geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

On-Surface Synthesis of Two-Dimensional Covalent Organic Structures versus Halogen-Bonded Self-Assembly: Competing Formation of Organic Nanoarchitectures


, : On-Surface Synthesis of Two-Dimensional Covalent Organic Structures versus Halogen-Bonded Self-Assembly: Competing Formation of Organic Nanoarchitectures. Acs Nano 10(5): 5490-5498

The competition between the on-surface synthesis of covalent nanoarchitectures and the self-assembly of star-shaped 1,3,5-Tris(4-iodophenyl)benzene molecules on Au(111) in vacuum is investigated using scanning tunneling microscopy above room temperature. The molecules form covalent polygonal nanoachitectures at the gold surface step edges and at the elbows of the gold reconstruction at low coverage. With coverage increasing two-dimensional halogen-bonded structures appear and grow on the surface terraces. Two different halogen-bonded nanoarchitectures are coexisting on the surface and hybrid covalent-halogen bonded structures are locally observed. At high coverage covalent nanoarchitectures are squeezed at the domain boundary of the halogen-bonded structures. The competitive growth between the covalent and halogen-bonded nanoarchitectures leads to formation of a two-layer film above one monolayer deposition. For this coverage, the covalent nanoarchitectures are propelled on top of the halogen-bonded first layer. These observations open up new opportunities for decoupling covalent nanoarchitectures from catalytically active and metal surfaces in vacuum.

US$19.90

PMID: 27158901

DOI: 10.1021/acsnano.6b01938


Other references

Hoang, B.; Reilly, R.M.; Allen, C., 2012: Block copolymer micelles target Auger electron radiotherapy to the nucleus of HER2-positive breast cancer cells. Intracellular trafficking of Auger electron emitting radionuclides to perinuclear and nuclear regions of cells is critical to realizing their full therapeutic potential. In the present study, block copolymer micelles (BCMs) were labeled with the A...

Verdcourt B., 1971: Studies in the leguminosae d papilionoideae d for the flora of tropical east africa part 5. Kew Bulletin 25(1): 65-169

Obermann, E.C.; Meyer, S.; Hellge, D.; Zaak, D.; Filbeck, T.; Stoehr, R.; Hofstaedter, F.; Hartmann, A.; Knuechel, R., 2004: Fluorescence in situ hybridization detects frequent chromosome 9 deletions and aneuploidy in histologically normal urothelium of bladder cancer patients. Investigation of early urothelial lesions is essential to gain insight into the development of bladder cancer. In order to evaluate if deletions of chromosome arms 9p and 9q are preceding histomorphological changes in the urothelium, histologicall...

Pesohle, C.; Rengo, F.; Sacca, L.; Ferrau, O.; Trimarchi, F.; Carducci, A.; Condorelli, M., 1970: Physiopathology of insulin production. 5. Behaviour of IRI in normal subjects and those with pancreatic diabetes after a glucose load by vein. Blood glucose and plasma immunoreactive insulin were estimated after a glucose load by vein in 16 normal subjects, 8 with latent and 8 with frank diabetes. Blood glucose rose sharply in the first 5 min in all groups, declining most rapidly in the...

Pijnacker L.P.; Ferwerda M.A., 1984: Giemsa c banding of potato chromosomes. An air-drying technique was developed that provided well-spread somatic metaphases of the potato Solanum tuberosum. With Giemsa C-banding, the individual chromosomes (x = 12) could be identified. Some bands are different from those in S. phureja....

Bearson, B.L.; Bearson, S.M.D.; Lee, I.Soo.; Brunelle, B.W., 2010: The Salmonella enterica serovar Typhimurium QseB response regulator negatively regulates bacterial motility and swine colonization in the absence of the QseC sensor kinase. Salmonella enterica serovar Typhimurium (S. Typhimurium) responds to the catecholamine, norepinephrine by increasing bacterial growth and enhancing motility. In this study, iron with or without the siderophore, ferrioxamine E also enhanced bacteri...

Eklind, K.; Gustafsson, R.; Tiden, A.K.; Norberg, T.; Aberg, P.M., 1996: Large-scale synthesis of a Lewis B tetrasaccharide derivative, its acrylamide copolymer, and related DI- and trisaccharides for use in adhesion inhibition studies with Helicobacter pylori. The 2-aminoethyl glycoside of O-alpha-L-fucopyranosyl-(1 fwdarw 2)-O-beta-D-galactopyranosyl-(1 fwdarw 3)-(O-alpha-L-fucopyranosyl-(1 fwdarw 4))-2-acetamido-2-deoxy-beta-D-glucopyranose (Lewis B tetrasaccharide) was synthesized on a large scale an...

Murphy, W., 2006: Forest recreation in a commercial environment. Recreation is an increasingly important function of the forest, delivering a broad range of benefits to society and supporting rural tourism and economic development. Forest owners, both large and small, are critical to delivering these functions....

Gumpesberger, G.; Tappeiner, J., 1958: Results of penicillin treatment in latent and tertiary syphilis. Zeitschrift für Haut- und Geschlechtskrankheiten 24(1): 18-23

Besedina I.V.; Bessonova N.I.; Karchevskaya V.V.; Borisova L.A.; Mironova A.A., 1982: The stability of eye drops prepared with the aid of sterilizing filtration. Vladipor membrane microfilters were used for sterilization of eye drops, containing 0.02% riboflavin, 1% mesaton and 1% silver nitrate, to attain the maximal purity of the solutions. The expiration dates of the solutions were established for stora...