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| Type |
Poster Presentation |
| Area |
Material Chemistry |
| Room No. |
Exhibition Hall 2 |
| Time |
4월 19일 (금요일) 11:00~12:30 |
| Code |
MAT.P-431 |
| Subject |
Carbazole Dioxazine-containing fused ring molecules displaying halochromic behavior in solution and film state |
| Authors |
Youngun Kim, Jiwon Yoon1, Chae Yeong Kim1, Min Ju Cho, Dong Hoon Choi*
Department of Chemistry, Korea University, Korea
1Chemistry, Korea University, Korea
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| Abstract |
The halochromic effect was available to pigment based carbazole dioxazine (CzDxz) compound which embedded oxazine rings in the structure. Due to the poor solubility in organic solvents, CzDxz pigment was introduced and suggested with attachment of lengthy branched alkyl chains to the 9-position of each carbazole moiety, and moderate solubility in organic solvents including dichloromethane, chloroform, tetrahydrofuran was achieved. The effects of halochromism on the molecular structure, optical properties and the eventual sensor performance were investigated.
Application of chromophore based on a fused nine-ring to the heteroaromatic system exhibited unexpected halochromism with significant shifts in λmax as large as 256 nm. The shift in the light absorption induced the phenomenon of original color turning blank, which is seen as transparent by NIR absorption under acid addition. Thin film optical properties of CzDxz were also found useful as pH sensor capable of fast interaction under acid condition. Sensor with immediate response and discrete optical change and transparency has potentially wide applications including industrial hazard sensors and those sensors attached to optoelectronics which utilize its transparency. |
| E-mail |
musket@korea.ac.kr |
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123rd General Meeting of the KCS