生命的耗散光化学起源：腺嘌呤的UVC非生物发生
A Dissipative Photochemical Origin of Life: The UVC Abiogenisis of Adenine
摘要：
我描述了非平衡热力学和光化学机制，这可能已经参与了耗散结构，增殖和演化的基本分子在生命的起源，从更简单，更常见的前体分子下的印象深刻的UVC光子通量的太古代。基本分子的耗散结构由其强而宽的波长吸收带和在该波长区域中的快速无辐射激发证明。中间产品的自动和交叉催化性质导致了扩散。由于具有扩散的光化学和化学反应的非线性，系统具有许多稳态，因此出现了向通常增加的光子耗散功效的浓度分布状态的演变，这可以通过放大分叉附近的分子浓度波动来实现。给出了一个例子的光化学耗散abiogenisis腺嘌呤从前体HCN和H $_2$ O内的脂肪酸囊泡在一个炎热的海洋表面，驱动远离平衡的印象UVC光。在不同环境条件下求解了动力学方程，并在经典不可逆热力学理论框架内对结果进行了分析。
英文摘要：
I describe the non-equilibrium thermodynamics and the photochemical mechanisms which may have been involved in the dissipative structuring, proliferation and evolution of the fundamental molecules at the origin of life from simpler and more common precursor molecules under the impressed UVC photon flux of the Archean. Dissipative structuring of the fundamental molecules is evidenced by their strong and broad wavelength absorption bands and rapid radiationless dexcitation in this wavelength region. Proliferation arises from the auto- and cross-catalytic nature of the intermediate products. Evolution towards states of concentration profiles of generally increasing photon disspative efficacy arises since the system has numerous stationary states, due to the non-linearity of the photochemical and chemical reactions with diffusion, which can be reached by amplification of a molecular concentration fluctuation near a bifurcation. An example is given of photochemical dissipative abiogenisis of adenine from the precursors HCN and H$_2$O within a fatty acid vesicle on a hot ocean surface, driven far from equilibrium by the impressed UVC light. The kinetic equations are resolved under different environmental conditions and the results analyzed within the framework of Classical Irreversible Thermodynamic theory.
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