Cookies

We use cookies to ensure that we give you the best experience on our website. By continuing to browse this repository, you give consent for essential cookies to be used. You can read more about our Privacy and Cookie Policy.


Durham Research Online
You are in:

Synthesis and chiroptical properties of hexa-, octa-, and decaazaborahelicenes : influence of helicene size and of the number of boron atoms.

Shen, C. and Srebro-Hooper, M. and Jean, M. and Vanthuyne, N. and Toupet, L. and Williams, J. A. G. and Torres, A. R. and Riives, A. J. and Muller, G. and Autschbach, J. and Crassous, J. (2017) 'Synthesis and chiroptical properties of hexa-, octa-, and decaazaborahelicenes : influence of helicene size and of the number of boron atoms.', Chemistry : a European journal., 23 (2). pp. 407-418.

Abstract

Four members of a new class of cycloborylated hexa-, octa-, and deca-helicenes (1 a–d) have been prepared in enantiopure form, along with two cycloplatinated deca-helicenes (1 d′, 1 d1), further extending the family of cycloplatinated hexa- and octa-helicenes reported previously. The azabora[n]helicenes display intense electronic circular dichroism and large optical rotations; the dependence of the optical activity on the size of the helix (n=6, 8, 10) and the number of boron atoms (1 or 2) has been examined in detail both experimentally and theoretically. The photophysical properties (nonpolarized and circularly polarized luminescence) of these new fluorescent organic helicenes have been measured and compared with the corresponding organometallic phosphorescent cycloplatinated derivatives (1 a1–d1).

Item Type:Article
Full text:(AM) Accepted Manuscript
Download PDF
(3081Kb)
Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1002/chem.201604398
Publisher statement:This is the peer reviewed version of the following article: C. Shen, M. Srebro-Hooper, M. Jean, N. Vanthuyne, L. Toupet, J. A. G. Williams, A. R. Torres, A. J. Riives, G. Muller, J. Autschbach, J. Crassous, Chemistry - A European Journal 2017, 23(2): 407-418, which has been published in final form at https://doi.org/10.1002/chem.201604398. This article may be used for non-commercial purposes in accordance With Wiley-VCH Terms and Conditions for self-archiving.
Date accepted:18 October 2016
Date deposited:12 May 2017
Date of first online publication:01 December 2016
Date first made open access:01 December 2017

Save or Share this output

Export:
Export
Look up in GoogleScholar