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Papers by Karolis Norvaiša

Research paper thumbnail of CCDC 2118023: Experimental Crystal Structure Determination

Research paper thumbnail of CCDC 2118021: Experimental Crystal Structure Determination

Research paper thumbnail of CCDC 2118020: Experimental Crystal Structure Determination

Research paper thumbnail of CCDC 2118018: Experimental Crystal Structure Determination

Research paper thumbnail of Core Modulation of Porphyrins for Chemical Sensing

The 1st International Electronic Conference on Chemical Sensors and Analytical Chemistry, 2021

This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY

Research paper thumbnail of CCDC 1935665: Experimental Crystal Structure Determination

Research paper thumbnail of CCDC 1935663: Experimental Crystal Structure Determination

Research paper thumbnail of CCDC 1935662: Experimental Crystal Structure Determination

Research paper thumbnail of CCDC 1935661: Experimental Crystal Structure Determination

Research paper thumbnail of CCDC 1532230: Experimental Crystal Structure Determination

An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more 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 from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Research paper thumbnail of CCDC 1532229: Experimental Crystal Structure Determination

An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more 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 from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Research paper thumbnail of CCDC 1532227: Experimental Crystal Structure Determination

An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more 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 from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Research paper thumbnail of CCDC 1532226: Experimental Crystal Structure Determination

An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more 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 from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Research paper thumbnail of CCDC 1499411: Experimental Crystal Structure Determination

An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more 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 from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Research paper thumbnail of CCDC 1499410: Experimental Crystal Structure Determination

An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more 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 from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Research paper thumbnail of CCDC 2012197: Experimental Crystal Structure Determination

Research paper thumbnail of CCDC 2012196: Experimental Crystal Structure Determination

Research paper thumbnail of CCDC 2012199: Experimental Crystal Structure Determination

Research paper thumbnail of CCDC 2012198: Experimental Crystal Structure Determination

Research paper thumbnail of Steric Repulsion Induced Conformational Switch in Supramolecular Structures

Chemistry – A European Journal, 2021

Inspired by the rigidified architecture of 'picket-fence' systems, we propose a strategy ... more Inspired by the rigidified architecture of 'picket-fence' systems, we propose a strategy utilizing strain in already peripherally overcrowded structures to impose intramolecular tension for selective atropisomeric conversion. Employing this approach, tunable shape-persistent porphyrin conformations were acquired exhibiting distinctive supramolecular nanostructures based on the orientation of the peripheral groups. The developed molecular strain engineering methodologies have allowed the introduction of the pivalic units creating a highly strained molecular skeleton. Changes in absorption spectrum indicated the presence of severe steric repulsions which were confirmed by single crystal X-ray analysis. To release the steric strain introduced by the peripheral units, thermal equilibration strategies were used to selectively convert the most abundant atropisomer to the desirable minor one.

Research paper thumbnail of CCDC 2118023: Experimental Crystal Structure Determination

Research paper thumbnail of CCDC 2118021: Experimental Crystal Structure Determination

Research paper thumbnail of CCDC 2118020: Experimental Crystal Structure Determination

Research paper thumbnail of CCDC 2118018: Experimental Crystal Structure Determination

Research paper thumbnail of Core Modulation of Porphyrins for Chemical Sensing

The 1st International Electronic Conference on Chemical Sensors and Analytical Chemistry, 2021

This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY

Research paper thumbnail of CCDC 1935665: Experimental Crystal Structure Determination

Research paper thumbnail of CCDC 1935663: Experimental Crystal Structure Determination

Research paper thumbnail of CCDC 1935662: Experimental Crystal Structure Determination

Research paper thumbnail of CCDC 1935661: Experimental Crystal Structure Determination

Research paper thumbnail of CCDC 1532230: Experimental Crystal Structure Determination

An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more 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 from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Research paper thumbnail of CCDC 1532229: Experimental Crystal Structure Determination

An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more 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 from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Research paper thumbnail of CCDC 1532227: Experimental Crystal Structure Determination

An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more 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 from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Research paper thumbnail of CCDC 1532226: Experimental Crystal Structure Determination

An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more 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 from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Research paper thumbnail of CCDC 1499411: Experimental Crystal Structure Determination

An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more 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 from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Research paper thumbnail of CCDC 1499410: Experimental Crystal Structure Determination

An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more 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 from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Research paper thumbnail of CCDC 2012197: Experimental Crystal Structure Determination

Research paper thumbnail of CCDC 2012196: Experimental Crystal Structure Determination

Research paper thumbnail of CCDC 2012199: Experimental Crystal Structure Determination

Research paper thumbnail of CCDC 2012198: Experimental Crystal Structure Determination

Research paper thumbnail of Steric Repulsion Induced Conformational Switch in Supramolecular Structures

Chemistry – A European Journal, 2021

Inspired by the rigidified architecture of 'picket-fence' systems, we propose a strategy ... more Inspired by the rigidified architecture of 'picket-fence' systems, we propose a strategy utilizing strain in already peripherally overcrowded structures to impose intramolecular tension for selective atropisomeric conversion. Employing this approach, tunable shape-persistent porphyrin conformations were acquired exhibiting distinctive supramolecular nanostructures based on the orientation of the peripheral groups. The developed molecular strain engineering methodologies have allowed the introduction of the pivalic units creating a highly strained molecular skeleton. Changes in absorption spectrum indicated the presence of severe steric repulsions which were confirmed by single crystal X-ray analysis. To release the steric strain introduced by the peripheral units, thermal equilibration strategies were used to selectively convert the most abundant atropisomer to the desirable minor one.