PROBLEM TO BE SOLVED: To provide porous fine particles, different from vesicles formed from a surfactant or a polymer, having pores on their surfaces and also having characteristics which have not seen in an inorganic porous material represented by zeolite-mesoporous silica.SOLUTION: The porous fine particles formed by spherically agglomerating tubular structural materials are produced by a method comprising a step of dissolving each of a peptide lipid expressed by the following formula (I): RCO(NH-CHR-CO)mOH [wherein, R is a 6-24C hydrocarbon group R is an amino acid side chain and (m) is an integer of 1 to 10] and a metal salt in a solvent heated to a temperature at or lower than its boiling point, a step of mixing each of the solutions, a step of standing the above mixture still at a room temperature, a step of forming the tubular structural materials by self-agglomerating in the solution and a step of spherically agglomerating each of the tubular structural materials to precipitate as the porous fine particles.COPYRIGHT: (C)2010,JPO&INPIT【課題】界面活性剤や高分子から形成されるベシクルと違い、表面に孔をもつ多孔性微細粒子であり、且つ、ゼオライト・メソポーラスシリカに代表される無機多孔性材料にはない特性をもつ、多孔性微粒子とその製造方法を提供する。【解決手段】チューブ状構造体が球状に凝集した多孔性微細粒子であって、該多孔性微粒子は、下記一般式(I)RCO(NH-CHR’-CO)mOH(I)(式中、Rは炭素数6~24の炭化水素基、R’はアミノ酸側鎖、mは1~10の整数を表す。)で表わされるペプチド脂質及び金属塩を沸点以下に加温された溶媒にそれぞれ溶解させる段階、それぞれの溶液を混合する段階、これを室温で静置する段階、溶液中で自己集合することによりチューブ状構造体が生成する段階、及びそれらのチューブ状構造体が球状に凝集して多孔性微細粒子として析出する段階から製造される。【選択図】なし
