12839463

Source:http://linkedlifedata.com/resource/pubmed/id/12839463

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Predicate	Object
rdf:type	pubmed:Citation
lifeskim:mentions	umls-concept:C0021420, umls-concept:C0060520, umls-concept:C0205171, umls-concept:C0220781, umls-concept:C0256694, umls-concept:C0439148, umls-concept:C0441889, umls-concept:C0700301, umls-concept:C1261322, umls-concept:C1521991, umls-concept:C1883073, umls-concept:C1883254
pubmed:issue	14
pubmed:dateCreated	2003-7-3
pubmed:abstractText	A new dyad 1 with two spiropyran units as the photochromic acceptors and one fluorescein unit as the fluorescent donor was synthesized and characterized. External inputs (ultraviolet light, visible light, and proton) induce the reversible changes of the structure and, concomitantly, the absorption spectrum of dyad 1 due to the presence of two spiropyran units. Only the absorption spectrum of the ME form of the spiropyran units in dyad 1 has large spectral overlap with the fluorescence spectrum of the fluorescein unit. Thus, the fluorescence intensity of dyad 1 is modulated by reversible conversion among the three states of the photochromic spiropyran units and the fluorescence resonance energy transfer (FRET) between the ME form and the fluorescein unit. Based on the fact that dyad 1 could "read out" three external input signals (ultraviolet light, visible ligh,t and proton) and "write" a compatible specific output signal (fluorescence intensity), dyad 1 described here can be considered to perform an integrated circuit function with one OR and one AND interconnected logic gates. The present results demonstrate an efficient strategy for elaborating and transmitting information at the single molecular level.
pubmed:language	eng
pubmed:journal	http://linkedlifedata.com/resource/pubmed/journal/2985193R
pubmed:status	PubMed-not-MEDLINE
pubmed:month	Jul
pubmed:issn	0022-3263
pubmed:author	pubmed-author:GuoXuefengX, pubmed-author:ZhangDeqingD, pubmed-author:ZhouYuchengY, pubmed-author:ZhuDaobenD
pubmed:issnType	Print
pubmed:day	11
pubmed:volume	68
pubmed:owner	NLM
pubmed:authorsComplete	Y
pubmed:pagination	5681-7
pubmed:year	2003
pubmed:articleTitle	Synthesis and spectral investigations of a new dyad with spiropyran and fluorescein units: toward information processing at the single molecular level.
pubmed:affiliation	Organic Solids Laboratory, Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China.
pubmed:publicationType	Journal Article