scholarly journals Pathways of cylindrical orientations in PS-b-P4VP diblock copolymer thin films upon solvent vapor annealing

Soft Matter ◽  
2014 ◽  
Vol 10 (39) ◽  
pp. 7753-7761 ◽  
Author(s):  
E. Bhoje Gowd ◽  
Tadanori Koga ◽  
Maya K. Endoh ◽  
Kamlesh Kumar ◽  
Manfred Stamm

Pathways that control the orientations of cylindrical microdomains formed in PS-b-P4VP thin films upon annealing in different solvent vapors were clarified using time-resolved in situ GISAXS and ex situ scanning force microscopy.

2013 ◽  
Vol 26 (2) ◽  
pp. 273-281 ◽  
Author(s):  
Xiaodan Gu ◽  
Ilja Gunkel ◽  
Alexander Hexemer ◽  
Weiyin Gu ◽  
Thomas P. Russell

2018 ◽  
Vol 25 (6) ◽  
pp. 1664-1672 ◽  
Author(s):  
M. Berlinghof ◽  
C. Bär ◽  
D. Haas ◽  
F. Bertram ◽  
S. Langner ◽  
...  

Since the properties of functional materials are highly dependent on their specific structure, and since the structural changes, for example during crystallization, induced by coating and annealing processes are significant, the study of structure and its formation is of interest for fundamental and applied science. However, structure analysis is often limited to ex situ determination of final states due to the lack of specialized sample cells that enable real-time investigations. The lack of such cells is mainly due to their fairly complex design and geometrical restrictions defined by the beamline setups. To overcome this obstacle, an advanced sample cell has been designed and constructed; it combines automated doctor blading, solvent vapor annealing and sample hydration with real-time grazing-incidence wide- and small-angle scattering (GIWAXS/GISAXS) and X-ray reflectivity (XRR). The sample cell has limited spatial requirements and is therefore widely usable at beamlines and laboratory-scale instruments. The cell is fully automatized and remains portable, including the necessary electronics. In addition, the cell can be used by interested scientists in cooperation with the Institute for Crystallography and Structural Physics and is expandable with regard to optical secondary probes. Exemplary research studies are presented, in the form of coating of P3HT:PC61PM thin films, solvent vapor annealing of DRCN5T:PC71BM thin films, and hydration of supported phospholipid multilayers, to demonstrate the capabilities of the in situ cell.


2017 ◽  
Vol 66 ◽  
pp. 80-115 ◽  
Author(s):  
Dorthe Posselt ◽  
Jianqi Zhang ◽  
Detlef-M. Smilgies ◽  
Anatoly V. Berezkin ◽  
Igor I. Potemkin ◽  
...  

1998 ◽  
Vol 05 (01) ◽  
pp. 433-436 ◽  
Author(s):  
S. Santucci ◽  
S. Di Nardo ◽  
L. Lozzi ◽  
L. Ottaviano ◽  
M. Passacantando ◽  
...  

Small amounts of purified nickel-phthalocyanine (Ni-PC) have been deposited at room temperature in ultrahigh vacuum onto highly oriented pyrolytic graphite, and studied "in situ" and "ex situ" (in air) with two different atomic force microscopes. The measurements have been taken on samples as prepared either subsequently annealed at 300°C. The growth mode is not uniform; the PC molecules coalesce into small submicrometric crystallites in the critical size range where the transition from the α to the β crystalline phase of phthalocyanines takes place. We show images of both α-like and β-like crystallites. A contact mode AFM image of an α-like crystallite showing intramolecular resolution is also presented.


RSC Advances ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 70-75 ◽  
Author(s):  
Kaori Takano ◽  
Takashi Nyu ◽  
Tatsuhiro Maekawa ◽  
Takashi Seki ◽  
Ryuichi Nakatani ◽  
...  

Real-time and in situ observation technique was proposed for ultra high molecular weight block copolymer thin films under solvent vapor annealing.


Materials ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 438 ◽  
Author(s):  
Haixiao Xu ◽  
Jianqun Jin ◽  
Jing Zhang ◽  
Peng Sheng ◽  
Yu Li ◽  
...  

One-dimensional (1D) nanowires have attracted great interest, while air-stable n-type 1D nanowires still remain scarce. Herein, we present solvent-vapor annealing (SVA) made nanowires based on perylene tetracarboxylic diimide (PDI) derivative. It was found that the spin-coated thin films reorganized into nanowires distributed all over the substrate, as a result of the following solvent-vapor annealing effect. Cooperating with the atomic force microscopy and fluorescence microscopy characterization, the PDI8-CN2 molecules were supposed to conduct a long-range and entire transport to form the 1D nanowires through the SVA process, which may guarantee its potential morphology tailoring ability. In addition, the nanowire-based transistors displayed air stable electron mobility reaching to 0.15 cm2 V−1 s−1, attributing to effective in situ reassembly. Owing to the broader application of organic small-molecule nanowires, this work opens up an attractive approach for exploring new high-performance micro- and nanoelectronics.


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