SEARCH

SEARCH BY CITATION

Chemistry Terms

Choose one or more boxes to highlight terms.

Keywords:

  • cholesterol;
  • fluorescence;
  • hydrogen chloride;
  • oligomers;
  • sensors

Abstract

A novel fluorescently active co-oligomer (P1) was designed and prepared by alternative co-polymerization of oligo(p-phenyleneethynylene) (OPE), possessing two cholesterol-containing side chains, and ethanediamine. A control co-oligomer (P2) possessing similar structure to P1 was also prepared, but in this case the OPE bears no side chains. P1 and P2 have been used for the fabrication of two fluorescent films, film 1 and film 2, respectively. Fluorescence studies demonstrated that the emission of film 1 is sensitive and selective to the presence of trace amounts of HCl in air. In contrast, film 2 shows no such response. The quenching has been attributed to the protonation of the imino groups within the oligomer chains, and the difference in the sensing behaviors of the two films was rationalized by supposing the existence of molecular channels in film 1. The proposed mechanism is supported by the results from additional experiments and theoretical calculations. Furthermore, the film as fabricated is robust, and thereby it is believed that film 1 has the potential to be developed into a new generation of sensitive and selective HCl sensor.

  • thumbnail image

Featured Compounds

VIEW

  1. 1 - 6
Compound 1
Molecular Weight:577.762
Molecular Formula:C35H61BrO
InChIKey:LAHQMXINJRUNQT-KTCHMVDFSA-N
View compound in article | Full details | Search for this compound
Compound 2
Molecular Weight:1355.6042
Molecular Formula:C76H124I2O4
InChIKey:LZLMLWDQMKVPIT-WSBBZWTGSA-N
View compound in article | Full details | Search for this compound
Compound 3
Molecular Weight:1360.0662
Molecular Formula:C94H134O6
InChIKey:UEMUCPLPLQWLDS-STJHMSMLSA-N
View compound in article | Full details | Search for this compound
Compound 4
Molecular Weight:334.3668
Molecular Formula:C24H14O2
InChIKey:UBVTYTLZFMRCCC-UHFFFAOYSA-N
View compound in article | Full details | Search for this compound
Compound P1
Molecular Weight:1388.1656
Molecular Formula:Not Available
InChIKey:Not Available
View compound in article | Full details | Search for this compound
Compound P2
Molecular Weight:362.4663
Molecular Formula:Not Available
InChIKey:Not Available
View compound in article | Full details | Search for this compound

VIEW

  1. 1 - 6