Control of Excited-State Conformations in B,N-Acenes

Zhenpin Lu; Henrik Quanz; Julia Ruhl; Georg Albrecht; Christian Logemann; Derck Schlettwein; Peter R. Schreiner; Hermann A. Wegner

doi:10.1002/anie.201814104

Control of Excited-State Conformations in B,N-Acenes

Zhenpin Lu
, Henrik Quanz
, Julia Ruhl
, Georg Albrecht
, Christian Logemann
, Derck Schlettwein
, Peter R. Schreiner
, Hermann A. Wegner^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

12 Citations (Scopus)

Abstract

We present a new concept to control the conformations of molecules in the excited state through harvesting negative hyperconjugation. The strategy was realized with the 2,3,1,4-benzodiazadiborinane scaffold, which was prepared by a new synthetic procedure. Photochemical studies identified dual light emission, which was assigned to well-defined conformers. The emission at longer wavelength can be switched off by restricting the rotational degrees of freedom in the solid state as well as by controlling the energy levels of the excited states through adjusting the solvent polarity.

Original language	English
Pages (from-to)	4259-4263
Journal	Angewandte Chemie - International Edition
Volume	58
Issue number	13
DOIs	https://doi.org/10.1002/anie.201814104
Publication status	Published - 22 Mar 2019
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

azaborines
azobenzenes
B,N-heterocycles
dual fluorescence
synthetic methods

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10.1002/anie.201814104

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title = "Control of Excited-State Conformations in B,N-Acenes",

abstract = "We present a new concept to control the conformations of molecules in the excited state through harvesting negative hyperconjugation. The strategy was realized with the 2,3,1,4-benzodiazadiborinane scaffold, which was prepared by a new synthetic procedure. Photochemical studies identified dual light emission, which was assigned to well-defined conformers. The emission at longer wavelength can be switched off by restricting the rotational degrees of freedom in the solid state as well as by controlling the energy levels of the excited states through adjusting the solvent polarity.",

keywords = "azaborines, azobenzenes, B,N-heterocycles, dual fluorescence, synthetic methods",

author = "Zhenpin Lu and Henrik Quanz and Julia Ruhl and Georg Albrecht and Christian Logemann and Derck Schlettwein and Schreiner, \{Peter R.\} and Wegner, \{Hermann A.\}",

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volume = "58",

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T1 - Control of Excited-State Conformations in B,N-Acenes

AU - Lu, Zhenpin

AU - Quanz, Henrik

AU - Ruhl, Julia

AU - Albrecht, Georg

AU - Logemann, Christian

AU - Schlettwein, Derck

AU - Schreiner, Peter R.

AU - Wegner, Hermann A.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2019/3/22

Y1 - 2019/3/22

N2 - We present a new concept to control the conformations of molecules in the excited state through harvesting negative hyperconjugation. The strategy was realized with the 2,3,1,4-benzodiazadiborinane scaffold, which was prepared by a new synthetic procedure. Photochemical studies identified dual light emission, which was assigned to well-defined conformers. The emission at longer wavelength can be switched off by restricting the rotational degrees of freedom in the solid state as well as by controlling the energy levels of the excited states through adjusting the solvent polarity.

AB - We present a new concept to control the conformations of molecules in the excited state through harvesting negative hyperconjugation. The strategy was realized with the 2,3,1,4-benzodiazadiborinane scaffold, which was prepared by a new synthetic procedure. Photochemical studies identified dual light emission, which was assigned to well-defined conformers. The emission at longer wavelength can be switched off by restricting the rotational degrees of freedom in the solid state as well as by controlling the energy levels of the excited states through adjusting the solvent polarity.

KW - azaborines

KW - azobenzenes

KW - B,N-heterocycles

KW - dual fluorescence

KW - synthetic methods

UR - https://www.scopus.com/pages/publications/85061789726

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85061789726&origin=recordpage

U2 - 10.1002/anie.201814104

DO - 10.1002/anie.201814104

M3 - RGC 21 - Publication in refereed journal

C2 - 30657239

SN - 1433-7851

VL - 58

SP - 4259

EP - 4263

JO - Angewandte Chemie - International Edition

JF - Angewandte Chemie - International Edition

IS - 13

ER -

Control of Excited-State Conformations in B,N-Acenes

Abstract

Bibliographical note

Research Keywords

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