Supramolecular interactions of hexacyanocobaltate(III) with polyamine receptors containing a terminal anthracene sensor

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The fluorescence emission properties of a series of chemosensors containing a polyamine receptor bearing an anthracene signaling unit were studied. The fluorescence emission intensity is dependent on the protonation degree of the receptor, the fully protonated form exhibiting the highest emission intensity. By removing protons from the nitrogens a quenching effect can be observed, due to an electron-transfer from the amine to the excited fluorophore. The rate constant of the quenching process is exponentially dependent on the distance of the nitrogen from which the electron is transferred (β=0.6 ̊-1). The ability of the chemosensors for signaling anions was tested through the model anion hexacyanocobaltate(III). The temperature dependence of the association constants shows that at least for this compound, the change in solvation entropy is probably the controlling parameter to account for the binding.

Original languageEnglish
Pages (from-to)253-258
Number of pages6
JournalJournal of Photochemistry and Photobiology A: Chemistry
Volume159
Issue number3
DOIs
Publication statusPublished - 31 Jul 2003

Fingerprint

Anthracene
Polyamines
anthracene
Anions
Quenching
Bearings (structural)
Nitrogen
Negative ions
Fluorescence
Fluorophores
Electrons
Protonation
sensors
Solvation
Sensors
quenching
anions
Amines
Protons
nitrogen

Keywords

  • Anthracene
  • Chemical sensors
  • Fluorescent
  • Polyamine
  • Supramolecular

Cite this

@article{7ca6962208bb4c48b5ebffc27a261539,
title = "Supramolecular interactions of hexacyanocobaltate(III) with polyamine receptors containing a terminal anthracene sensor",
abstract = "The fluorescence emission properties of a series of chemosensors containing a polyamine receptor bearing an anthracene signaling unit were studied. The fluorescence emission intensity is dependent on the protonation degree of the receptor, the fully protonated form exhibiting the highest emission intensity. By removing protons from the nitrogens a quenching effect can be observed, due to an electron-transfer from the amine to the excited fluorophore. The rate constant of the quenching process is exponentially dependent on the distance of the nitrogen from which the electron is transferred (β=0.6 ̊-1). The ability of the chemosensors for signaling anions was tested through the model anion hexacyanocobaltate(III). The temperature dependence of the association constants shows that at least for this compound, the change in solvation entropy is probably the controlling parameter to account for the binding.",
keywords = "Anthracene, Chemical sensors, Fluorescent, Polyamine, Supramolecular",
author = "Laura Rodr{\'i}guez and S{\'e}rgio Alves and Lima, {Jo{\~a}o C.} and Parola, {A. Jorge} and Fernando Pina and Concepci{\'o}n Soriano and Teresa Albelda and Enrique Garc{\'i}a-Espa{\~n}a",
year = "2003",
month = "7",
day = "31",
doi = "10.1016/S1010-6030(03)00173-4",
language = "English",
volume = "159",
pages = "253--258",
journal = "Journal of Photochemistry and Photobiology A: Chemistry",
issn = "1010-6030",
publisher = "Elsevier",
number = "3",

}

TY - JOUR

T1 - Supramolecular interactions of hexacyanocobaltate(III) with polyamine receptors containing a terminal anthracene sensor

AU - Rodríguez, Laura

AU - Alves, Sérgio

AU - Lima, João C.

AU - Parola, A. Jorge

AU - Pina, Fernando

AU - Soriano, Concepción

AU - Albelda, Teresa

AU - García-España, Enrique

PY - 2003/7/31

Y1 - 2003/7/31

N2 - The fluorescence emission properties of a series of chemosensors containing a polyamine receptor bearing an anthracene signaling unit were studied. The fluorescence emission intensity is dependent on the protonation degree of the receptor, the fully protonated form exhibiting the highest emission intensity. By removing protons from the nitrogens a quenching effect can be observed, due to an electron-transfer from the amine to the excited fluorophore. The rate constant of the quenching process is exponentially dependent on the distance of the nitrogen from which the electron is transferred (β=0.6 ̊-1). The ability of the chemosensors for signaling anions was tested through the model anion hexacyanocobaltate(III). The temperature dependence of the association constants shows that at least for this compound, the change in solvation entropy is probably the controlling parameter to account for the binding.

AB - The fluorescence emission properties of a series of chemosensors containing a polyamine receptor bearing an anthracene signaling unit were studied. The fluorescence emission intensity is dependent on the protonation degree of the receptor, the fully protonated form exhibiting the highest emission intensity. By removing protons from the nitrogens a quenching effect can be observed, due to an electron-transfer from the amine to the excited fluorophore. The rate constant of the quenching process is exponentially dependent on the distance of the nitrogen from which the electron is transferred (β=0.6 ̊-1). The ability of the chemosensors for signaling anions was tested through the model anion hexacyanocobaltate(III). The temperature dependence of the association constants shows that at least for this compound, the change in solvation entropy is probably the controlling parameter to account for the binding.

KW - Anthracene

KW - Chemical sensors

KW - Fluorescent

KW - Polyamine

KW - Supramolecular

UR - http://www.scopus.com/inward/record.url?scp=0037502599&partnerID=8YFLogxK

U2 - 10.1016/S1010-6030(03)00173-4

DO - 10.1016/S1010-6030(03)00173-4

M3 - Article

VL - 159

SP - 253

EP - 258

JO - Journal of Photochemistry and Photobiology A: Chemistry

JF - Journal of Photochemistry and Photobiology A: Chemistry

SN - 1010-6030

IS - 3

ER -