Title |
Cellular interfaces with hydrogen-bonded organic semiconductor hierarchical nanocrystals
|
---|---|
Published in |
Nature Communications, July 2017
|
DOI | 10.1038/s41467-017-00135-0 |
Pubmed ID | |
Authors |
Mykhailo Sytnyk, Marie Jakešová, Monika Litviňuková, Oleksandr Mashkov, Dominik Kriegner, Julian Stangl, Jana Nebesářová, Frank W. Fecher, Wolfgang Schöfberger, Niyazi Serdar Sariciftci, Rainer Schindl, Wolfgang Heiss, Eric Daniel Głowacki |
Abstract |
Successful formation of electronic interfaces between living cells and semiconductors hinges on being able to obtain an extremely close and high surface-area contact, which preserves both cell viability and semiconductor performance. To accomplish this, we introduce organic semiconductor assemblies consisting of a hierarchical arrangement of nanocrystals. These are synthesised via a colloidal chemical route that transforms the nontoxic commercial pigment quinacridone into various biomimetic three-dimensional arrangements of nanocrystals. Through a tuning of parameters such as precursor concentration, ligands and additives, we obtain complex size and shape control at room temperature. We elaborate hedgehog-shaped crystals comprising nanoscale needles or daggers that form intimate interfaces with the cell membrane, minimising the cleft with single cells without apparent detriment to viability. Excitation of such interfaces with light leads to effective cellular photostimulation. We find reversible light-induced conductance changes in ion-selective or temperature-gated channels.Nanomaterials that form a bioelectronic interface with cells are fascinating tools for controlling cellular behavior. Here, the authors photostimulate single cells with spiky assemblies of semiconducting quinacridone nanocrystals, whose nanoscale needles maximize electronic contact with the cells. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
Sweden | 1 | 13% |
Czechia | 1 | 13% |
China | 1 | 13% |
Unknown | 5 | 63% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 4 | 50% |
Scientists | 2 | 25% |
Practitioners (doctors, other healthcare professionals) | 1 | 13% |
Science communicators (journalists, bloggers, editors) | 1 | 13% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 85 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 19 | 22% |
Researcher | 12 | 14% |
Student > Master | 12 | 14% |
Student > Postgraduate | 6 | 7% |
Student > Bachelor | 5 | 6% |
Other | 11 | 13% |
Unknown | 20 | 24% |
Readers by discipline | Count | As % |
---|---|---|
Chemistry | 17 | 20% |
Engineering | 13 | 15% |
Materials Science | 12 | 14% |
Physics and Astronomy | 6 | 7% |
Agricultural and Biological Sciences | 4 | 5% |
Other | 13 | 15% |
Unknown | 20 | 24% |