Kyushu University Academic Staff Educational and Research Activities Database
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Andrew Mark Spring Last modified date:2023.05.09

Associate Professor / Department of Molecular and Materials Sciences (MMS)
Department of Internationalization and Future Conception
Faculty of Engineering Sciences

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Academic Degree
Master of Chemistry (MChem), Doctor of Philosophy (Ph.D.) in Materials Chemistry
Country of degree conferring institution (Overseas)
Field of Specialization
Polymer Chemistry / Organic Synthesis / Electro-optics
Total Priod of education and research career in the foreign country
Outline Activities
Electro-optic Polymers:
Electro-optic (EO) modulators are essential for electrical to optical transitions and high-speed optical interconnects. EO polymers have been used to fabricate modulators on silicon-on-insulator substrates. Optimization of the EO polymer structure is necessary to further reduce the driving voltage, power consumption and optic loss. ROMP has successfully been used to prepare well-controlled EO polymers. The ROMP monomers must exhibit high ring strain and ease of functionalization to include active substituents, while polymers must display excellent solubility allowing them to be spin coated giving films which are flat and homogeneous.

Conjugated Polymers:
Conjugated Polymers can be deposited from solution on a range of substrates at low temperatures such as paper or plastic to suit the desired application via well established methods such as spin coating, dip coating, ink jet printing, micro stamping and low resolution patterning. The initial research into conjugated electroluminescent materials was one of the major scientific discoveries of the last four decades and since then scientists have been able to optimise important physical properties such as the colour and efficiency of emission, charge mobility and light harvesting by chemically altering the structures. This advancement has led to the fabrication of a wide variety of organic based electronic devices such as OLEDs, OPVs, OFETs and flexible circuits.

Carbon Nanotube Inks:
The high electrical conductivity, wide spectral range of transparency, nano-porosity, and flexibility render carbon nanotube (CNT) thin films (10−100 nm) attractive as surrogates of semiconducting oxides for electrode fabrication. For practical use in applications, solution processability is desirable as this is amenable to the plastic substrates required for roll-to-roll printing. The avoidance of high vacuum systems furthermore reduces costs significantly. Key requirements for the preparation of high quality CNT films is that stable inks must be formulated with a high degree of nanotube dispersion, the CNTs themselves must be of high quality, and the dispersion aids should be easily removed after coating.
Research Interests
  • EO polymeric materials synthesis and applications
    keyword : EO Polymers
  • Macromolecular Materials and Applications.
    keyword : Polymer Chemistry
Academic Activities
Membership in Academic Society
  • The Society of Polymer Science, Japan. (SPSJ)
  • Royal Society of Chemistry (UK)
Educational Activities
Physical Property of Polymer Materials II course (15 classes)
Fundamental's of Green Engineering (1 class)