title: Fluorescence quenching of carbazole by 2-chloro-3,5-dinitrobenzotrifluoride-ethylamines intermolecular charge-transfer complex.
abstract: The interaction between carbazole and 2-chloro-3,5-dinitrobenzotrifluoride-ethylamines, (mono-, di-, and triethylamine) charge-transfer complex in DMSO was studied using fluorescence spectroscopy. The positive deviation from linearity has been observed in the Stern-Volmer plots. The experimental results showed that the fluorescence of carbazole was quenched by 2-chloro-3,5-dinitrobenzotrifluoride-ethylamines charge-transfer complex through a combined quenching procedure. The Stern-Volmer quenching constants, K(SV), have been determined and found to be greater quenching efficiency of ethylamine. Carbazole/2-chloro-3,5-dinitrobenzotrifluoride loaded PMMA film was exposed to ethylamine vapor, where the resulting absorption and emission changing properties were clearly monitored.
authors.affiliation: BK21 FTIT Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University, Daejeon 305-764, Republic of Korea.
authors.forename: Eun-Mi
authors.initials: EM
authors.lastname: Lee
authors.forename: Seon-Yeong
authors.initials: SY
authors.lastname: Gwon
authors.forename: Young-A
authors.initials: YA
authors.lastname: Son
authors.forename: Sung-Hoon
authors.initials: SH
authors.lastname: Kim
mesh_terms: D002227:Carbazoles / Q000737:chemistry*; D004121:Dimethyl Sulfoxide / Q000737:chemistry; D005021:Ethylamines / Q000737:chemistry*; D005453:Fluorescence; D005464:Fluorobenzenes / Q000737:chemistry*; D009574:Nitro Compounds / Q000737:chemistry*; D013050:Spectrometry, Fluorescence
chemical_list: D002227:Carbazoles; D005021:Ethylamines; D005464:Fluorobenzenes; D009574:Nitro Compounds; C041514:carbazole; C539305:4-chloro-3,5-dinitrobenzotrifluoride; D004121:Dimethyl Sulfoxide