Quantum mechanical investigations of photoactive molecules and design of molecular machine and logical devices

Tamulis, Arvydas; Tamulienė, Jelena; Balevicius, M. L.; Nunzi, Jean‐Michel

doi:10.1117/12.386382

Cited by 3 publications

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“…Molecular electronics and spintronics logical devices which regulate photosynthesis and self-assemble to mobile computing structures, have been quantum mechanically designed. They can selectively capture and transport nuclear, chemical and microbial pollutants (Tamulis et al 2003(Tamulis et al , 2007Tamuliene et al 2004;Rinkevicius et al 2006;Tamulis 2008a, b). Another variety of device will regulate the photosynthesis and growth of artificial minimal living cells under conditions of external magnetic fields, while also providing a perspective for success in the synthesis of new forms of artificial living organisms (Tamulis et al , 2008Tamulis 2007a, b, 2008;Tamulis 2008a, b, c).…”

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confidence: 98%

The Emergence and Evolution of Life in a “Fatty Acid World” Based on Quantum Mechanics

Tamulis

Grigalavicius

2010

Orig Life Evol Biosph

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Quantum mechanical based electron correlation interactions among molecules are the source of the weak hydrogen and Van der Waals bonds that are critical to the self-assembly of artificial fatty acid micelles. Life on Earth or elsewhere could have emerged in the form of self-reproducing photoactive fatty acid micelles, which gradually evolved into nucleotide-containing micelles due to the enhanced ability of nucleotide-coupled sensitizer molecules to absorb visible light. Comparison of the calculated absorption spectra of micelles with and without nucleotides confirmed this idea and supports the idea of the emergence and evolution of nucleotides in minimal cells of a so-called Fatty Acid World. Furthermore, the nucleotide-caused wavelength shift and broadening of the absorption pattern potentially gives these molecules an additional valuable role, other than a purely genetic one in the early stages of the development of life. From the information theory point of view, the nucleotide sequences in such micelles carry positional information providing better electron transport along the nucleotide-sensitizer chain and, in addition, providing complimentary copies of that information for the next generation. Nucleotide sequences, which in the first period of evolution of fatty acid molecules were useful just for better absorbance of the light in the longer wavelength region, later in the PNA or RNA World, took on the role of genetic information storage.

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confidence: 98%