Direct Visualization of the Two-step Nucleation Model by Fluorescence Color Changes during Evaporative Crystallization from Solution

被引：60

作者：

Ito, Fuyuki ^{[1
]}

Suzuki, Yukino ^{[1
]}

Fujimori, Jun-ichi ^{[1
]}

Sagawa, Takehiro ^{[1
]}

Hara, Mitsuo ^{[2
]}

Seki, Takahiro ^{[2
]}

Yasukuni, Ryohei ^{[3
]}

de la Chapelle, Marc Lamy ^{[3
]}

机构：

[1] Shinshu Univ, Inst Educ, Dept Chem, 6-Ro Nishinagano, Nagano 3808544, Japan

[2] Nagoya Univ, Grad Sch Engn, Dept Mol Design & Engn, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648603, Japan

[3] Univ Paris 13, Sorbonne Paris Cite, Lab CSPBAT, CNRS,UMR 7244, 74 Rue Marcel Cachin, F-93017 Bobigny, France

来源：

SCIENTIFIC REPORTS | 2016年 / 6卷

关键词：

SOLVENT EVAPORATION; INDUCED EMISSION; CRYSTALS;

D O I：

10.1038/srep22918

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The two-step nucleation model for crystal nuclei formation explains several experimental and theoretical results better than the classical nucleation theory. We report here direct visualization of the two-step nucleation model for organic molecular crystallization. Evaporative crystallization from a solution of a dibenzoylmethane boron complex that displays mechanofluorochromism, a fluorescence color change induced by mechanical perturbation, was probed by fluorescence change. The dependence of fluorescence change on dispersion concentration of the complex in a polymer matrix was also investigated. We detected transitional emission from the amorphous cluster state prior to crystallization. This is the first demonstration of the two-step nucleation model based on fluorescence color changes.

引用

页数：6

共 18 条

[1] Nucleation of Organic CrystalsA Molecular Perspective [J].