Β. Kozankiewicz
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View article: Towards all-optical spin manipulation in single molecules: a refined region for locating a dark resonance
Towards all-optical spin manipulation in single molecules: a refined region for locating a dark resonance Open
The on-demand manipulation of triplet states in closed-shell single molecules is still out of reach due to a lack of information about the energy of those triplet states. Yet, the access to triplet states would open up a route towards an a…
View article: Highly Luminescent Aceno[6]helicenones by Intramolecular Radical Cyclization
Highly Luminescent Aceno[6]helicenones by Intramolecular Radical Cyclization Open
Helicenes and helicenoid structures are promising candidates for future applications exploiting circularly polarized light. Ideal candidates should possess near‐quantitative photoluminescence quantum yield, a high luminescence dissymmetry …
View article: Probing the in‐plane dipole moment vector between ground and excited state of single molecules by the Stark effect
Probing the in‐plane dipole moment vector between ground and excited state of single molecules by the Stark effect Open
Single molecules, embedded inside a well‐defined insertion site of a single‐crystalline host matrix, are sensitive probes of electric field via the induced Stark shift on their lifetime‐limited electronic transition. Though the response of…
View article: Carbonyl mediated fluorescence in aceno[ <i>n</i> ]helicenones and fluoreno[ <i>n</i> ]helicenes
Carbonyl mediated fluorescence in aceno[ <i>n</i> ]helicenones and fluoreno[ <i>n</i> ]helicenes Open
Carbo[ n ]helicenes are poor emitters with the emission peak in purple or blue region. Attaching an aryl-carbonyl group to the helical skeleton shifts the absorption and emission to the visible region and improves the fluorescence quantum …
View article: Photophysical and redox properties of new donor–acceptor–donor (DAD) compounds containing benzothiadiazole (A) and dimethyldihydroacridine (D) units: a combined experimental and theoretical study
Photophysical and redox properties of new donor–acceptor–donor (DAD) compounds containing benzothiadiazole (A) and dimethyldihydroacridine (D) units: a combined experimental and theoretical study Open
Donor–acceptor–donor compounds consisting of 9,9-dimethyl-9,10-dihydroacridine donors differently linked to a benzothiadiazole acceptor exhibited fluorescence in the orange–red spectral range.
View article: High-resolution vibronic spectroscopy of a single molecule embedded in a crystal
High-resolution vibronic spectroscopy of a single molecule embedded in a crystal Open
Vibrational levels of the electronic ground states in dye molecules have not been previously explored at a high resolution in solid matrices. We present new spectroscopic measurements on single polycyclic aromatic molecules of dibenzoterry…
View article: High-resolution vibronic spectroscopy of a single molecule embedded in a crystal
High-resolution vibronic spectroscopy of a single molecule embedded in a crystal Open
Vibrational levels of the electronic ground states in dye molecules have not been previously explored at high resolution in solid matrices. We present new spectroscopic measurements on single polycyclic aromatic molecules of dibenzoterryle…
View article: Reverse Intersystem Crossing of Single Deuterated Perylene Molecules in a Dibenzothiophene Matrix
Reverse Intersystem Crossing of Single Deuterated Perylene Molecules in a Dibenzothiophene Matrix Open
Intersystem crossing to the long‐lived metastable triplet state is often a strong limitation on fluorescence brightness of single molecules, particularly for perylene in various matrices. In this paper, we report on a strong excitation‐ind…
View article: Unravelling the ambiguity of the emission pattern of donor–acceptor salicylaldimines
Unravelling the ambiguity of the emission pattern of donor–acceptor salicylaldimines Open
Four donor–acceptor salicylaldimines with benzoheterocyclic substituents at nitrogen imine were prepared and characterised by means of optical spectroscopy. Their luminescent properties were compared with two isoelectronic carbocyclic anal…
View article: Synthesis and Absorption Properties of Long Acenoacenes
Synthesis and Absorption Properties of Long Acenoacenes Open
Acenes, polyaromatic hydrocarbons composed of linearly fused benzene rings have received immense attention due to their performance as semiconductors in organic optoelectronic applications. Their appealing physicochemical properties, such …
View article: A Large Starphene Comprising Pentacene Branches
A Large Starphene Comprising Pentacene Branches Open
Starphenes are attractive compounds due to their characteristic physicochemical properties that are inherited from acenes, making them interesting compounds for organic electronics and optics. However, the instability and low solubility of…
View article: Potent strategy towards strongly emissive nitroaromatics through a weakly electron-deficient core
Potent strategy towards strongly emissive nitroaromatics through a weakly electron-deficient core Open
Dipyrrolonaphthyridinedione appended with para - or meta -nitrophenyl substituents exhibits strong fluorescence from a 1 ππ* S 1 state.
View article: CCDC 1949980: Experimental Crystal Structure Determination
CCDC 1949980: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 1949981: Experimental Crystal Structure Determination
CCDC 1949981: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 1949982: Experimental Crystal Structure Determination
CCDC 1949982: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Matrix‐induced Linear Stark Effect of Single Dibenzoterrylene Molecules in 2,3‐Dibromonaphthalene Crystal
Matrix‐induced Linear Stark Effect of Single Dibenzoterrylene Molecules in 2,3‐Dibromonaphthalene Crystal Open
Absorption and fluorescence from single molecules can be tuned by applying an external electric field – a phenomenon known as the Stark effect. A linear Stark effect is associated to a lack of centrosymmetry of the guest in the host matrix…
View article: CCDC 1509875: Experimental Crystal Structure Determination
CCDC 1509875: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: New quinacridone derivatives with π-extended conjugation in central core
New quinacridone derivatives with π-extended conjugation in central core Open
A novel synthetic strategy for the preparation of quinacridone derivatives with extended conjugation in central aromatic core is proposed allowing for fine tuning of their electronic properties.
View article: CCDC 1509878: Experimental Crystal Structure Determination
CCDC 1509878: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 1574216: Experimental Crystal Structure Determination
CCDC 1574216: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Unprecedented rearrangement of diketopyrrolopyrroles leads to structurally unique chromophores
Unprecedented rearrangement of diketopyrrolopyrroles leads to structurally unique chromophores Open
Red-emitting thieno[2,3-f]isoindole-5,8-diones were preparedviaunprecedented skeletal rearrangement of diketopyrrolopyrroles in the presence of trimethylsilyl bromide.
View article: Single molecules of terrylene in di-substituted naphthalenes crystallizing in the herringbone pattern
Single molecules of terrylene in di-substituted naphthalenes crystallizing in the herringbone pattern Open
2,3-Dichloronaphthalene and 2,3-dibromonaphthalene were synthesized, their crystal structures determined, and vibronic spectra of single terrylene molecules in the crystals indicated lowering of the guest symmetry.
View article: CCDC 1515700: Experimental Crystal Structure Determination
CCDC 1515700: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 1433015: Experimental Crystal Structure Determination
CCDC 1433015: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Solvatofluorochromic, non-centrosymmetric π-expanded diketopyrrolopyrrole
Solvatofluorochromic, non-centrosymmetric π-expanded diketopyrrolopyrrole Open
A donor–acceptor type π-expanded diketopyrrolopyrrole behaves as non-centrosymmetric as far as linear optical properties are concerned but as ‘pseudo-symmetric’ for two-photon absorption.