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  1. Book ; Online: Housing Careers, Intergenerational Support and Family Relations

    Lennartz , Christian / Ronald, Richard

    2019  

    Keywords Society & culture: general ; Housing careers ; homeownership ; intergenerational relations ; private transfers ; wealth inequality ; families ; society ; economy
    Size 1 electronic resource (196 pages)
    Publisher Taylor and Francis
    Document type Book ; Online
    Note English ; Open Access
    HBZ-ID HT021028764
    Database ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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  2. Book ; Online: Chapter 9 The housing careers of younger adults and intergenerational support in Germany's 'society of renters'

    Lennartz, Christian / Helbrecht, Ilse

    2019  

    Abstract: Through narrative interviews with younger adults and their parents ,this paper explores how the housing transitions of younger adults,both within the rental sector and into homeownership, are shapedthrough intergenerational intra-family support in ... ...

    Abstract Through narrative interviews with younger adults and their parents ,this paper explores how the housing transitions of younger adults,both within the rental sector and into homeownership, are shapedthrough intergenerational intra-family support in Germany'ssociety of renters. Our fi ndings highlight the profound qualitativediff erences between regular transfers for establishing and retainingresidential independence in the rental sector and inter vivos gifts forhouse purchase. Where the former support type is given and takenunconditionally, transfers for house purchase follow a diff erentlogic and carry diff erent meanings. Being a necessary condition forproperty acquisition at young age, they have the power to completelyrebalance family relations and undermine younger adults' autonomyaccordingly. In an aggregate perspective, our study further suggestsincreasing socio-spatial inequalities within the younger generationwhich run along both class and spatial origin, sharply dividing thehousing market opportunities of 'original Berliners' and those whohave moved to the city from more affl uent regions in Germany
    Keywords Social sciences (General)
    Size 1 electronic resource (21 p.)
    Publisher Routledge
    Publishing place Verlagsort nicht ermittelbar
    Document type Book ; Online
    Note English ; Open Access
    HBZ-ID HT020195444
    ISBN 9780367262822 ; 0367262827
    Database ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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  3. Book ; Online: Chapter 1 Housing careers, intergenerational support and family relations

    Lennartz, Christian / Ronald , Richard

    2019  

    Abstract: The home and family have always been mutually embedded, withthe former central to the realization and reproduction of the latter.More recently, this mutuality has taken on a more critical salience asrealignments in housing markets, employment and welfare ...

    Abstract The home and family have always been mutually embedded, withthe former central to the realization and reproduction of the latter.More recently, this mutuality has taken on a more critical salience asrealignments in housing markets, employment and welfare states inmany countries have worked together to undermine housing accessfor new households. In this context, families have become increasinglyinvolved in smoothening the routes of young adults members upthe 'housing ladder' into home ownership. Intergenerational supportappears to have become much more widespread and not just confi nedto familialistic welfare regimes. The role of intergenerational supportfor housing remains, however, highly diff erentiated across countries,cities and regions, as well as uneven between social and incomeclasses. This introduction to the Special Issue explores how the roleof housing wealth transfers has impacted the renegotiation of thegenerational contract. In doing so, it sets the scene for the articlesthat follow, each of which contribute signifi cantly to advancingunderstanding of housing as a key driver of contemporary socialrelations and inequalities
    Keywords Social sciences (General)
    Size 1 electronic resource (14 p.)
    Publisher Routledge
    Publishing place Verlagsort nicht ermittelbar
    Document type Book ; Online
    Note English ; Open Access
    HBZ-ID HT020195447
    ISBN 9780367262822 ; 0367262827
    Database ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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  4. Article ; Online: A theoretical study on the mechanistic highlights behind the Brønsted-acid dependent mer-fac isomerization of homoleptic carbenic iridium complexes for PhOLEDs.

    Setzer, Tobias / Lennartz, Christian / Dreuw, Andreas

    Dalton transactions (Cambridge, England : 2003)

    2017  Volume 46, Issue 22, Page(s) 7194–7209

    Abstract: Recently, a successful Brønsted-acid mediated geometric isomerization of the meridional homoleptic carbenic iridium(iii) complexes tris-(N-phenyl,N-methyl-benzimidazol-2-yl)iridium(iii) (1) and tris-(N-phenyl,N-benzyl-benzimidazol-2-yl)iridium(iii) (2) ... ...

