0000000000323231
AUTHOR
H. Detert
Relationship between structure and electroluminescence of oligo(p-phenylenevinylene)s
The preparation of LEDs with poly(p-phenylenevinylene) (PPV) as emitting material is well established, However, due to the presence of a distribution of conjugated chain lengths in the polymer, systematic investigations of the electroluminescence with polymeric materials are difficult, as far as the optical emission is concerned. We are studying the relationship between structural variation of substituted oligo(p-phenylenevinylene)s and their electroluminescent behaviour using a series of distyrylbenzenes with a variety of substituents in order to investigate their influence on the electroluminescence (EL). Furthermore, we synthesized a homologous series of monodisperse oligo(2,5-dipropoxy-…
Optical studies of thin films of alkoxysubstituted oligo(phenylenevinylenes)
Abstract In this work, we study Langmuir films of a family of materials “in-between” the class of distyrylbenzenes and poly( p -phenylenevinylenes), the oligo(phenylenevinylenes), with varying conjugation lengths—from three-phenyl-ring to nine-phenyl-ring system—and different substitution on the terminal benzene rings. We report our investigations on the film-forming properties as well as their optical characterisations.
Chemical and Spectroscopical Properties of Medium Sizedtrans- andcis-Bicyclo[n.1.0]alk-2-ynes
Chemical and spectroscopical properties of cis- and trans-cyclopropano-anellated cycloalkynes of medium ring size are investigated and compared with results from force field calculations. IR and 13C-NMR data of the alkynes reflect the deformation of the triple bond due to ring strain. Parallel to bending the reactivity increases with decreasing ring size, the trans fused alkynes prove to be nearly as reactive as the cis fused with a two carbon smaller ring size. The bicycloalkynes are complexed with silver triflate. 13C NMR reveals that the triple bond as well as the cyclopropane serve as ligands.
trans- andcis-Bicyclo[n.1.0]alk-2-ynes of Medium Ring Size
Starting from cycloalkenes, the cis- or trans-cyclopropano anellated cycloalkynes 2–7 of medium ring size were synthesized. The triple bonds were introduced in the final reaction step either by the fragmentation of the corresponding 1,2,3-selenadiazoles or by direct dehydration of a ketone (Scheme 2). The cis-fused bicycles 2 and 3 and the trans-fused bicycles 5, 6 and 7 could be isolated in a pure state. The intermediary existence of the most strained system trans-bicyclo[7.1.0]dec-2-yne (4) was proven by trapping reactions.
Quantitative evaluation of the preferential orientation ofpara-phenylene vinylene pentamers in polystyrene films by optically detected magnetic resonance
The morphology of drop-casted and spin-coated films of blends ofpara-phenylene vinylenederived pentamers with polystyrene is investigated by means of X-band optically detected magnetic resonance (ODMR) of the triplet excited states. Adapting an electron spin resonance simulation program to ODMR, the orientation distribution function of the oligomers in the films could be quantified. After drop casting or spin coating the pentamers from a solution, the oligomers tend to lie with their backbones in the plane of the film. The parameters of film preparation and the type of pentamer strongly influence the orientation distribution function. Also, the study of preferentially oriented films allows …
ChemInform Abstract: Chemical and Spectroscopical Properties of Medium Sized trans- and cis- Bicyclo(n.1.0)alk-2-ynes.
Chemical and spectroscopical properties of cis- and trans-cyclopropano-anellated cycloalkynes of medium ring size are investigated and compared with results from force field calculations. IR and 13C-NMR data of the alkynes reflect the deformation of the triple bond due to ring strain. Parallel to bending the reactivity increases with decreasing ring size, the trans fused alkynes prove to be nearly as reactive as the cis fused with a two carbon smaller ring size. The bicycloalkynes are complexed with silver triflate. 13C NMR reveals that the triple bond as well as the cyclopropane serve as ligands.
Green light-emitting devices based on soluble oligo(phenylenevinylenes)
In this work, we report our investigations on the film-forming properties as well as the optical and electroluminescent characterisations of a series of lateral-substituted soluble oligo(phenylenevinylenes) of various conjugation length. Preliminary investigations show that these materials are potential candidates for use in organic light-emitting devices (OLEDs). Two types of OLEDs were fabricated: single layer (SL) and single heterostructure (SHS), with poly(p-phenylenevinylene) (PPV) as hole transporting layer. Our best results were obtained with single layer device emitting green light with a luminance of 0.18 cd m(-2) and 0.24 cd m(-2) at a driving voltage of 10 V. (c) 2004 Elsevier B.…
ChemInform Abstract: trans- and cis-Bicyclo(n.1.0)alk-2-ynes of Medium Ring Size.
Starting from cycloalkenes, the cis- or trans-cyclopropano anellated cycloalkynes 2–7 of medium ring size were synthesized. The triple bonds were introduced in the final reaction step either by the fragmentation of the corresponding 1,2,3-selenadiazoles or by direct dehydration of a ketone (Scheme 2). The cis-fused bicycles 2 and 3 and the trans-fused bicycles 5, 6 and 7 could be isolated in a pure state. The intermediary existence of the most strained system trans-bicyclo[7.1.0]dec-2-yne (4) was proven by trapping reactions.
