Sprawozdanie: Międzynarodowa Konferencja Naukowa nt.: Przyszłość badań naukowych w świetle prawa autorskiego, kodeksów etycznych naukowców oraz kryteriów ocen jakości badań, Katowice, 31 stycznia–1 lutego 2020 r.

W dniach 31 stycznia–1 lutego 2020 r. Polsko-Amerykańska Komisja Fulbrighta oraz Wydział Prawa i Administracji Uniwersytetu Śląskiego zorganizowali międzynarodową konferencję naukową pt. Przyszłość badań naukowych w świetle prawa autorskiego, kodeksów etycznych naukowców oraz kryteriów ocen jakości badań. W charakterze prelegentów wystąpili przedstawiciele nauk prawnych, w tym specjalizujący się w prawie własności intelektualnej, reprezentanci nauk ścisłych kierujący zespołami badawczymi we wiodących polskich ośrodkach naukowych, jak również naukowcy prowadzący badania w dziedzinie filozofii i polityki naukowej oraz naukometrii i oceny jakości badań. Uczestnikami konferencji byli naukowcy i doktoranci specjalizujący się w różnych obszarach wiedzy, w tym absolwenci i stypendyści programu Fulbrighta (Fragment tekstu)

Supramolecular organization of liquid-crystal dimers-bis-cyanobiphenyl alkanes on HOPG by scanning tunneling microscopy

2D supramolecular organization of a series of six cyanobiphenyl bimesogens deposited on highly oriented pyrolytic graphite (HOPG) is studied by scanning tunneling microscopy (STM). The adsorbatesare 1,ω-bis(4-cyanobiphenyl-4’-yl)alkanes (CBnCB) with different length of their flexible alkyl spacer (containing 7 to 12 methylene groups). Microscopic investigations at the molecular resolution allow fordetailed analysis of the effect of the alkyl spacer length on the type and the extent of the resulting 2Dorganization. It has been demonstrated that bimesogens with shorter spacers (7 and 8 methylene units)organize in a similar manner characterized by the formation of two types of differently ordered monolayers: dense packed, wherein the molecules are oriented in one direction and ordered into parallel rows(layer structure), or less densely packed wherein they are organized into a chiral windmill-like structure. For derivatives with longer spacers (ranging from 9 to 12 methylene units) additional effect of parity of carbon atoms in the spacer (even versus odd) is observed. In this range of the spacer length even membered bimesogens are still organized in a typical layer structure. However, odd-membered dimers exhibit a much complex 2D supramolecular organization with a larger unit cell and a helical arrangement of the molecules. Careful comparison of this structure with the 3D structural data derived from the X-ray diffraction investigations of single crystals indicates that for these bimesogens a clear correlation exists between the observed complex 2D supramolecular organization in the monolayer and the organization in one of the crystallographic planes of the 3D nematic twist-bent phas

Supramolecular organization of liquid-crystal dimers-bis-cyanobiphenyl alkanes on HOPG by scanning tunneling microscopy

2D supramolecular organization of a series of six cyanobiphenyl bimesogens deposited on highly oriented pyrolytic graphite (HOPG) is studied by scanning tunneling microscopy (STM). The adsorbatesare 1,ω-bis(4-cyanobiphenyl-4’-yl)alkanes (CBnCB) with different length of their flexible alkyl spacer (containing 7 to 12 methylene groups). Microscopic investigations at the molecular resolution allow fordetailed analysis of the effect of the alkyl spacer length on the type and the extent of the resulting 2Dorganization. It has been demonstrated that bimesogens with shorter spacers (7 and 8 methylene units)organize in a similar manner characterized by the formation of two types of differently ordered monolayers: dense packed, wherein the molecules are oriented in one direction and ordered into parallel rows(layer structure), or less densely packed wherein they are organized into a chiral windmill-like structure. For derivatives with longer spacers (ranging from 9 to 12 methylene units) additional effect of parity of carbon atoms in the spacer (even versus odd) is observed. In this range of the spacer length even membered bimesogens are still organized in a typical layer structure. However, odd-membered dimers exhibit a much complex 2D supramolecular organization with a larger unit cell and a helical arrangement of the molecules. Careful comparison of this structure with the 3D structural data derived from the X-ray diffraction investigations of single crystals indicates that for these bimesogens a clear correlation exists between the observed complex 2D supramolecular organization in the monolayer and the organization in one of the crystallographic planes of the 3D nematic twist-bent phas