    Abstract Recently, a successful Brønsted-acid mediated geometric isomerization of the meridional homoleptic carbenic iridium(iii) complexes tris-(N-phenyl,N-methyl-benzimidazol-2-yl)iridium(iii) (1) and tris-(N-phenyl,N-benzyl-benzimidazol-2-yl)iridium(iii) (2) into their facial form has been reported. In the present work the pronounced acid-dependency of this particular isomerization procedure is revisited and additional mechanistic pathways are taken into account. Moreover, the acid-induced material decomposition is addressed. All calculations are carried out using density functional theory (DFT) while the environmental effects in solution are accounted for by the COSMO-RS model. The simulated results clearly reveal the outstanding importance of the complex interplay between acid strength, coordinating power of the corresponding base and the steric influence of the ligand system in contrast to the plain calculation of minimum energy pathways for selected complexes. Eventually, general rules to enhance the material-specific reaction yields are provided.
    Language English
    Publishing date 2017-06-06
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472887-4
    ISSN 1477-9234 ; 1364-5447 ; 0300-9246 ; 1477-9226
    ISSN (online) 1477-9234 ; 1364-5447
    ISSN 0300-9246 ; 1477-9226
    DOI 10.1039/c7dt01201b
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Book ; Online: Toekomstbestendig kiezen, rechtvaardig verdelen

    Reudink, Melchert / Bastiaanssen, Jeroen / Elzenga, Hans / Franken, Ron / van Grinsven, Hans / Hanemaaijer, Aldert / Lennartz, Christian / van Schie, Maarten / Schild, Johanna / Schotten, Kees / van der Veen, Roel / Vonk, Marijke / Sanders, Marlies

    Balans van de leefomgeving 2023

    2023  

    Abstract: In deze Balans van de Leefomgeving wordt de staat en de voortgang van het leefomgevings- beleid beschreven met betrekking tot vier thema’s: klimaatverandering en energie, circulaire economie, natuur, landbouw en voedsel, en stad en regio. Die ‘staat en ... ...

    Abstract In deze Balans van de Leefomgeving wordt de staat en de voortgang van het leefomgevings- beleid beschreven met betrekking tot vier thema’s: klimaatverandering en energie, circulaire economie, natuur, landbouw en voedsel, en stad en regio. Die ‘staat en voortgang’ laten zien dat de doelen maar beperkt dichterbij komen en dat er problemen zijn met de uitvoering van het beleid. Het gangbare beleid dat jarenlang gebaseerd is geweest op een sectorale benadering en waarbij oplossingen veelal werden gezocht binnen de bestaande kaders, loopt tegen zijn grenzen aan – met grote gevolgen voor het vertrouwen van burgers en bedrijfsleven in de overheid. --Fundamentele veranderingen in het leefomgevingsbeleid zijn nodig om de transformatie naar een duurzame samenleving te maken. Dat vraagt van bestuur en beleid het vermogen om maatschappelijke innovatie en creatieve oplossingen tot stand te brengen en niet-toe- komstbestendige praktijken af te bouwen. Daarnaast vraagt het om beleid dat richting geeft, dat in staat is om in te spelen op veranderende omstandigheden en dat als legitiem wordt ervaren (Nabielek et al. 2023). Een heldere en breed gedragen visie draagt bij aan het geven van richting door ontwikkelingen tijdig te verkennen en afwegingen expliciet te maken. Ook draagt een visie bij aan het inhoudelijk onderbouwen van de keuzes voor doelen en maatregelen en het, indien nodig, aanpassen van deze keuzes en maatregelen. Een bewuste en expliciete omgang met zowel distributieve als procedurele rechtvaardigheid ten slotte, draagt bij aan de legitimiteit van het beleid die nodig is om de samenleving mee te nemen in de fundamentele en soms ook pijnlijke keuzes die bijdragen aan een toekomst- bestendig Nederland. --De vier afzonderlijke leefomgevingsthema’s kennen naast deze ‘het gehele leefomgevings- beleid overziende’ conclusies ook hun eigen karakteristieken, met per thema aanvullende eigen aandachtspunten. Daar gaan we in de volgende paragrafen kort op in; uitgebreider komen ze aan bod in de verdieping.
    Keywords Life Science
    Language Dutch
    Publisher PBL Planbureau voor de Leefomgeving
    Publishing country nl
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: Unicolored phosphor-sensitized fluorescence for efficient and stable blue OLEDs.

