Small molecular organic nanocrystals resemble carbon nanodots in terms of their properties
The most commonly observed phenomena in carbon nanodots (CNDs) are the strong excitation wavelength dependent multicolor fluorescence emission and the particle size distribution between 3-5 nm observed using a transmission electron microscope (TEM). However, it is not evident yet whether the emissio...
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| Veröffentlicht in: | Chemical science (Cambridge) 2018-01, Vol.9 (1), p.175-180 |
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| creator | Khan, Syamantak Sharma, Akshita Ghoshal, Sourav Jain, Sanjhal Hazra, Montu K Nandi, Chayan K |
| description | The most commonly observed phenomena in carbon nanodots (CNDs) are the strong excitation wavelength dependent multicolor fluorescence emission and the particle size distribution between 3-5 nm observed using a transmission electron microscope (TEM). However, it is not evident yet whether the emission originates from the particles observed using a TEM. In this article, we show that hydrothermal treatment of citric acid produces methylenesuccinic acid, which gives rise to hydrogen-bonded nano-assemblies with CND-like properties. While single crystal X-ray crystallography confirms the structure of methylenesuccinic acid, fluorescence correlation spectroscopy (FCS) confirms the presence of a molecular fluorophore with an average hydrodynamic diameter of ∼0.9 nm. This size is much smaller than the size of the particles observed using a TEM. We conclude that the particles observed using a TEM are the drying mediated nanocrystals of methylenesuccinic acid. |
| doi_str_mv | 10.1039/c7sc02528a |
| format | Article |
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However, it is not evident yet whether the emission originates from the particles observed using a TEM. In this article, we show that hydrothermal treatment of citric acid produces methylenesuccinic acid, which gives rise to hydrogen-bonded nano-assemblies with CND-like properties. While single crystal X-ray crystallography confirms the structure of methylenesuccinic acid, fluorescence correlation spectroscopy (FCS) confirms the presence of a molecular fluorophore with an average hydrodynamic diameter of ∼0.9 nm. This size is much smaller than the size of the particles observed using a TEM. 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However, it is not evident yet whether the emission originates from the particles observed using a TEM. In this article, we show that hydrothermal treatment of citric acid produces methylenesuccinic acid, which gives rise to hydrogen-bonded nano-assemblies with CND-like properties. While single crystal X-ray crystallography confirms the structure of methylenesuccinic acid, fluorescence correlation spectroscopy (FCS) confirms the presence of a molecular fluorophore with an average hydrodynamic diameter of ∼0.9 nm. This size is much smaller than the size of the particles observed using a TEM. We conclude that the particles observed using a TEM are the drying mediated nanocrystals of methylenesuccinic acid.</description><subject>Acids</subject><subject>Chemical bonds</subject><subject>Citric acid</subject><subject>Crystal structure</subject><subject>Crystallography</subject><subject>Fluorescence</subject><subject>Hydrogen bonding</subject><subject>Hydrothermal crystal growth</subject><subject>Hydrothermal treatment</subject><subject>Nanocrystals</subject><subject>Particle size distribution</subject><subject>Single crystals</subject><subject>Transmission electron microscopy</subject><issn>2041-6520</issn><issn>2041-6539</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNpdkE1Lw0AQhhdRbKm9-ANkwYsI0f3IbpJjCX5BwUP14iVsJhNNSbJ1Nzn037u2tQfnMDMwz7wzvIRccnbHmczuIfHAhBKpOSFTwWIeaSWz02Mv2ITMvV-zEFJyJZJzMhGZFhlL1ZR8rDrTtrSzLcLYGket-zR9A7Q3vQW39YNpPXXosStbpGBcafvdsLKDp01PB3Sdp7amwxc2jm6c3aAbGvQX5KwOyzg_1Bl5f3x4y5-j5evTS75YRiAVHyJdS50oDUwxzWIoZVUrLatYo6jipDZKJliXKUJmBKCMBUBapYIlpTIIPJMzcrPXDae_R_RD0TUesG1Nj3b0hWBCxjwkFdDrf-jajq4P3wWKszTjaawDdbunwFnvHdbFxjWdcduCs-LX9CJPVvnO9EWArw6SY9lhdUT_LJY_xFF8vQ</recordid><startdate>20180107</startdate><enddate>20180107</enddate><creator>Khan, Syamantak</creator><creator>Sharma, Akshita</creator><creator>Ghoshal, Sourav</creator><creator>Jain, Sanjhal</creator><creator>Hazra, Montu K</creator><creator>Nandi, Chayan K</creator><general>Royal Society of Chemistry</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-0622-8925</orcidid><orcidid>https://orcid.org/0000-0002-4584-0738</orcidid></search><sort><creationdate>20180107</creationdate><title>Small molecular organic nanocrystals resemble carbon nanodots in terms of their properties</title><author>Khan, Syamantak ; Sharma, Akshita ; Ghoshal, Sourav ; Jain, Sanjhal ; Hazra, Montu K ; Nandi, Chayan K</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c351t-6f36756c050604cb3df563d46e2d47fa537efb8ec9a2ce342cc8d8207b5aec193</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Acids</topic><topic>Chemical bonds</topic><topic>Citric acid</topic><topic>Crystal structure</topic><topic>Crystallography</topic><topic>Fluorescence</topic><topic>Hydrogen bonding</topic><topic>Hydrothermal crystal growth</topic><topic>Hydrothermal treatment</topic><topic>Nanocrystals</topic><topic>Particle size distribution</topic><topic>Single crystals</topic><topic>Transmission electron microscopy</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Khan, Syamantak</creatorcontrib><creatorcontrib>Sharma, Akshita</creatorcontrib><creatorcontrib>Ghoshal, Sourav</creatorcontrib><creatorcontrib>Jain, Sanjhal</creatorcontrib><creatorcontrib>Hazra, Montu K</creatorcontrib><creatorcontrib>Nandi, Chayan K</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>MEDLINE - Academic</collection><jtitle>Chemical science (Cambridge)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Khan, Syamantak</au><au>Sharma, Akshita</au><au>Ghoshal, Sourav</au><au>Jain, Sanjhal</au><au>Hazra, Montu K</au><au>Nandi, Chayan K</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Small molecular organic nanocrystals resemble carbon nanodots in terms of their properties</atitle><jtitle>Chemical science (Cambridge)</jtitle><addtitle>Chem Sci</addtitle><date>2018-01-07</date><risdate>2018</risdate><volume>9</volume><issue>1</issue><spage>175</spage><epage>180</epage><pages>175-180</pages><issn>2041-6520</issn><eissn>2041-6539</eissn><abstract>The most commonly observed phenomena in carbon nanodots (CNDs) are the strong excitation wavelength dependent multicolor fluorescence emission and the particle size distribution between 3-5 nm observed using a transmission electron microscope (TEM). 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| ispartof | Chemical science (Cambridge), 2018-01, Vol.9 (1), p.175-180 |
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| source | DOAJ Directory of Open Access Journals; PubMed Central Open Access; EZB-FREE-00999 freely available EZB journals; PubMed Central |
| subjects | Acids Chemical bonds Citric acid Crystal structure Crystallography Fluorescence Hydrogen bonding Hydrothermal crystal growth Hydrothermal treatment Nanocrystals Particle size distribution Single crystals Transmission electron microscopy |
| title | Small molecular organic nanocrystals resemble carbon nanodots in terms of their properties |
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