Directions of the Electronic Absorption Transition Moments in ͹-Substituted 4-Dimethylamino-trans-Styrenes

A. Kawski; Z. Gryczyński; I. Gryczyński; J. Kuśba

doi:10.1515/zna-1992-0305

Directions of the Electronic Absorption Transition Moments in ͹-Substituted 4-Dimethylamino-trans-Styrenes

A. Kawski, Z. Gryczyński, I. Gryczyński, J. Kuśba

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Abstract

Absorption transition moment directions of the diphenylphosphinyl (2a) and methylsulphonyl (3a) ͹-substtuted in 4-dimethylamino-trans-styrenes were determined in stretched poylvinyl alcohol (PVA) films based on measurements of the absorption anisotropies. It has been found that the long-wave absorption spectrum consists of two bands corresponding to differently directed transition moments. The transition moment of the intensive long-wave 1La band is lies along the long axis of these molecules whereas that of the short-wave 1Lbband is oriented at φ = 38° for 2a and φ= 35° for 3a relative to the transition moment direction of the 1Laband.

Original language	English
Pages (from-to)	471-474
Number of pages	4
Journal	Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences
Volume	47
Issue number	3
DOIs	https://doi.org/10.1515/zna-1992-0305
State	Published - 1 Mar 1992

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title = "Directions of the Electronic Absorption Transition Moments in ͹-Substituted 4-Dimethylamino-trans-Styrenes",

abstract = "Absorption transition moment directions of the diphenylphosphinyl (2a) and methylsulphonyl (3a) ͹-substtuted in 4-dimethylamino-trans-styrenes were determined in stretched poylvinyl alcohol (PVA) films based on measurements of the absorption anisotropies. It has been found that the long-wave absorption spectrum consists of two bands corresponding to differently directed transition moments. The transition moment of the intensive long-wave 1La band is lies along the long axis of these molecules whereas that of the short-wave 1Lbband is oriented at φ = 38° for 2a and φ= 35° for 3a relative to the transition moment direction of the 1Laband.",

author = "A. Kawski and Z. Gryczy{\'n}ski and I. Gryczy{\'n}ski and J. Ku{\'s}ba",

note = "Funding Information: This work was supported by grant Nr. 20283 9101 from the Committee for Scientific Research (Warsaw) and performed partially at the Center for Fluorescence Spectroscopy, NSF DIR-8710401.",

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doi = "10.1515/zna-1992-0305",

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T1 - Directions of the Electronic Absorption Transition Moments in ͹-Substituted 4-Dimethylamino-trans-Styrenes

AU - Kawski, A.

AU - Gryczyński, Z.

AU - Gryczyński, I.

AU - Kuśba, J.

N1 - Funding Information: This work was supported by grant Nr. 20283 9101 from the Committee for Scientific Research (Warsaw) and performed partially at the Center for Fluorescence Spectroscopy, NSF DIR-8710401.

PY - 1992/3/1

Y1 - 1992/3/1

N2 - Absorption transition moment directions of the diphenylphosphinyl (2a) and methylsulphonyl (3a) ͹-substtuted in 4-dimethylamino-trans-styrenes were determined in stretched poylvinyl alcohol (PVA) films based on measurements of the absorption anisotropies. It has been found that the long-wave absorption spectrum consists of two bands corresponding to differently directed transition moments. The transition moment of the intensive long-wave 1La band is lies along the long axis of these molecules whereas that of the short-wave 1Lbband is oriented at φ = 38° for 2a and φ= 35° for 3a relative to the transition moment direction of the 1Laband.

AB - Absorption transition moment directions of the diphenylphosphinyl (2a) and methylsulphonyl (3a) ͹-substtuted in 4-dimethylamino-trans-styrenes were determined in stretched poylvinyl alcohol (PVA) films based on measurements of the absorption anisotropies. It has been found that the long-wave absorption spectrum consists of two bands corresponding to differently directed transition moments. The transition moment of the intensive long-wave 1La band is lies along the long axis of these molecules whereas that of the short-wave 1Lbband is oriented at φ = 38° for 2a and φ= 35° for 3a relative to the transition moment direction of the 1Laband.

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Directions of the Electronic Absorption Transition Moments in ͹-Substituted 4-Dimethylamino-trans-Styrenes

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