    Heimel, Paul / Mondal, Anirban / May, Falk / Kowalsky, Wolfgang / Lennartz, Christian / Andrienko, Denis / Lovrincic, Robert

    Nature communications

    2018  Volume 9, Issue 1, Page(s) 4990

    Abstract: Improving lifetimes and efficiencies of blue organic light-emitting diodes is clearly a scientific challenge. Towards solving this challenge, we propose a unicolored phosphor-sensitized fluorescence approach, with phosphorescent and fluorescent emitters ... ...

    Abstract Improving lifetimes and efficiencies of blue organic light-emitting diodes is clearly a scientific challenge. Towards solving this challenge, we propose a unicolored phosphor-sensitized fluorescence approach, with phosphorescent and fluorescent emitters tailored to preserve the initial color of phosphorescence. Using this approach, we design an efficient sky-blue light-emitting diode with radiative decay times in the submicrosecond regime. By changing the concentration of fluorescent emitter, we show that the lifetime is proportional to the reduction of the radiative decay time and tune the operational stability to lifetimes of up to 320 h (80% decay, initial luminance of 1000 cd/m
    Language English
    Publishing date 2018-11-26
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-018-07432-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Meltdown! Local Heating by Decaying Excited Host Positive Polarons Triggers Aggregation Quenching in Blue PhOLEDs.

    Setzer, Tobias / Friederich, Pascal / Meded, Velimir / Wenzel, Wolfgang / Lennartz, Christian / Dreuw, Andreas

    Chemphyschem : a European journal of chemical physics and physical chemistry

    2018  Volume 19, Issue 21, Page(s) 2961–2966

    Abstract: Exciton-polaron induced aggregation (EPIA) in organic host materials for blue Phosphorescent Organic Light Emitting Diodes (PhOLEDs) is driven by a non-radiative decay of electronically excited positive polarons resulting in a local heating of the ... ...

    Abstract Exciton-polaron induced aggregation (EPIA) in organic host materials for blue Phosphorescent Organic Light Emitting Diodes (PhOLEDs) is driven by a non-radiative decay of electronically excited positive polarons resulting in a local heating of the amourphous host matrix. The released heat triggers morphological changes, i. e. molecular aggregation between neighboring host molecules. The resulting aggregates, which our calculations identify as carbazolyl dimers, lead to decreased PhOLED efficiency. Statistical assessment of some host-only morphologies reveals a structure-dependent propensity for molecular aggregation corroborating the identified EPIA mechanism. Our findings provide a fresh look at established molecular design rules and will help to improve blue PhOLED host materials to enhance blue PhOLED device lifetimes.
    Language English
    Publishing date 2018-09-04
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1439-7641
    ISSN (online) 1439-7641
    DOI 10.1002/cphc.201800250
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Modeling disordered morphologies in organic semiconductors.

    Neumann, Tobias / Danilov, Denis / Lennartz, Christian / Wenzel, Wolfgang

    Journal of computational chemistry

    2013  Volume 34, Issue 31, Page(s) 2716–2725

    Abstract: Organic thin film devices are investigated for many diverse applications, including light emitting diodes, organic photovoltaic and organic field effect transistors. Modeling of their properties on the basis of their detailed molecular structure requires ...

    Abstract Organic thin film devices are investigated for many diverse applications, including light emitting diodes, organic photovoltaic and organic field effect transistors. Modeling of their properties on the basis of their detailed molecular structure requires generation of representative morphologies, many of which are amorphous. Because time-scales for the formation of the molecular structure are slow, we have developed a linear-scaling single molecule deposition protocol which generates morphologies by simulation of vapor deposition of molecular films. We have applied this protocol to systems comprising argon, buckminsterfullerene, N,N-Di(naphthalene-1-yl)-N,N'-diphenyl-benzidine, mer-tris(8-hydroxy-quinoline)aluminum(III), and phenyl-C61-butyric acid methyl ester, with and without postdeposition relaxation of the individually deposited molecules. The proposed single molecule deposition protocol leads to formation of highly ordered morphologies in argon and buckminsterfullerene systems when postdeposition relaxation is used to locally anneal the configuration in the vicinity of the newly deposited molecule. The other systems formed disordered amorphous morphologies and the postdeposition local relaxation step has only a small effect on the characteristics of the disordered morphology in comparison to the materials forming crystals.
    Language English
    Publishing date 2013-12-05
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1479181-x
    ISSN 1096-987X ; 0192-8651
    ISSN (online) 1096-987X
    ISSN 0192-8651
    DOI 10.1002/jcc.23445
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Twist it! The acid-dependent isomerization of homoleptic carbenic iridium(iii) complexes

