Kees Hummelen: a creative, inspirational and unorthodox scientist from Groningen

Journal of Materials Chemistry C ◽

10.1039/d1tc90193a ◽

2021 ◽

Author(s):

Bert Meijer

Keyword(s):

Single Molecule ◽

Field Effect ◽

Field Effect Transistors ◽

Organic Photovoltaic ◽

Materials Chemistry ◽

Personal Essay ◽

Special Issue ◽

Societal Challenges ◽

Single Molecule Electronics ◽

Made In

To mark the occasion of the official retirement of Prof. J. C. (Kees) Hummelen, the Journal of Materials Chemistry C has dedicated a special issue to honour his achievements in the field of materials chemistry. This personal essay, written by his study mate, close colleague and long-standing friend, highlights the pioneering contributions that Kees Hummelen has made in various fields of organic and materials chemistry during his 45 year long career. His research in chemistry began with asymmetric synthesis and chemiluminescence and culminated in his most notable results in the field of fullerene chemistry and the development of organic photovoltaic technology. More recently, he has also been active in the field of materials for molecular field-effect transistors, biosensors and the development of single molecule electronics based on internal π logic. He was also a dedicated teacher and was deeply involved in societal challenges. Because of my personal relationship with Kees during all of those 45 years, I have written this essay in a somewhat unorthodox way; a way that is so characteristic of Kees.

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Organic Materials for Multifunctional Transistor-Based Devices

MRS Proceedings ◽

10.1557/proc-725-p6.7 ◽

2002 ◽

Vol 725 ◽

Author(s):

H.E. Katz ◽

T. Someya ◽

B. Crone ◽

X.M. Hong ◽

M. Mushrush ◽

...

Keyword(s):

Field Effect ◽

Field Effect Transistors ◽

Low Cost ◽

Organic Field Effect Transistors ◽

Large Area ◽

Microprocessor Technology ◽

Silicon Based ◽

Electronic Ink ◽

Made In ◽

Charge Channel

Organic field-effect transistors (OFETs) are “soft material” versions of accumulationmode silicon-based FETs, where a gate field across a dielectric induces a conductive charge channel at the interface of the dielectric with a semiconductor, between source and drain electrodes. Charge carrier mobilities >0.01 and on/off ratios >10,000 are routinely obtained, adequate for a few specialized applications such as electrophoretic pixel switches but well below standards established for silicon microprocessor technology. Still, progress that has been made in solution-phase semiconductor deposition and the printing of contacts and dielectrics stimulates the development of OFET circuits for situations where extreme low cost, large area, and mechanical flexibility are important. Circuits with hundreds of OFETs have been demonstrated and a prototype OFETcontrolled black-on-white “electronic ink” sign has been fabricated.

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First principle study of the effect of defects on performance of single-molecule pentacene field effect transistors

Journal of Theoretical and Applied Physics ◽

10.1007/s40094-015-0182-8 ◽

2015 ◽

Vol 9 (3) ◽

pp. 213-219 ◽

Cited By ~ 2

Author(s):

Bahniman Ghosh ◽

Akash Gramin

Keyword(s):

Single Molecule ◽

Field Effect ◽

Field Effect Transistors ◽

First Principle

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Single molecule color controllable light emitting organic field effect transistors for white light emission with high color stability

Applied Physics Letters ◽

10.1063/1.3202763 ◽

2009 ◽

Vol 95 (6) ◽

pp. 063303 ◽

Cited By ~ 15

Author(s):

Tung-Huei Ke ◽

Robert Gehlhaar ◽

Chih-Hsin Chen ◽

Jiann-T Lin ◽

Chung-Chih Wu ◽

...

Keyword(s):

Single Molecule ◽

White Light ◽

Field Effect ◽

Light Emission ◽

Field Effect Transistors ◽

Color Stability ◽

White Light Emission ◽

Organic Field Effect Transistors ◽

Light Emitting

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Dirac-cone induced gating enhancement in single-molecule field-effect transistors

Nanoscale ◽

10.1039/c9nr01551e ◽

2019 ◽

Vol 11 (27) ◽

pp. 13117-13125 ◽

Cited By ~ 1

Author(s):

Hantao Sun ◽

Xunshan Liu ◽

Yanjie Su ◽

Bing Deng ◽

Hailin Peng ◽

...

Keyword(s):

Solid State ◽

Single Molecule ◽

Field Effect ◽

Field Effect Transistors ◽

Dirac Cone ◽

Electrostatic Gating ◽

Bottom Gate

Dirac-cone induced electrostatic gating enhancement in single-molecule FETs with graphene electrodes and a solid-state local bottom gate.

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Molecular Recognition by Silicon Nanowire Field-Effect Transistor and Single-Molecule Force Spectroscopy

Micromachines ◽

10.3390/mi13010097 ◽

2022 ◽

Vol 13 (1) ◽

pp. 97

Author(s):

Francisco M. Espinosa ◽

Manuel R. Uhlig ◽

Ricardo Garcia

Keyword(s):

Molecular Recognition ◽

Single Molecule ◽

Field Effect ◽

Field Effect Transistors ◽

Silicon Nanowire ◽

Force Spectroscopy ◽

Label Free ◽

Electrical Measurements ◽

Single Molecule Force Spectroscopy ◽

Adsorption Sites

Silicon nanowire (SiNW) field-effect transistors (FETs) have been developed as very sensitive and label-free biomolecular sensors. The detection principle operating in a SiNW biosensor is indirect. The biomolecules are detected by measuring the changes in the current through the transistor. Those changes are produced by the electrical field created by the biomolecule. Here, we have combined nanolithography, chemical functionalization, electrical measurements and molecular recognition methods to correlate the current measured by the SiNW transistor with the presence of specific molecular recognition events on the surface of the SiNW. Oxidation scanning probe lithography (o-SPL) was applied to fabricate sub-12 nm SiNW field-effect transistors. The devices were applied to detect very small concentrations of proteins (500 pM). Atomic force microscopy (AFM) single-molecule force spectroscopy (SMFS) experiments allowed the identification of the protein adsorption sites on the surface of the nanowire. We detected specific interactions between the biotin-functionalized AFM tip and individual avidin molecules adsorbed to the SiNW. The measurements confirmed that electrical current changes measured by the device were associated with the deposition of avidin molecules.

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