Journal article
Guanine Crystallization in Aqueous Solutions Enables Control over Crystal Size and Polymorphism
Crystal Growth & Design, Vol.16(9), pp.4975-4980
Sep/2016
Abstract
Anhydrous guanine crystals are among the most widespread organic crystals used by organisms to produce structural colors. The main advantage of guanine is its exceptionally high refractive index in the reflecting direction (similar to 1.8). For the same reason, guanine is a promising candidate material for a variety of different optical applications. Crystallization of guanine is challenging and usually involves using polar aprotic organic solvents such as dimethyl sulfoxide (DMSO). Here, we show that the crystallization of guanine from aqueous solutions is possible under conditions that provide control over crystal polymorphism and size. Using this approach we were able produce large crystals of the elusive guanine monohydrate phase. We were also able to rationalize the formation of the different phases obtained as a function of which tautomer of guanine is stable in solutions of varying pH.
Details
- Title
- Guanine Crystallization in Aqueous Solutions Enables Control over Crystal Size and Polymorphism
- Creators
- Dvir Gur (null) - 972WIS_INST___9Maria Pierantoni (null) - 972WIS_INST___9Neta Elool Dov (null)Anna Hirsh (null)Yishay (Isai) Feldman (null) - 972WIS_INST___100Steve Weiner (null) - 972WIS_INST___9Lia Addadi (null) - 972WIS_INST___9
- Resource Type
- Journal article
- Publication Details
- Crystal Growth & Design, Vol.16(9), pp.4975-4980; Sep/2016
- Number of pages
- 6
- Language
- English
- DOI
- https://doi.org/10.1021/acs.cgd.6b00566
- Grant note
- Israel Science Foundation [2012\224330*]_ALMAME_DELIMITER_
- Record Identifier
- 993264647603596
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