Investigation of the Q  x  –Q  y   Equilibrium in a Metal‐Free Phthalocyanine | Zendy

Baeten Yannick | Zendy; Fron Eduard | Zendy; Ruzié Christian | Zendy; Geerts Yves Henri | Zendy; Van Der Auweraer Mark | Zendy

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Investigation of the Q x –Q y Equilibrium in a Metal‐Free Phthalocyanine

Author(s) -

Baeten Yannick,

Fron Eduard,

Ruzié Christian,

Geerts Yves Henri,

Van Der Auweraer Mark

Publication year - 2015

Publication title -

chemphyschem

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.016

H-Index - 140

eISSN - 1439-7641

pISSN - 1439-4235

DOI - 10.1002/cphc.201500386

Subject(s) - phthalocyanine , excited state , fluorescence , metal , femtosecond , transition metal , chemistry , absorption (acoustics) , ultrafast laser spectroscopy , analytical chemistry (journal) , photochemistry , absorption spectroscopy , materials science , atomic physics , laser , optics , organic chemistry , physics , composite material , catalysis

Phthalocyanines (Pcs) have attracted a lot of interest as small molecules for organic electronics. However, some excited‐state properties of metal‐free phthalocyanines, as for example, the dynamics of the transition between the nondegenerate Q x and Q y states in a metal‐free phthalocyanine, have not been fully established. This effect results in a blue‐shifted shoulder with low intensity in the Pc fluorescence spectrum. This shoulder was suggested to be related to emission from the more energetic Q y state. By using ultrafast femtosecond transient absorption, we have found a clear equilibrium between the Q x and Q y state of metal‐free phthalocyanines in solution.

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