Size-Selected Zinc Sulfide Nanocrystallites: Synthesis, Structure, and Optical Studies
We report the synthesis of three sizes of thioglycerol-capped precipitated ZnS nanocrystallites with relatively narrow size distributions, having average sizes of 1.8, 2.5, and 3.5 nm, respectively. These crystallites were extracted as free-standing powders which remain stable under normal atmospher...
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| Veröffentlicht in: | Chemistry of materials 2000-04, Vol.12 (4), p.1018-1024 |
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| creator | Nanda, J Sapra, Sameer Sarma, D. D Chandrasekharan, Nirmala Hodes, Gary |
| description | We report the synthesis of three sizes of thioglycerol-capped precipitated ZnS nanocrystallites with relatively narrow size distributions, having average sizes of 1.8, 2.5, and 3.5 nm, respectively. These crystallites were extracted as free-standing powders which remain stable under normal atmospheric conditions and can be redispersed in suitable solvents. The nanocrystallite powders were characterized using X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), electron diffraction (ED), energy dispersive analysis of X-rays (EDAX), and UV−vis optical absorption. The synthesized nanocrystallites show typical lattice spacings corresponding to the cubic phase of ZnS, as confirmed from HRTEM, ED, and XRD. The lattice-resolved structures within a single nanocrystallite show characteristic defects such as twinning and dislocations. We present a comparative analysis of the size of nanocrystallites obtained from X-ray diffraction and TEM. The position of the excitonic transitions as seen in the optical absorption spectrum of the nanocrystallites was compared with the predictions of various models that correlate the size versus band gap of these nanocrystallites. |
| doi_str_mv | 10.1021/cm990583f |
| format | Article |
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D ; Chandrasekharan, Nirmala ; Hodes, Gary</creator><creatorcontrib>Nanda, J ; Sapra, Sameer ; Sarma, D. D ; Chandrasekharan, Nirmala ; Hodes, Gary ; Indian Inst. of Science, Bangalore (IN)</creatorcontrib><description>We report the synthesis of three sizes of thioglycerol-capped precipitated ZnS nanocrystallites with relatively narrow size distributions, having average sizes of 1.8, 2.5, and 3.5 nm, respectively. These crystallites were extracted as free-standing powders which remain stable under normal atmospheric conditions and can be redispersed in suitable solvents. The nanocrystallite powders were characterized using X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), electron diffraction (ED), energy dispersive analysis of X-rays (EDAX), and UV−vis optical absorption. The synthesized nanocrystallites show typical lattice spacings corresponding to the cubic phase of ZnS, as confirmed from HRTEM, ED, and XRD. The lattice-resolved structures within a single nanocrystallite show characteristic defects such as twinning and dislocations. We present a comparative analysis of the size of nanocrystallites obtained from X-ray diffraction and TEM. The position of the excitonic transitions as seen in the optical absorption spectrum of the nanocrystallites was compared with the predictions of various models that correlate the size versus band gap of these nanocrystallites.</description><identifier>ISSN: 0897-4756</identifier><identifier>EISSN: 1520-5002</identifier><identifier>DOI: 10.1021/cm990583f</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>CHEMICAL PREPARATION ; Chemistry ; Colloidal state and disperse state ; Cross-disciplinary physics: materials science; rheology ; CRYSTAL STRUCTURE ; Disperse systems ; Elements and non-metal compounds (oxides, hydroxides, hydrides, sulfides, carbides, ...) ; Exact sciences and technology ; General and physical chemistry ; Growth from solutions ; Inorganic chemistry and origins of life ; MATERIALS SCIENCE ; Methods of crystal growth; physics of crystal growth ; Nanoscale