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	<id>https://wikincat.org/w/index.php?action=history&amp;feed=atom&amp;title=B000227</id>
	<title>B000227 - Histórico de revisão</title>
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	<updated>2026-05-22T06:03:07Z</updated>
	<subtitle>Histórico de revisões para esta página neste wiki</subtitle>
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	<entry>
		<id>https://wikincat.org/w/index.php?title=B000227&amp;diff=5252&amp;oldid=prev</id>
		<title>Beatriz.borges em 20h51min de 7 de novembro de 2024</title>
		<link rel="alternate" type="text/html" href="https://wikincat.org/w/index.php?title=B000227&amp;diff=5252&amp;oldid=prev"/>
		<updated>2024-11-07T20:51:22Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Edição anterior&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Edição das 17h51min de 7 de novembro de 2024&lt;/td&gt;
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  &lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Linha 50:&lt;/td&gt;
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  &lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;|data=$a Síntese e caracterização de pontos quânticos de carbono derivados de óleos essenciais $h [recurso eletrônico] / $c Josiane da Silva Pinto ; orientadora, Lara Fernandes dos Santos Lavelli ; coorientador, Aldo Sena de Oliveira&lt;/div&gt;&lt;/td&gt;
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  &lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;|data=$a Síntese e caracterização de pontos quânticos de carbono derivados de óleos essenciais $h [recurso eletrônico] / $c Josiane da Silva Pinto ; orientadora, Lara Fernandes dos Santos Lavelli ; coorientador, Aldo Sena de Oliveira&lt;/div&gt;&lt;/td&gt;
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  &lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;}}&lt;/div&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Beatriz.borges</name></author>
	</entry>
	<entry>
		<id>https://wikincat.org/w/index.php?title=B000227&amp;diff=5251&amp;oldid=prev</id>
		<title>Beatriz.borges: Criou página com &#039;{{BibRecord |dateEnteredOnFile=241107 |itemType=04 |recordStatus=n |typeOfRecord=t |bibliographicLevel=m |encodingLevel=  |descriptiveCatalogingForm=a |multipartResourceRecordLevel=  |typeOfDate=s |date1=2024 |placeOfPublication=scb |illustrations=a |targetAudience=g |formOfItem=  |natureOfContents=m |governmentPublication=  |conferencePublication=  |festschrift=  |index=  |literaryForm=  |biography=  |language=por |modifiedRecord=  |catalogingSource=d }} {{Fie...&#039;</title>
		<link rel="alternate" type="text/html" href="https://wikincat.org/w/index.php?title=B000227&amp;diff=5251&amp;oldid=prev"/>
		<updated>2024-11-07T20:50:53Z</updated>

		<summary type="html">&lt;p&gt;Criou página com &amp;#039;{{BibRecord |dateEnteredOnFile=241107 |itemType=04 |recordStatus=n |typeOfRecord=t |bibliographicLevel=m |encodingLevel=  |descriptiveCatalogingForm=a |multipartResourceRecordLevel=  |typeOfDate=s |date1=2024 |placeOfPublication=scb |illustrations=a |targetAudience=g |formOfItem=  |natureOfContents=m |governmentPublication=  |conferencePublication=  |festschrift=  |index=  |literaryForm=  |biography=  |language=por |modifiedRecord=  |catalogingSource=d }} {{Fie...&amp;#039;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;Página nova&lt;/b&gt;&lt;/p&gt;&lt;div&gt;{{BibRecord&lt;br /&gt;
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|data=$a Dissertação (mestrado) – Universidade Federal de Santa Catarina, Programa de Pós-Graduação em Nanociência, Nanotecnologia e Materiais e Processos Avançados, Blumenau, 2024.&lt;br /&gt;
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|data=$a Inclui referências.&lt;br /&gt;
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|data=$a Os pontos quânticos de carbono (C­dots) têm atraído interesse crescente na comunidade científica devido às suas notáveis propriedades físico­químicas, métodos de síntese relativamente simples, baixo custo de produção e versatilidade funcional. Esses nanomateriais exibem características ópticas superiores a demais nanopartículas, como elevada fotoestabilidade e emissões que variam conforme o tamanho das partículas e o comprimento de onda de excitação. Dadas estas características, os C­dots são investigados em uma diversidade de campos, incluindo terapia tumoral, bioimagem, atividade antibacteriana, fotocatálise e desenvolvimento de materiais com capacidades autorregenerativas. Entre os