abs

학술발표회초록보기

초록문의 abstract@kcsnet.or.kr

결제문의 member@kcsnet.or.kr

현재 가능한 작업은 아래와 같습니다.
  • 03월 02일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제109회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Synthesis and Colorimetric Turn-On Fluoride Sensing Properties of a Cationic Triarylborane Bearing Benzothiazolium

등록일
2012년 1월 27일 12시 34분 53초
접수번호
0011
발표코드
INOR.P-112 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 25일 (수요일) 18:00~21:00
발표형식
포스터
발표분야
무기화학
저자 및
공동저자
송기철, 이민형1, 도영규
KAIST 화학과, Korea
1울산대학교 화학과, Korea
We have synthesized a novel cationic triarylborane bearing benzothiazolium moiety, 2-(4'-dimesitylborylphenyl)-3-methylbenzo[d]thiazol-3-ium. Upon addition of fluoride, the cationic triarylborane undergoes a red-shift of the absorption band which tails over visible region, giving rise to the color change of the solution from colorless to yellow. As a result, color change could be easily observed with naked eye even in the presence of very low level of fluoride ions in THF/H2O (9/1, v/v). The fluoride binding constant in THF/H2O (9/1, v/v) is calculated to be 1.3 x 104 M-1 that is much greater than that of a neutral triarylborane (K = 4.2 x 102 M-1). DFT calculation results suggest that the absorption process in the fluoroborate is involved with ∏(Mes) → ∏*(phenylbenzothiazolium) intramolecular charge transfer and the greater elevation of the ∏(Mes) donor level is responsible for the turn-on colorimetric response of the cationic triarylborane. Details of synthesis, characterization, DFT calculation, and fluoride sensing properties of the cationic triarylborane will be discussed.

상단으로