materials and structures: fabrication and characterization ; OPTICAL PROPERTIES ; PARTICLE SIZE ; Physics ; Powders ; Preparations and properties ; SEMICONDUCTOR MATERIALS ; ZINC SULFIDES</subject><ispartof>Chemistry of materials, 2000-04, Vol.12 (4), p.1018-1024</ispartof><rights>Copyright © 2000 American Chemical Society</rights><rights>2000 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a418t-9a4527a44d579f64fba00e93083a7351455ec5eb4bdf64d04ea37f0424aae9f73</citedby><cites>FETCH-LOGICAL-a418t-9a4527a44d579f64fba00e93083a7351455ec5eb4bdf64d04ea37f0424aae9f73</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://pubs.acs.org/doi/pdf/10.1021/cm990583f$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/cm990583f$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>230,314,776,780,881,2752,27053,27901,27902,56713,56763</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=1487351$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/20075552$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Nanda, J</creatorcontrib><creatorcontrib>Sapra, Sameer</creatorcontrib><creatorcontrib>Sarma, D. D</creatorcontrib><creatorcontrib>Chandrasekharan, Nirmala</creatorcontrib><creatorcontrib>Hodes, Gary</creatorcontrib><creatorcontrib>Indian Inst. of Science, Bangalore (IN)</creatorcontrib><title>Size-Selected Zinc Sulfide Nanocrystallites: Synthesis, Structure, and Optical Studies</title><title>Chemistry of materials</title><addtitle>Chem. Mater</addtitle><description>We report the synthesis of three sizes of thioglycerol-capped precipitated ZnS nanocrystallites with relatively narrow size distributions, having average sizes of 1.8, 2.5, and 3.5 nm, respectively. These crystallites were extracted as free-standing powders which remain stable under normal atmospheric conditions and can be redispersed in suitable solvents. The nanocrystallite powders were characterized using X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), electron diffraction (ED), energy dispersive analysis of X-rays (EDAX), and UV−vis optical absorption. The synthesized nanocrystallites show typical lattice spacings corresponding to the cubic phase of ZnS, as confirmed from HRTEM, ED, and XRD. The lattice-resolved structures within a single nanocrystallite show characteristic defects such as twinning and dislocations. We present a comparative analysis of the size of nanocrystallites obtained from X-ray diffraction and TEM. The position of the excitonic transitions as seen in the optical absorption spectrum of the nanocrystallites was compared with the predictions of various models that correlate the size versus band gap of these nanocrystallites.</description><subject>CHEMICAL PREPARATION</subject><subject>Chemistry</subject><subject>Colloidal state and disperse state</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>CRYSTAL STRUCTURE</subject><subject>Disperse systems</subject><subject>Elements and non-metal compounds (oxides, hydroxides, hydrides, sulfides, carbides, ...)</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Growth from solutions</subject><subject>Inorganic chemistry and origins of life</subject><subject>MATERIALS SCIENCE</subject><subject>Methods of crystal growth; physics of crystal growth</subject><subject>Nanoscale materials and structures: fabrication and characterization</subject><subject>OPTICAL PROPERTIES</subject><subject>PARTICLE SIZE</subject><subject>Physics</subject><subject>Powders</subject><subject>Preparations and properties</subject><subject>SEMICONDUCTOR MATERIALS</subject><subject>ZINC SULFIDES</subject><issn>0897-4756</issn><issn>1520-5002</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><recordid>eNpt0M1q3DAQB3BRWug2zaFvYGh7CMTNSJZWdm8h5KMQmgVvA-1FzMojotSxF0mGbE699jX7JFFwSS89CTS_kWb-jL3j8ImD4Ef2rmlA1ZV7wRZcCSgVgHjJFlA3upRaLV-zNzHeAvDM6wX73voHKlvqySbqih9-sEU79c53VHzFYbRhFxP2vU8UP__59btod0O6oejjYdGmMNk0BToscOiKq23yFvt8PXWe4lv2ymEfaf_vuce-nZ2uTy7Ky6vzLyfHlyVKXqeyQamERik7pRu3lG6DANRUUFeoK8WlUmQVbeSmy9UOJGGlHUghEalxutpj7-d3x5i8iTZPam_sOAx5IyMAtFJKZHUwKxvGGAM5sw3-DsPOcDBPyZnn5LL9MNstxryQCzhYH_81yPppsMzKmfmY6P65jOGnWepKK7NeteZarFou1itznf3H2aON5nacwpBj-c_3j63MiVA</recordid><startdate>20000401</startdate><enddate>20000401</enddate><creator>Nanda, J</creator><creator>Sapra, Sameer</creator><creator>Sarma, D. 