fluorescent probe. Probe 1 displays a weak fluorescence intensity in pH span of 2.5-11.0 owing to a photo-induced electron transfer (PET) from the indoline moiety to the naphthalimide. However, the PET process is suppressed under the pH of 2.5, showing a strong fluorescence signal at 430 nm. The turn-on fluorescent change of 1 is selective for the acidity (H+) over other anions, metal ions, redox species and it displays a good reversibility. Moreover, glass TLC plates coated with probe I can readily detect acid vapors at an ambient atmosphere. (C) 2017 Elsevier Ltd. All rights reserved.
키워드
pH probe; Fluorescence turn-on; Naphthalimide-indoline hybrid; Photo-induced electron transfer; LIVING CELLS; PH; PROBE; EXPOSURE
- 제목
- Turn-on fluorescent detection of strong acids based on a naphthalimide-indoline hybrid
- 저자
- Lee, Jinju; Lee, Min Hee
- 발행일
- 2017-08
- 유형
- Article
- 권
- 58
- 호
- 32
- 페이지
- 3178 ~ 3182