title: Strong Fluorescent Smart Organogel as a Dual Sensing Material for Volatile Acid and Organic Amine Vapors.
abstract: An L-phenylalanine derivative (C12PhBPCP) consisting of a strong emission fluorophore with benzoxazole and cyano groups is designed and synthesized to realize dual responses to volatile acid and organic amine vapors. The photophysical properties and self-assembly of the said derivative in the gel phase are also studied. C12PhBPCP can gelate organic solvents and self-assemble into 1 D nanofibers in the gels. UV/Vis absorption spectral results show H-aggregate formation during gelation, which indicates strong exciton coupling between fluorophores. Both wet gel and xerogel emit strong green fluorescence because the cyano group suppresses fluorescence quenching in the self-assemblies. Moreover, the xerogel film with strong green fluorescence can be used as a dual chemosensor for quantitative detection of volatile acid and organic amine vapors with fast response times and low detection limits owing to its large surface area and amplified fluorescence quenching. The detection limits are 796 ppt and 25 ppb for gaseous aniline and trifluoroacetic acid (TFA), respectively.
authors.affiliation: College of Chemistry, Jilin University, No. 2519 Jiefang Road, Changchun (P. R. China). xuepengchong@jlu.edu.cn.
authors.forename: Pengchong
authors.initials: P
authors.lastname: Xue
authors.affiliation: College of Chemistry, Jilin University, No. 2519 Jiefang Road, Changchun (P. R. China).
authors.forename: Boqi
authors.initials: B
authors.lastname: Yao
authors.affiliation: College of Chemistry, Jilin University, No. 2519 Jiefang Road, Changchun (P. R. China).
authors.forename: Panpan
authors.initials: P
authors.lastname: Wang
authors.affiliation: College of Chemistry, Jilin University, No. 2519 Jiefang Road, Changchun (P. R. China).
authors.forename: Peng
authors.initials: P
authors.lastname: Gong
authors.affiliation: College of Chemistry, Jilin University, No. 2519 Jiefang Road, Changchun (P. R. China).
authors.forename: Zhenqi
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: College of Chemistry, Jilin University, No. 2519 Jiefang Road, Changchun (P. R. China). luran@jlu.edu.cn.
authors.forename: Ran
authors.initials: R
authors.lastname: Lu
mesh_terms: D000588:Amines / Q000737:chemistry*; D000814:Aniline Compounds / Q000737:chemistry; D005453:Fluorescence; D005456:Fluorescent Dyes / Q000737:chemistry*; D005740:Gases; D005782:Gels; D057230:Limit of Detection; D057139:Nanofibers; D009930:Organic Chemicals / Q000737:chemistry; D010649:Phenylalanine / Q000031:analogs & derivatives / Q000737:chemistry; D012997:Solvents
chemical_list: D000588:Amines; D000814:Aniline Compounds; D005456:Fluorescent Dyes; D005740:Gases; D005782:Gels; D009930:Organic Chemicals; D012997:Solvents; C057718:6-(Dimethylamino)-2-((1E,3E)-4-(4-(dimethylamino)phenyl)-1,3-butadien-1-yl)-1-ethylquinolinium perchlorate; D010649:Phenylalanine; C023650:aniline
keywords: fluorescence; organic amines; sensors; volatile acids; xerogel film