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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Self-assembling amphiphilic molecules: Synthesis in simulated interstellar/precometary ices
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Self-assembling amphiphilic molecules: Synthesis in simulated interstellar/precometary ices

机译：自组装的两亲分子：在模拟星际/彗星冰中的合成

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摘要

Interstellar gas and dust constitute the primary material from which the solar system formed. Near the end of the hot early phase of star and planet formation, volatile, less refractory materials were transported into the inner solar system as comets and interplanetary dust particles. Once the inner planets had suffi- ciently cooled, late accretionary in fall seeded them with complex organic compounds [Oro, J. (1961) Nature (London) 190, 389--390: Delsemme, A. H. (1984) Origins Life 14, 51--60: Anders, E. (1989) Nature (London) 342, 2S5--257; Chyba, C. F. & Sagan, C. (1992) Nature (London) 355. 125--131]. Delivery of such extraterrestrial compounds may have contributed to the organic inventory neces- sary for the origin of life. Interstellar ices, the building blocks of comets, tie up a large fraction of the biogenic elements available in molecular clouds. In our efforts to understand their synthesis, chemical composition, and physical properties, we report here that a complex mixture of molecules is produced by UV photolysis of realistic, interstellar ice analogs, and that some of the components have properties relevant to the origin of life, including the ability to self-assemble into vesicular structures.
机译：星际气体和尘埃是形成太阳系的主要物质。在恒星和行星形成的热早期阶段即将结束时，易挥发，耐火材料较少的物质作为彗星和行星际尘埃颗粒被输送到内部太阳系。一旦内行星充分冷却，秋天的后期积聚就向它们播种了复杂的有机化合物[Oro，J.（1961）Nature（London）190，389--390：Delsemme，AH（1984）Origins Life 14，51 --60：Anders，E.（1989）自然（伦敦）342，2S5--257; Chyba，C. F.＆Sagan，C.（1992）Nature（London）355. 125--131]。这类外星化合物的交付可能有助于生命起源所必需的有机库存。星际冰是彗星的组成部分，将分子云中可利用的大部分生物成因元素捆绑在一起。为了了解它们的合成，化学组成和物理性质，我们在这里报告说，通过现实的星际冰类似物的紫外线光解可以产生复杂的分子混合物，并且其中某些成分具有与生命起源相关的性质包括自组装成囊泡结构的能力。

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