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D ; Chandrasekharan, Nirmala ; Hodes, Gary</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a418t-9a4527a44d579f64fba00e93083a7351455ec5eb4bdf64d04ea37f0424aae9f73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2000</creationdate><topic>CHEMICAL PREPARATION</topic><topic>Chemistry</topic><topic>Colloidal state and disperse state</topic><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>CRYSTAL STRUCTURE</topic><topic>Disperse systems</topic><topic>Elements and non-metal compounds (oxides, hydroxides, hydrides, sulfides, carbides, ...)</topic><topic>Exact sciences and technology</topic><topic>General and physical chemistry</topic><topic>Growth from solutions</topic><topic>Inorganic chemistry and origins of life</topic><topic>MATERIALS SCIENCE</topic><topic>Methods of crystal growth; physics of crystal growth</topic><topic>Nanoscale materials and structures: fabrication and characterization</topic><topic>OPTICAL PROPERTIES</topic><topic>PARTICLE SIZE</topic><topic>Physics</topic><topic>Powders</topic><topic>Preparations and properties</topic><topic>SEMICONDUCTOR MATERIALS</topic><topic>ZINC SULFIDES</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nanda, J</creatorcontrib><creatorcontrib>Sapra, Sameer</creatorcontrib><creatorcontrib>Sarma, D. 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Mater</addtitle><date>2000-04-01</date><risdate>2000</risdate><volume>12</volume><issue>4</issue><spage>1018</spage><epage>1024</epage><pages>1018-1024</pages><issn>0897-4756</issn><eissn>1520-5002</eissn><abstract>We report the synthesis of three sizes of thioglycerol-capped precipitated ZnS nanocrystallites with relatively narrow size distributions, having average sizes of 1.8, 2.5, and 3.5 nm, respectively. These crystallites were extracted as free-standing powders which remain stable under normal atmospheric conditions and can be redispersed in suitable solvents. The nanocrystallite powders were characterized using X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), electron diffraction (ED), energy dispersive analysis of X-rays (EDAX), and UV−vis optical absorption. The synthesized nanocrystallites show typical lattice spacings corresponding to the cubic phase of ZnS, as confirmed from HRTEM, ED, and XRD. The lattice-resolved structures within a single nanocrystallite show characteristic defects such as twinning and dislocations. We present a comparative analysis of the size of nanocrystallites obtained from X-ray diffraction and TEM. The position of the excitonic transitions as seen in the optical absorption spectrum of the nanocrystallites was compared with the predictions of various models that correlate the size versus band gap of these nanocrystallites.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><doi>10.1021/cm990583f</doi><tpages>7</tpages></addata></record> |
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| subjects | CHEMICAL PREPARATION Chemistry Colloidal state and disperse state Cross-disciplinary physics: materials science rheology CRYSTAL STRUCTURE Disperse systems Elements and non-metal compounds (oxides, hydroxides, hydrides, sulfides, carbides, ...) Exact sciences and technology General and physical chemistry Growth from solutions Inorganic chemistry and origins of life MATERIALS SCIENCE Methods of crystal growth physics of crystal growth Nanoscale materials and structures: fabrication and characterization OPTICAL PROPERTIES PARTICLE SIZE Physics Powders Preparations and properties SEMICONDUCTOR MATERIALS ZINC SULFIDES |
| title | Size-Selected Zinc Sulfide Nanocrystallites: Synthesis, Structure, and Optical Studies |
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