    Osiak, Jaroslaw G. / Setzer, Tobias / Jones, Peter G. / Lennartz, Christian / Dreuw, Andreas / Kowalsky, Wolfgang / Johannes, Hans-Hermann

    Chemical communications. 2017 Mar. 16, v. 53, no. 23 p.3295-3298

    2017  

    Abstract: The first successful meridional to facial isomerization of homoleptic carbenic iridium(iii) complexes is presented. The Brønsted-acid-mediated procedure allows the conversion of large amounts of material and additionally provides an in situ purification ... ...

    Abstract The first successful meridional to facial isomerization of homoleptic carbenic iridium(iii) complexes is presented. The Brønsted-acid-mediated procedure allows the conversion of large amounts of material and additionally provides an in situ purification because of precipitation of the target material during the reaction. The pronounced acid-dependency of the reaction yield observed for tris(N-phenyl,N-methyl-benzimidazol-2-yl)iridium(iii) and tris(N-phenyl,N-benzyl-benzimidazol-2-yl)iridium(iii) was investigated by labelling experiments and quantum chemical calculations. The results reveal a subtle balance between the strength of the acid, the coordinating power of the corresponding base and steric effects of the ligand sphere. Based on these findings, general rules are given for a systematic and material-specific modification of the reaction conditions for the mer-fac isomerization of homoleptic carbenic Ir(iii) complexes.
    Keywords iridium ; isomerization ; ligands ; quantum mechanics
    Language English
    Dates of publication 2017-0316
    Size p. 3295-3298.
    Publishing place The Royal Society of Chemistry
    Document type Article ; Online
    ZDB-ID 1472881-3
    ISSN 1364-548X ; 1359-7345 ; 0009-241X
    ISSN (online) 1364-548X
    ISSN 1359-7345 ; 0009-241X
    DOI 10.1039/c7cc00697g
    Database NAL-Catalogue (AGRICOLA)

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  10. Article ; Online: Atomistic simulation on charge mobility of amorphous tris(8-hydroxyquinoline) aluminum (Alq3): origin of Poole-Frenkel-type behavior.

    Nagata, Yuki / Lennartz, Christian

    The Journal of chemical physics

    2008  Volume 129, Issue 3, Page(s) 34709

    Abstract: The atomistic simulation of charge transfer process for an amorphous Alq(3) system is reported. By employing electrostatic potential charges, we calculate site energies and find that the standard deviation of site energy distribution is about twice as ... ...

    Abstract The atomistic simulation of charge transfer process for an amorphous Alq(3) system is reported. By employing electrostatic potential charges, we calculate site energies and find that the standard deviation of site energy distribution is about twice as large as predicted in previous research. The charge mobility is calculated via the Miller-Abrahams formalism and the master equation approach. We find that the wide site energy distribution governs Poole-Frenkel-type behavior of charge mobility against electric field, while the spatially correlated site energy is not a dominant mechanism of Poole-Frenkel behavior in the range from 2x10(5) to 1.4x10(6) V/cm. Also we reveal that randomly meshed connectivities are, in principle, required to account for the Poole-Frenkel mechanism. Charge carriers find a zigzag pathway at low electric field, while they find a straight pathway along electric field when a high electric field is applied. In the space-charge-limited current scheme, the charge-carrier density increases with electric field strength so that the nonlinear behavior of charge mobility is enhanced through the strong charge-carrier density dependence of charge mobility.
    Language English
    Publishing date 2008-07-21
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3113-6
    ISSN 1089-7690 ; 0021-9606
    ISSN (online) 1089-7690
    ISSN 0021-9606
    DOI 10.1063/1.2949506
    Database MEDical Literature Analysis and Retrieval System OnLINE

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