CCDC 177377: Experimental Crystal Structure Determination
Related Article: H.Detert, D.Lenoir, H.Zipse|2009|Eur.J.Org.Chem.|2009|1181|doi:10.1002/ejoc.200801076
CCDC 684678: Experimental Crystal Structure Determination
Related Article: H.Detert, D.Lenoir, H.Zipse|2009|Eur.J.Org.Chem.|2009|1181|doi:10.1002/ejoc.200801076
CCDC 1821993: Experimental Crystal Structure Determination
Related Article: D. Limbach, H. Detert, D. Schollmeyer|2018|IUCrData|3|x180212|doi:10.1107/S2414314618002122
CCDC 2018468: Experimental Crystal Structure Determination
Related Article: H. Detert, L. Kluge, D. Schollmeyer|2020|IUCrData|5|x201018|doi:10.1107/S2414314620010184
CCDC 149204: Experimental Crystal Structure Determination
Related Article: H.Detert, D.Schollmeyer, E.Sugiono|2001|Eur.J.Org.Chem.|2001|2927|doi:10.1002/1099-0690(200108)2001:153.0.CO;2-V
CCDC 1876786: Experimental Crystal Structure Determination
Related Article: H. Detert, D. Schollmeyer|2018|IUCrData|3|x181550|doi:10.1107/S241431461801550X
CCDC 2057509: Experimental Crystal Structure Determination
Related Article: H. Detert, D. Schollmeyer|2021|IUCrData|6|x210069|doi:10.1107/S2414314621000699
CCDC 1989990: Experimental Crystal Structure Determination
Related Article: H. Detert, M. Jochem, D. Schollmeyer|2020|IUCrData|5||doi:10.1107/S2414314620003727
CCDC 1515447: Experimental Crystal Structure Determination
Related Article: D. Limbach, H. Detert, D. Schollmeyer|2016|IUCrData|1|x161782|doi:10.1107/S241431461601782X
CCDC 891469: Experimental Crystal Structure Determination
Related Article: J.Letessier,M.Geffe,D.Schollmeyer,H.Detert|2013|Synthesis|45|3173|doi:10.1055/s-0033-1338530
CCDC 1879746: Experimental Crystal Structure Determination
Related Article: H. Detert, P. Bachon, D. Schollmeyer|2018|IUCrData|3|x181640|doi:10.1107/S2414314618016401
CCDC 805337: Experimental Crystal Structure Determination
Related Article: B.Dassonneville, B.Witulski, H.Detert|2011|Eur.J.Org.Chem.|2011|2836|doi:10.1002/ejoc.201100121
CCDC 1949606: Experimental Crystal Structure Determination
Related Article: H. Detert, D. Schollmeyer|2019|IUCrData|4|x191179|doi:10.1107/S2414314619011799
CCDC 2033919: Experimental Crystal Structure Determination
Related Article: D. Schollmeyer, M. Heidrich, H. Detert|2020|IUCrData|5||doi:10.1107/S2414314620013024
CCDC 805338: Experimental Crystal Structure Determination
Related Article: F.Nissen, H.Detert|2011|Eur.J.Org.Chem.|2011|2845|doi:10.1002/ejoc.201100131
CCDC 2080018: Experimental Crystal Structure Determination
Related Article: V. Schmitt, G. Holzmann, D. Schollmeyer, H. Detert|2021|IUCrData|6|x210443|doi:10.1107/S2414314621004430
CCDC 684679: Experimental Crystal Structure Determination
Related Article: H.Detert, D.Lenoir, H.Zipse|2009|Eur.J.Org.Chem.|2009|1181|doi:10.1002/ejoc.200801076
CCDC 149205: Experimental Crystal Structure Determination
Related Article: H.Detert, D.Schollmeyer, E.Sugiono|2001|Eur.J.Org.Chem.|2001|2927|doi:10.1002/1099-0690(200108)2001:153.0.CO;2-V
CCDC 1570830: Experimental Crystal Structure Determination
Related Article: H. Detert, D. Schollmeyer|2017|IUCrData|2|x171236|doi:10.1107/S2414314617012366
CCDC 2091488: Experimental Crystal Structure Determination
Related Article: D. Schollmeyer, O. Sadovski, H. Detert|2021|IUCrData|6|x210654|doi:10.1107/S2414314621006544
CCDC 1521457: Experimental Crystal Structure Determination
Related Article: H. Detert, D. Schollmeyer|2016|IUCrData|1|x161963|doi:10.1107/S2414314616019635
CCDC 2021398: Experimental Crystal Structure Determination
Related Article: H. Detert, D. Schollmeyer|2020|IUCrData|5|x201081|doi:10.1107/S2414314620010810
CCDC 1988066: Experimental Crystal Structure Determination
Related Article: H. Detert, N. Jacobs, D. Schollmeyer|2020|IUCrData|5|x200307|doi:10.1107/S2414314620003077
CCDC 2048056: Experimental Crystal Structure Determination
Related Article: H. Detert, D. Schollmeyer|2020|IUCrData|5|x201585|doi:10.1107/S2414314620015850
CCDC 1576752: Experimental Crystal Structure Determination
Related Article: D. Limbach, H. Detert, D. Schollmeyer|2017|IUCrData|2|x171394|doi:10.1107/S2414314617013943
CCDC 1897363: Experimental Crystal Structure Determination
Related Article: H. Detert, D. Schollmeyer|2019|IUCrData|4|x190236|doi:10.1107/S2414314619002360
CCDC 1581763: Experimental Crystal Structure Determination
Related Article: H. Detert, D. Schollmeyer|2017|IUCrData|2|x171550|doi:10.1107/S2414314617015504
CCDC 251049: Experimental Crystal Structure Determination
Related Article: R.Herges, A.Papafilippopoulos, K.Hess, C.Chiappe, D.Lenoir, H.Detert|2005|Angew.Chem.,Int.Ed.|44|1412|doi:10.1002/anie.200461632