diversos precursores utilizáveis para a síntese de C­dots, os óleos essenciais (OEs), que são extraídos de partes de plantas como folhas, raízes, caules, frutas, flores e resinas, são destacados por suas propriedades antioxidantes, antimicrobianas e antibacterianas excepcionais. Neste estudo, detalha-se a síntese de C­dots fotoluminescentes a partir de óleo de cravo (Syzygium aromaticum), canela (Cinnamomum zeylanicum) e alecrim (Salvia rosmarinus) empregando métodos hidrotérmicos e assistidos por micro­ondas, sem o uso de reagentes adicionais. As micrografias obtidas por microscopia eletrônica de transmissão revelaram a formação de C­dots com dimensões na faixa de 2 a 20 nm, variando conforme a metodologia de síntese empregada e o tipo de OE utilizado como precursor. Análises realizadas por Espectroscopia de Infravermelho por Transformada de Fourier indicaram que os C­dots sintetizados mantiveram os grupos funcionais originais presentes nos óleos essenciais, sugerindo a preservação das propriedades antioxidantes e antibacterianas, o que requer validação futura. As propriedades ópticas dos C­dots e dos OEs precursores foram investigadas por meio de espectroscopias de absorbância na região do ultravioleta visível (UV­vis)e de fotoluminescência, incluindo matrizes de excitação­emissão. Estes estudos mostraram que os C­dots exibem características ópticas aprimoradas em comparação com os óleos essenciais de origem, destacando­se por emissões mais intensas e por um espectro mais amplo de excitação. Portanto, este trabalho demonstra a viabilidade da síntese de C­dots a partir de OEs de cravo­da­índia, canela e alecrim, utilizando duas diferentes abordagens, e resulta na obtenção de nanopartículas com excelente capacidade de emissão fotoluminescente e grupos funcionais que são promissores para aplicações biomédicas.&lt;br /&gt;
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|data=$a Abstract: Carbon quantum dots (C­dots) have garnered increasing interest within the scientific community due to their remarkable physicochemical properties, relatively simple synthesis methods, cost­effectiveness, and functional versatility. These nanomaterials exhibit superior optical characteristics such as high photostability and emissions that vary with particle size and excitation wavelength. Given these features, C­dots are explored across a range of fields, including tumor therapy, bioimaging, antibacterial activity, photocatalysis, and the development of self­healing materials. Among the various precursors available for the synthesis of C­dots, essential oils (EOs), which are extracted from parts of plants such as leaves, roots, stems, fruits, flowers, and resins, are noted for their exceptional antioxidant, antimicrobial, and antibacterial properties. This study details the synthesis of photoluminescent C­dots from clove (Syzygium aromaticum), cinnamon (Cinnamomum zeylanicum), and rosemary (Salvia rosmarinus) oils using hydrothermal and microwave­assisted methods, without the need for additional reagents. Transmission Electron Microscopy images revealed the formation of C­dots ranging from 2 to 20 nm in size, varying according to the synthesis method employed and the type of EO used as a precursor. Analyses conducted via Fourier Transform Infrared Spectroscopy indicated that the synthesized C­dots retained the original functional groups present in the essential oils, suggesting the preservation of antioxidant and antibacterial properties that require further validation. The optical properties of the C­dots and the precursor EOs were investigated through UV­Vis absorbance and photoluminescence spectroscopies, including excitation­emission matrices. These studies demonstrated that the C­dots exhibit enhanced optical characteristics compared to their essential oil origins, highlighted by more intense emissions and a broader excitation spectrum. Therefore, this work demonstrates the feasibility of synthesizing C­dots from clove, cinnamon, and rosemary EOs using two different approaches, resulting in nanoparticles with excellent photoluminescent emission capabilities and functional groups that hold promise for biomedical applications.&lt;br /&gt;
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|data=$z Versão integral em pdf $u https://bu.ufsc.br/teses/PNAN0023-D.pdf&lt;br /&gt;
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{{EndOfRecord}}&lt;/div&gt;</summary>
		<author><name>Beatriz.borges</name></author>
	</entry>
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