Welcome to titoo.dk

Welcome to my homepage. My name is Titoo and this site showcases an online résumé together with short descriptions of my professional interests. Browse through the blog posts below, or read about my interests using the navigation menu above. 


Contributed to “Handbook of Single-Molecule Electronics”

Kasper Moth-Poulsen, associate professor at Chalmers University of Technology, Gothenburg, Sweden, is the editor of the new release “Handbook of Single-Molecule Electronis”. This book describes in detail both established methods and recent advances in the field, including vibrational effects, switching phenomena, quantum interference, thermal power, and parallel assembly strategies.

I am proud to have contributed to this collection covering important aspects of single-molecule electronics by co-authoring Chapter 12: “Parallel Self-Assembly Strategies toward Multiple Single-Molecule Electronic Devices” and to have designed the frontpage cover of the book:

Cover by Titoo Jain

Read more about the release here: https://www.crcpress.com/Handbook-of-Single-Molecule-Electronics/MothPoulsen/9789814463386

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Career example: Fra nanokredsløb til gigantiske gasanlæg

University of Copenhagen publishes articles on its website featuring career examples of where students in nanoscience find job opportunities after their education as an appetizer for young students about to chose their field of study. The most recent addition of articles briefly describe my change of field from researching in nano-electronics to being Product Manager in the chemicals industry.

Read the article on the university’s website here (in danish only):  http://studier.ku.dk/bachelor/nanoscience/faglig-profil-og-job/jobmuligheder/topsoe/

Career: Titoo Jain ved opstart af gasanlæg i Kina

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3D Graphics Portfolio added

During the years, I have enjoyed creating 3D graphics / science art resulting in nice representations of my research topics. Some of my images are now available via the below gallery.


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New position as Product Manager

After 16 months in my position as Catalyst Engineer with Haldor Topsoe, I have now been appointed Product Manager for Feed Purification Catalysts and Absorbents.

During my role as Catalyst Engineer, I have gained experience with high-level technical customer service within catalyst calculations, quotations, performance evaluations as well as on-site assignments as plant start-ups, catalyst loadings and activations. Today, I start my responsibilities as a Product Manager within Feed Purification products for ammonia, hydrogen, SNG, GTL, TIGAS etc. I look very much forward to get started on my new challenging tasks which will cover e.g. product team management, product portfolio and strategy implementation, technical support for sales and service functions, production and development, market intelligence, and everything in between!

Haldor Topsoe


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Anisotropic Growth of Gold Nanoparticles

Our paper on “Anisotropic Growth of Gold Nanoparticles using Cationic Gemini Surfactants: Effects of Structure Variations in Head and Tail Groups” has been published in Journal of Materials Chemistry C.

A library of gemini surfactants is employed to study surfactant directed anisotropic growth of gold nanoparticles. The surfactants are modified with respect to the length and type of the tails, as well as of the spacer group. By analyzing the structure of the anisotropic nanoparticles, it is possible to extract information on how the structure of the surfactants influences the anisotropic gold nanocrystal growth. We find that the tail length of the surfactants has a greater influence on the resulting nanoparticle aspect ratio compared to the chemical nature of the spacer group. While clear trends between the aspect ratio and the tail as well as spacer length remain elusive, we observe that surfactants with a critical micelle concentration of [similar]1 mM produce particles with the highest aspect ratio. A crystallographic analysis of nanorods obtained using gemini surfactants reveals that they grow along 〈100〉 and are bound by {310} facets. This observation, which is specific for gemini surfactants, is explained by taking into account the preferential alignment of gemini surfactants with surface steps as suggested by electronic structure calculations.

Anisotropic Growth of Gold Nanoparticles using Cationic Gemini Surfactants


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Wet Chemical Synthesis of Soluble Gold Nanogaps

My account “Wet Chemical Synthesis of Soluble Gold Nanogaps” is now published in Accounts of Chemical Research!

A central challenge in molecular electronics is to create electrode pairs separated by only a few nanometers that can accommodate a single molecule of interest to be optically or electrically characterized while residing in the gap. Current techniques for nanogap fabrication are largely based on top-down approaches and often rely on subsequent deposition of molecules into the nanogap. In such an approach, the molecule may bridge the gap differently with each experiment due to variations at the metal–molecule interface. Conversely, chemists can readily synthesize gold nanorods (AuNRs) in aqueous solution. Through controlled end-to-end assembly of the AuNRs into dimers or chains, facilitated via target molecules, they can be used as electrical contacts. In this way, the preparation of AuNR–molecule–AuNR junctions by wet chemical methods may afford a large number of identical devices with little variation in the interface between molecule and electrode (AuNR).

Wet Chemical Synthesis of Soluble Gold Nanogaps

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Catalyst Engineer at Haldor Topsoe

Today, I have started my first industrial position outside of academia. As a Catalyst Engineer with Haldor Topsoe, I will e.g. be travelling world-wide providing technical service (catalyst activation and plant start-ups) to chemical plants. I will also perform advanced catalyst calculations, simulations and plant performance evaluations.

I am really excited about my new career in the Danish chemicals industry!

Haldor Topsoe

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