Polyamine Linear Chains Bearing Two Identical Terminal Aromatic Units. Evidence for a Photo Induced Bending Movement

M. Alexandra Bernardo; Sérgio Alves; Fernando Pina; J. Seixas De Melo; M. Teresa Albelda; Enrique Garcia-España; José Miguel Llinares; Conxa Soriano; Santiago V. Luis

doi:10.1080/10610270108029459

Polyamine Linear Chains Bearing Two Identical Terminal Aromatic Units. Evidence for a Photo Induced Bending Movement

M. Alexandra Bernardo, Sérgio Alves, Fernando Pina, J. Seixas De Melo, M. Teresa Albelda, Enrique Garcia-España, José Miguel Llinares, Conxa Soriano, Santiago V. Luis

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

Several chemosensors bearing a fluorescent unit at both ends of a linear polyamine chain were synthesised. The protonation as well as the association constants with Cu²⁺ and Zn²⁺ were determined by potentiometry in 0.15 mol dm^-3 NaCl at 298.1K. In the case of 1,16-bis(1-naphthylmethyl)-1,4,7,10, 13,16-hexaazadecane hexahydrochloride (L1), formation of an excimer emission in aqueous acidic solutions was observed. The system was characterized by steady state fluorescence emission and by time resolved fluorescence. In the ground state the molecule is expected to adopt a more or less linear conformation, while in the excited state a bending movement of the chain must occur in order to allow the excimer emission. The system can be viewed as an elementary machine driven by light.

Original language	English
Pages (from-to)	435-445
Number of pages	11
Journal	Supramolecular Chemistry
Volume	13
Issue number	3
DOIs	https://doi.org/10.1080/10610270108029459
Publication status	Published - 2001
Externally published	Yes

Keywords

Chemosensors
Excimer
Molecular machines
Polyamine

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10.1080/10610270108029459

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title = "Polyamine Linear Chains Bearing Two Identical Terminal Aromatic Units. Evidence for a Photo Induced Bending Movement",

abstract = "Several chemosensors bearing a fluorescent unit at both ends of a linear polyamine chain were synthesised. The protonation as well as the association constants with Cu2+ and Zn2+ were determined by potentiometry in 0.15 mol dm-3 NaCl at 298.1K. In the case of 1,16-bis(1-naphthylmethyl)-1,4,7,10, 13,16-hexaazadecane hexahydrochloride (L1), formation of an excimer emission in aqueous acidic solutions was observed. The system was characterized by steady state fluorescence emission and by time resolved fluorescence. In the ground state the molecule is expected to adopt a more or less linear conformation, while in the excited state a bending movement of the chain must occur in order to allow the excimer emission. The system can be viewed as an elementary machine driven by light.",

keywords = "Chemosensors, Excimer, Molecular machines, Polyamine",

author = "Bernardo, {M. Alexandra} and S{\'e}rgio Alves and Fernando Pina and {De Melo}, {J. Seixas} and Albelda, {M. Teresa} and Enrique Garcia-Espa{\~n}a and Llinares, {Jos{\'e} Miguel} and Conxa Soriano and Luis, {Santiago V.}",

year = "2001",

doi = "10.1080/10610270108029459",

language = "English",

volume = "13",

pages = "435--445",

journal = "Supramolecular Chemistry",

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T1 - Polyamine Linear Chains Bearing Two Identical Terminal Aromatic Units. Evidence for a Photo Induced Bending Movement

AU - Bernardo, M. Alexandra

AU - Alves, Sérgio

AU - Pina, Fernando

AU - De Melo, J. Seixas

AU - Albelda, M. Teresa

AU - Garcia-España, Enrique

AU - Llinares, José Miguel

AU - Soriano, Conxa

AU - Luis, Santiago V.

PY - 2001

Y1 - 2001

N2 - Several chemosensors bearing a fluorescent unit at both ends of a linear polyamine chain were synthesised. The protonation as well as the association constants with Cu2+ and Zn2+ were determined by potentiometry in 0.15 mol dm-3 NaCl at 298.1K. In the case of 1,16-bis(1-naphthylmethyl)-1,4,7,10, 13,16-hexaazadecane hexahydrochloride (L1), formation of an excimer emission in aqueous acidic solutions was observed. The system was characterized by steady state fluorescence emission and by time resolved fluorescence. In the ground state the molecule is expected to adopt a more or less linear conformation, while in the excited state a bending movement of the chain must occur in order to allow the excimer emission. The system can be viewed as an elementary machine driven by light.

AB - Several chemosensors bearing a fluorescent unit at both ends of a linear polyamine chain were synthesised. The protonation as well as the association constants with Cu2+ and Zn2+ were determined by potentiometry in 0.15 mol dm-3 NaCl at 298.1K. In the case of 1,16-bis(1-naphthylmethyl)-1,4,7,10, 13,16-hexaazadecane hexahydrochloride (L1), formation of an excimer emission in aqueous acidic solutions was observed. The system was characterized by steady state fluorescence emission and by time resolved fluorescence. In the ground state the molecule is expected to adopt a more or less linear conformation, while in the excited state a bending movement of the chain must occur in order to allow the excimer emission. The system can be viewed as an elementary machine driven by light.

KW - Chemosensors

KW - Excimer

KW - Molecular machines

KW - Polyamine

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U2 - 10.1080/10610270108029459

DO - 10.1080/10610270108029459

M3 - Article

AN - SCOPUS:0035564692

SN - 1061-0278

VL - 13

SP - 435

EP - 445

JO - Supramolecular Chemistry

JF - Supramolecular Chemistry

IS - 3

ER -

Polyamine Linear Chains Bearing Two Identical Terminal Aromatic Units. Evidence for a Photo Induced Bending Movement

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Keywords

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